Safety module electrical distribution system

Information

  • Patent Grant
  • 7762838
  • Patent Number
    7,762,838
  • Date Filed
    Monday, April 21, 2008
    16 years ago
  • Date Issued
    Tuesday, July 27, 2010
    13 years ago
Abstract
A wiring module that can be installed in an electrical junction box and can receive a removable electrical outlet module, a removable electrical switch module, or other types of electrical functional modules. The wiring module and the removable electrical outlet and switch modules may include connectors having a mechanical portion and an electrical portion. The electrical connector portions may be configured so as not to be exposed to user contact when the mechanical connector portions are at least partially engaged.
Description
BACKGROUND OF THE INVENTION

1. Field of the Invention


Standard AC electrical systems are comprised of an electrical box and an electrical device, such as an outlet or switch, installed within the box. During a roughing phase of construction, electrical boxes are mounted to wall studs at predetermined locations. After the boxes are installed, a journeyman electrician routes power cables through building framing to the appropriate boxes. The power cable is fed through openings in the rear or sides of the electrical boxes and folded back into the boxes, unterminated, so as to be out of the way until the next phase. During a makeup phase, wall panels are installed and painted, and the journeyman returns to the construction site to install the electrical devices into the boxes. After conductors are wired to an electrical device, it and the attached conductors are pushed into the electrical box and the device is attached to the top and bottom of the box with screws. During a trim phase, face plates are mounted over the open-end of the electrical boxes, completing the standard electrical wiring process.


2. Description of the Related Art


Standard AC electrical systems are problematic in construction and use, with respect to costs, safety and functionality. From an electrical contractor perspective, a journeyman electrician must make two separate trips to the job site, one for the rough phase and one for the makeup phase. Also, during the makeup phase, installation of the wall panels can damage the work completed during the rough phase. This occurs, for example, when a router contacts exposed cables as drywallers create a hole to accommodate electrical box openings. Another form of damage occurs when drywall compound or paint fouls the exposed cables, insulation and labeling.


From a general contractor's perspective, verification of the electrical contractor's work is not possible until after the makeup phase. Until then, the electrical cables are unterminated. After the makeup phase, however, miswiring typically requires cutouts in the installed wall panels and associated patches after corrections are completed. Further, the electrical system cannot be activated until after verification. Thus, during the rough and makeup phases, electricity for tools and lighting must be supplied by generators, which create hazards due to fumes, fuel, and noise and are an unreliable electrical source. In addition, until the trim phase is completed, unskilled personnel have access to the electrical cable. Tampering can compromise the integrity of the electrical wiring and also create a safety problem after power is activated.


From a homeowner's perspective, there are problems with repair of the standard electrical wiring. Replacement of a broken outlet or switch device first requires removal of a face plate. The screws that attach the module to the top and bottom of the electrical box must be removed next. The device is then removed from the box and the conductors are removed by loosing the screws on the outlet sides. The process is then reversed to attach the conductors to a new device and mount the new device into the electrical box.


The prior art electrical device replacement procedure described above exposes the homeowner to AC wiring upon removal of the face plate. This exposure creates a shock hazard. Further, a homeowner's reluctance to change out broken devices or to spend the money to hire an electrician also creates a shock and a fire hazard from continued use of cracked, broken or excessively worn outlets or switches. In addition, the integrity of the original wiring becomes questionable if a homeowner or other third party removes and replaces an electrical device. Miswiring by a third party can violate building codes and create shock and fire hazards, such as inadvertently switching the hot and neutral conductors, failing to attach ground wires, kinking or nicking conductors or improperly tightening connections.


A safety module electrical distribution system benefits the electrical contractor in several respects. A wiring module is installed internally to an electrical box and associated functional modules are removably installed into the wiring module without exposure to or access to electrical system wiring attached behind the panel. The journeyman's work can be completed at the rough phase, when installation of the wiring module is complete. Thus, there is no need for the journeyman to return to the job site during the makeup phase because any semi-skilled laborer can insert, for example, an appropriate outlet or switch module. Further, there is no wiring access after the rough phase, protecting wiring integrity. Also, there are no exposed conductors or parts inside the electrical box that can be inadvertently damaged during wall panel installation.


The safety module electrical distribution system also benefits the general contractor. Because wiring is completed during rough framing, verification and activation of the building electrical system can be performed at the rough phase. Miswiring can be corrected before wall panels are installed and painted, eliminating cut and patch repairs. Early electrical system activation eliminates the need to use generators. Lack of third party access to the journeyman's wiring preserves integrity after verification and eliminates shock exposure to other workers.


The safety module electrical distribution system also benefits the homeowner. Replacement of broken sockets and switches can be easily and safely accomplished. Safety is enhanced by reducing exposure to electrical wiring and encouraging replacement of defective outlets and switches. Further, maintenance costs are reduced by reducing the need to hire an electrician for repairs. Wiring integrity is insured by reducing the opportunity of unqualified third parties to access the electrical system.


SUMMARY OF THE INVENTION

Various embodiments of a safety module electrical distribution system are described herein. In some embodiments, an electrical distribution apparatus comprises: a housing having a front cover with a front face that defines an electrical distribution function, and a back cover with a back face having a plurality of shielded plugs; an electrical contact set at least partially enclosed by the housing, wherein said electrical contact set is adapted to communicate electrical power via said shielded plugs for said electrical distribution function, and wherein each of the shielded plugs comprises a prong and a wall protruding from the back face, the wall disposed around the prong and protruding further than the prong.


In some embodiments, an electrical distribution apparatus comprises: a non-electrically conductive body comprising a front side and a back side; a first set of one or more connectors proximate the front side configured to couple with a removable electrical outlet module or a removable electrical switch module, the first set of one or more connectors each comprising a mechanical connector portion and an electrical connector portion, the electrical connector portion configured so as not to be exposed to user contact when the mechanical connector portion is at least partially engaged with a complementary mechanical connector portion of the removable electrical outlet module or the removable electrical switch module; a second set of one or more connectors proximate the back side configured to electrically couple with one or more electrical power cables; and one or more electrical conductors within the body configured to electrically couple the first set of one or more connectors with the second set of one or more connectors.


In some embodiments, an electrical distribution apparatus comprises: a non-electrically conductive body comprising a user-accessible front side and a back side; a first set of one or more connectors proximate the back side configured to couple with a wiring module connected to a source of electrical power, the first set of one or more connectors each comprising a mechanical connector portion and an electrical connector portion, the electrical connector portion configured so as not to be exposed to user contact when the mechanical connector portion is at least partially engaged with a complementary mechanical connector portion of the wiring module.





BRIEF DESCRIPTION OF THE DRAWINGS


FIGS. 1A-B are perspective views of an outlet module installed and removed, respectively, from a corresponding wiring module;



FIGS. 2A-B are perspective views of a switch module installed and removed, respectively, from a corresponding wiring module;



FIGS. 3-8 are perspective views of an outlet module and outlet module components;



FIGS. 3A-B are front and back perspective views, respectively, of an outlet module;



FIGS. 4A-B are exploded, front perspective views of outlet modules;



FIGS. 5A-B are front and back perspective views, respectively, of an outlet module front cover;



FIGS. 6A-B are front and back perspective views, respectively, of an outlet module back cover;



FIGS. 7A-B are front and back perspective views, respectively, of an outlet module power contact set;



FIGS. 8A-B are front and back perspective views, respectively, of an outlet module ground contact set;



FIGS. 9-15 are perspective views of a switch module and switch module components;



FIGS. 9A-B are front and back perspective views, respectively, of a switch module;



FIG. 10 is an exploded, front perspective view of a switch module;



FIGS. 11A-B are front and back perspective views, respectively, of a switch module switch;



FIGS. 12A-B are front and back perspective views, respectively, of a switch module front cover;



FIGS. 13A-B are front and back perspective views, respectively, of a switch module single-pole, single throw (SPST) contact set;



FIGS. 13C-D are front and back perspective views, respectively, of a switch module single-pole, double throw (SPDT) contact set;



FIGS. 13E-F are front and back perspective views, respectively, of a switch module double-pole, double throw (DPDT) contact set;



FIGS. 14A-B are front and back perspective views, respectively, of a switch module actuator;



FIGS. 15A-B are front and back perspective views, respectively, of a switch module back cover;



FIGS. 16-22 are perspective views of a wiring module and wiring module components;



FIGS. 16A-B are front and back perspective views, respectively, of a terminal-block wiring module;



FIGS. 16C-D are back perspective views of a terminal-block wiring module and associated terminal guards in open positions;



FIGS. 16E-F are front and back views, respectively, of a terminal-block wiring module and position-dependent wiring labels;



FIGS. 16G-H are switch and outlet wiring schematics, respectively;



FIG. 17A-B are exploded, front perspective views of a terminal-block wiring module with stationary-mount and swivel-mount terminal guards, respectively;



FIGS. 18A-B are front and back perspective views and a back view, respectively, of a wiring panel;



FIGS. 19A-B are front and back perspective views, respectively, of a mounting bracket;



FIGS. 20A-B are front and back perspective views, respectively, of a wiring panel front cover;



FIG. 21 is a perspective view of a wiring panel terminal set;



FIGS. 22A-B are front and back perspective views, respectively, of a wiring panel back cover;



FIGS. 23A-B are front and back perspective views, respectively, of a dimmer switch module;



FIG. 24 is an exploded, front perspective view of a dimmer switch module;



FIGS. 25A-B are front and back perspective views, respectively, of a fixed-wire wiring module;



FIGS. 26A-B are exploded, front and back perspective views, respectively, of a fixed-wire wiring module;



FIGS. 27A-B are front and back perspective views, respectively, of an electrical box cover;



FIGS. 28A-B are front perspective views of a covered and uncovered electrical box, respectively;



FIG. 29 is a front perspective view of a 2-gang electrical box with overlapping covers;



FIGS. 30A-B are back perspective and back perspective exploded views, respectively, of a wiring module having a terminal shield; and



FIGS. 31A-B are front and back perspective views, respectively, of a terminal shield.





DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
System Overview


FIGS. 1-2 illustrate a safety module electrical distribution system 100 having a functional module 110 and a wiring module 1600. The electrical distribution system 100 is configured to mount within a standard electrical box (not shown), such as is typically installed within a building wall. In particular, the wiring module 1600 is configured to be easily installed within an electrical box, and a functional module 110 is configured to be removably plugged into the wiring module 1600, as described below. FIGS. 1A B show an outlet module 300 in an installed and a removed position, respectively. FIGS. 2A-B show a switch module 900 in an installed and a removed position, respectively. A face plate (not shown) may be installed over a functional module 110 so as to provide an aesthetic trim.


As shown in FIGS. 1-2, each functional module 110 provides a user-accessible electrical distribution function. As shown in FIGS. 1A-B, the functional module 110 may be an outlet module 300, which functions to supply a user with electrical power through a conventional AC plug inserted into one of the module sockets. The outlet module 300 is configured for installation in a ground-up position in a wiring module 1600 oriented for outlet installation. Alternatively, an outlet module and wiring module can be configured for outlet installation in a ground-down position.


As shown in FIGS. 2A-B, the functional module 110 may be a switch module 900, which allows a user to control electrical power to an outlet, a light or any of various electrical devices (not shown) by actuating the module switch. The switch is slidable between first and second positions in contrast to a conventional toggle switch, such as used for turning an interior light on and off. The switch module 900 is configured for installation in a wiring module 1600 oriented for switch installation. Reversible wiring module 1600 orientation within an electrical box to indicate the module to be installed and its proper orientation is described in detail with respect to FIGS. 16A-H, below


Other outlet and switch related functional modules 110 may include GFCI outlets, covered safety outlets and dimmer switches (FIGS. 23-24) to name just a few. Further, the electrical distribution system 100 may be wall-mounted, ceiling-mounted or floor-mounted. In additional, the electrical distribution system 100 can be adapted for uses other than building electrical distribution, such as airplane, automobile or boat electrical distribution applications, to name a few. A modular electrical outlet and switch system is described in U.S. Pat. No. 6,341,981 entitled Safety Electrical Outlet and Switch System, and a covered safety outlet module is described in U.S. patent application Ser. No. 10/737,713 entitled Safety Outlet Module, both assigned to ProtectConnect, Irvine, Calif. and incorporated by reference herein.


Outlet Module


FIGS. 3A-B illustrate an outlet module 300 having a body 310, a front side 301 and a back side 302. The body 310 accepts attachment screws 305 on diagonally opposite corners that are utilized to secure the outlet module 300 to a wiring module 1600 (FIGS. 1A-B). The outlet module front side 301 provides upper and lower sockets 320 each configured to accept a conventional, three-wire (grounded) electrical plug. The outlet module back side 302 provides shielded plugs 330 and a ground bar 834 that physically and electrically connect the outlet module 300 to a wiring module 1600 (FIGS. 1A-B). The shielded plugs 330 transfer electrical power to the sockets 320, and the ground bar 834 provides a ground path for the sockets 320. The ground bar 834 also functions as a key to assist in orienting the outlet module 300 relative to the wiring module 1600 (FIGS. 1A-B).



FIG. 4A illustrates an outlet module 300 having a front cover 500, a rear cover 600, a power contact set 700 and a ground contact set 800. The front cover 500 and back cover 600 form the outlet module body 310 (FIGS. 3A-B). The covers 500, 600 advantageously snap together with a latch and catch assembly, described with respect to FIGS. 5-6, below. This reduces manufacturing assembly steps and reduces or eliminates the need for separate fasteners, such as rivets or screws and/or sonic welding. The contact set 700, 800 is retained within the covers 500, 600 and provides conductive paths from the wiring panel 1600 (FIGS. 16A-B) to the outlet sockets 320 (FIG. 3A). In particular, a power contact set 700 transfers power from the shielded plugs 330 (FIG. 3B) to the outlet sockets 320 (FIG. 3A). A ground contact set 800 provides a ground path between a ground bar 834 (FIG. 3B) and the outlet sockets 320 (FIG. 3A). The ground contact set components 810, 830, 850 are assembled as described with respect to FIGS. 8A-B, below. In one embodiment, the covers 500, 600 are constructed of nylon. FIG. 4B illustrates an alternative embodiment of an outlet module 400, such as for 20A applications



FIGS. 5A-B illustrate the outlet module front cover 500 having an outside face 501, an inside face 502, outlet apertures 510, attachment ears 520, side latches 530 and contact housing structure 540, 550. As shown in FIG. 5A on the outside face 501, the outlet apertures 510 form the entry to the outlet module sockets 320 (FIG. 3A) and include a hot slot, neutral slot and ground hole for each of a top socket and bottom socket. The attachment ears 520 are advantageously integral to the front cover 500, eliminating the need for a separate mechanism for attaching the outlet module 300 (FIGS. 3A-B) to the wiring module 1600 (FIGS. 16A-B). The attachment ears 520 are located at an upper right corner and a diagonally opposite lower left corner (not visible), and each has a fastening aperture that accepts, for example, an attachment screw 305 (FIGS. 3A-B). The side latches 530 form the front cover portion of the latch and catch assembly, functionally described with respect to FIG. 4, above.


As shown in FIG. 5B on the inside face 502, a power contact structure 540 accepts the power contact set 700 (FIGS. 7A-B) so that the power contact clips 701 (FIGS. 7A-B) align with the hot and neutral slots of the outlet apertures 510. A ground contact structure 550 accepts the ground contact set 800 (FIGS. 8A-B) so that the ground contact clips 832, 852 (FIGS. 8A-B) align with the ground holes of the outlet apertures 510.



FIGS. 6A-B illustrate the outlet module back cover 600 having an outside face 601, an inside face 602, plug shields 610, a ground bar aperture 620, side catches 630 and contact support structure 640, 650. As shown in FIG. 6B on the outside face 601, the plug shields 610 advantageously provide the shield portion of the shielded plugs 330 (FIG. 3B). Specifically, the plug shields 610 completely surround all sides of the power contact set prongs 702 (FIGS. 7A-B). In this manner, the prongs 702 (FIGS. 7A-B) are not exposed when the outlet module plugs 330 (FIG. 3B) are engaged with the wiring module sockets 810 (FIG. 18A), even when the outlet module 300 (FIGS. 3A-B) is partially separated from the wiring module 1600 (FIGS. 16A-B). The ground bar aperture 620 allows the ground bar 834 (FIGS. 8A-B) to protrude through the back cover 600, providing a ground contact with the wiring module 1600 (FIGS. 16A-B). The side catches 630 provide apertures that accept and engage the side latches 530 (FIGS. 5A-B) so as to releasably secure together the front cover 500 (FIGS. 5A-B) and the back cover 600.


As shown in FIG. 6A on the inside face 602, a power contact support structure 640 consists of slots that allow the prongs 702 (FIGS. 7A-B) to protrude through the back cover 600 within the plug shields 610, providing a power connection with the wiring module 1600 (FIGS. 16A-B). A ground contact support structure 650 supports the ground contact set 800 (FIGS. 8A-B).



FIGS. 7A-B illustrate the power contact set 700 having an upper hot contact 710, a lower hot contact 720, an upper neutral contact 730 and a lower neutral contact 740. Each contact 710740 has a prong clip 701 interconnected with a prong 702. The prong clips 701 align with the front cover hot and neutral slots 510 (FIG. 5A) to form the outlet module sockets 320 (FIG. 3A). The prongs 702 insert through the power contact support structure 640 into the plug shields 610 to form the outlet module shielded plugs 330 (FIG. 3B). Advantageously, the power contact set 700 is configured so that the contacts may be manufactured by a stamp and fold process. In one embodiment, the contacts are brass.



FIGS. 8A-B illustrate a ground contact set 800 having a ground buss 810, an upper ground contact 830 and a lower ground contact 850. The ground clips 832, 852 align with the front cover ground holes 510 (FIG. 5A) to form the ground portion of the outlet module sockets 320 (FIG. 3A). The ground bar 834 protrudes through the back cover 600 (FIGS. 6A-B) to provide a ground path connection with the wiring module 1600 (FIGS. 16A-B). The unassembled ground contact set 800 is illustrated in FIG. 4, above. Ground contact set 800 assembly is described below.


As shown in FIGS. 8A-B, the ground buss 810 has an upper rivet 812, a lower rivet 814, an upper cutout 815, a slot 816 and a lower cutout 818. The ground buss 810 mechanically supports and electrically interconnects the upper ground contact 830 and the lower ground contact 850. The upper ground contact 830 has an upper ground clip 832, a ground bar 834, leaves 836 and a tab 838. The upper ground clip 832 and ground bar 834 extend from opposite ends of the upper ground contact 830. The upper ground clip 832 accepts a ground pin from a standard AC electrical plug. The ground bar 834 inserts into a corresponding ground clip 1902 (FIGS. 19A-B) in the wiring module 1600 (FIGS. 16A-B). The tab 838 extends generally perpendicularly below and between the clip 832 and bar 834 and has an aperture corresponding to the top rivet 812. The leaves 836 extend from the back of the clip 832. The lower ground contact 850 has a lower ground clip 852, leaves 854 and a tab 858. The tab 858 extends generally perpendicularly to the clip 852 and has an aperture corresponding to the lower rivet 814. The leaves 854 extend from the back of the clip 852.


Also shown in FIGS. 8A-B, the ground contact set 800 is assembled by inserting the upper ground contact 830 and lower ground contact 850 into the ground buss 810. Specifically, the ground bar 834 is inserted into the slot 816, the leaves 836, 854 are inserted into the upper and lower cutouts 815, 818, respectively, and the upper and lower rivets 812, 814 are inserted through the tabs 838, 858. The rivets 812, 814 are then splayed, fixedly attaching the upper and lower ground contacts 830, 850 to the ground buss 810. Advantageously, the ground contact set 800 is configured so that the ground contact set components 810, 830, 850 may be manufactured by a stamp and fold process. In one embodiment, the upper and lower ground contacts 830, 850 are brass and the ground buss 810 is zinc-plated steel.


Switch Module


FIGS. 9A-B illustrate a switch module 900 having a body 910, a front side 901 and a back side 902. Like the outlet module body 310 (FIGS. 3A-B), the switch module body 910 accepts screws on diagonally opposite corners that are utilized to secure the switch module 900 to a wiring module 1600 (FIGS. 2A-B). The switch module front side 901 has a slidable switch 1100 configured to actuate internal contacts so as to route electrical power, to turn on and off a light, for example. Like the outlet module 300 (FIGS. 3A-B), the switch module back side 902 provides shielded plugs 930 that physically and electrically connect the switch module 900 to a wiring module 1600 (FIGS. 2A-B). The shielded plugs 930 conduct electrical power under control of the switch 1100. There may be null plugs 940 having no conductors depending on the switch module 900 configuration and associated function, as described with respect to FIGS. 13A-F, below. The switch module 900 does not require a ground path to the wiring module 1600 (FIGS. 2A-B). A key bar 1520, therefore, provides a non-conducting structure that substitutes for a ground bar 834 (FIG. 3B), to assist in orienting the switch module 900 relative to the wiring module 1600 (FIGS. 2A-B).



FIG. 10 illustrates a switch module 900 having a switch 1100, a front cover 1200, a rear cover 1500, a contact set 1300, an actuator 1400 and a spring 1000. The front cover 1200 and back cover 1500 form the switch module body 910 (FIGS. 9A-B). The covers 1200, 1500 advantageously snap together and are secured with a latch and catch assembly, described with respect to FIGS. 12A-B and 15A-B, below. This reduces manufacturing assembly steps and reduces or eliminates the need for separate fasteners, such as rivets or screws and/or sonic welding. In one embodiment, the covers 1200, 1500 are constructed of nylon.


As shown in FIG. 10, the switch 1100 snaps into and is slidably retained by the front cover 1200 and engages the actuator 1400. The switch 1100 is movable between a first position and a second position. The contact set 1300, actuator 1400 and spring 1000 are retained within the covers 1200, 1500. The contact set 1300 routes electrical power from the wiring panel 1600 (FIGS. 1A-B) as determined by the switch 1100 positions. In particular, the position of the switch 1100 determines the position of the actuator 1400, which, in turn, determines whether the contact set 1300 is open or closed. If closed, the contact set 1300 provides a conductive path that transfers power between the shielded plugs 930 (FIG. 3B). The switch 1100 remains in its manually set position under tension from the spring 1000.



FIGS. 11A-B illustrate a switch 1100 that is generally rectangular, having a front side 1101 and a back side 1102. The front side 1101 has a finger grip 1110 for manually sliding the switch between its first position and its second position, as described above. The back side 1102 has latches 1120 and a lever 1130 that extends in a direction generally normal to the plane of the back side 1102. The latches 1120 are configured to pass through front cover slots 1214 (FIG. 12A), which cause the latches 1120 to flex inward toward the extension 1130 as the switch 1100 is pressed into the front cover 1200 (FIGS. 12A-B). The latches 1120 spring outward after the latches pass through the slots 1214 (FIG. 12A), seating the switch in the front cover 1200 (FIGS. 12A-B), as described below. The lever tip 1132 inserts through the actuator slot 1410 (FIGS. 14A-B) and contacts the spring 1000, mechanically connecting the switch 1100 to the actuator 1400 (FIGS. 14A-B).



FIGS. 12A-B illustrate a front cover 1200 having an outside face 1201, an inside face 1202, a switch cavity 1210, attachment ears 1220, side latches 1230 and top and bottom catches 1240. Located on the outside face 1201, the cavity 1210 is configured to accommodate the switch 1100 (FIGS. 11A-B). Within the cavity 1210 is a lever slot 1212 that allows the switch lever 1130 (FIG. 11B) to pass through the front cover to the actuator 1400 (FIGS. 14A-B). The lever slot 1212 extends along the cavity 1210 a sufficient distance to allow switch movement between first and second positions, as described above. Also within the cavity 1210 are catch slots 1214 that accommodate and capture the switch latches 1120 (FIG. 11B), as described above. The attachment ears 1220 are located at an upper right corner and a diagonally opposite lower left corner (not visible), and each has a fastening aperture that accepts, for example, an attachment screw 305 (FIGS. 3A-B). The side latches 1230 and top and bottom catches 1240 form the front cover portion of the latch and catch assembly, functionally described with respect to FIG. 10, above.



FIGS. 13A-B illustrate a SPST contact set 1300 having a throw buss 1310 and a pole buss 1320. The throw buss 1310 has a first prong 1312, a flexible throw 1314 and a throw contact 1318. The pole buss 1320 has a second prong 1322, a fixed pole 1324 and a pole contact 1328. The first and second prongs 1312, 1322 form the conductive portion of the shielded plugs 930 (FIG. 9B). The flexible throw 1314 engages the actuator 1400, as described with respect to FIGS. 14A-B, below, which moves the throw between an open position and a closed position (shown). In the closed position, the throw contact 1318 touches and electrically connects with the pole contact 1328, establishing a conductive path between the first and second prongs 1312, 1322. In the open position, the throw contact 1318 is separated from the pole contact 1328 so that there is no conductive path between the first and second prongs 1312, 1322.



FIGS. 13C-D illustrate a SPDT contact set 1301 for a 3-way switch having a second pole buss 1330 in addition to the SPST contact set 1300 (FIGS. 13A-B). The second pole buss 1330 has a third prong 1332 and a second pole contact 1338. The flexible throw 1314 engages the actuator 1400, as described with respect to FIGS. 14A-B, below, which moves the throw between a first position (shown) and a second position. In a first position, the throw contact 1318 touches and electrically connects with the pole contact 1328, establishing a conductive path between the first and second prongs 1312, 1322. In a second position, the throw contact 1318 touches and electrically connects with the second pole contact 1338, establishing a conductive path between the first and third prongs 1312, 1332.



FIGS. 13E-F illustrate a DPDT contact set 1302 for a 4-way switch having a second throw buss 1340 and a third pole buss 1350 in addition to the SPDT contact set 1301. The second throw buss 1340 has a second flexible throw 1344. The second throw buss 1340 has a fourth prong 1342, a second flexible throw 1344 and a second throw contact 1348. The second pole buss 1330 has the third pole contact 1339, and the third pole buss 1350 has a fourth pole contact 1359. In a first position, the throw contact 1318 touches and electrically connects with the pole contact 1328, establishing a conductive path between the first and second prongs 1312, 1322. Also, the second throw contact 1348 touches and electrically connects with the third pole contact 1339, establishing a conductive path between the third and fourth prongs 1332, 1342. In a second position, the throw contact 1318 touches and electrically connects with the second pole contact 1338, establishing a conductive path between the first and third prongs 1312, 1332. Also, the second throw contact 1348 touches and electrically connects with the fourth pole contact 1339, establishing a conductive path between the second and fourth prongs 1322, 1342.



FIGS. 14A-B illustrate an actuator 1400 having a front face 1401, a back face 1402 and a lever slot 1410 generally centered within and passing through the front and back faces 1401, 1402. The actuator 1400 is positioned within the switch module 900 (FIG. 10) so that the front face 1401 is proximate the front cover 1200 (FIG. 10) and the contact set 1300 (FIG. 10) and the back face 1402 is proximate the spring 1000 (FIG. 10) and the back cover 1500 (FIG. 10). The lever slot 1410 accommodates the switch lever tip 1132 (FIG. 11B), as described above. The front face 1401 has a pair of upper arms 1420 and a pair of lower arms 1430 extending generally perpendicularly from the front face 1401 so as to engage the contact set 1300 (FIGS. 13A-B). In particular, the flexible throw 1314 (FIGS. 13A-B) is engaged between the upper arms 1420. For a DPDT contact set 1302 (FIGS. 13E-F), a second flexible throw 1344 (FIGS. 13E-F) is engaged between the lower arms 1430. The back face 1402 has a pair of posts 1440 that are slidably retained within back cover guides 1550 (FIG. 15A).



FIGS. 15A-B illustrate a rear cover 1500 having an inside face 1502, an outside face 1501, plug shields 1510, a key bar 1520, side catches 1530, top and bottom latches 1540, actuator guides 1550, a spring hold 1560 and contact support structure 1570. As shown in FIG. 15B on the outside face 1501, the plug shields 1510 advantageously provide the shield portion of the shielded plugs 930 (FIG. 9B). Specifically, the plug shields 1510 completely surround all sides of the contact set prongs 1312, 1322 (FIGS. 13A-B). In this manner, the prongs are not exposed when the switch module plugs 930 (FIG. 9B) are engaged with the wiring module sockets 1810 (FIG. 18A), even when the switch module 900 (FIGS. 9A-B) is partially separated from the wiring module 1600 (FIGS. 16A-B). The key bar 1520 is configured to insert into the wiring module ground socket 1820 (FIG. 18A), although the key bar 1520 is nonconductive. The key bar 1520 assists proper orientation of the switch module 900 (FIGS. 9A-B) to the wiring module 1600 (FIGS. 16A-B). The side catches 1530 provide apertures that accept and engage the side latches 1230 (FIGS. 12A-B), and the top and bottom latches 1540 insert into and engage the top and bottom catches 1240 (FIGS. 12A-B) so as to releasably secure together the front cover 1200 (FIGS. 12A-B) and the back cover 1500.


As shown in FIG. 15A on the inside face 1502, the actuator guides 1550 slidably retain the actuator posts 1440 (FIG. 14B). The spring hold 1560 accommodates and retains the spring 1000 (FIG. 10). The contact support structure 1570 consists of slots through the back cover 1500 and structure extending generally normal to the inside face 1502 that support the contact set 1300 (FIGS. 13A-B). The slots accept the contact set prongs 1312, 1322 (FIGS. 13A-B), which protrude through the back cover 1500 within the plug shields 1510.


Terminal-Block Wiring Module


FIGS. 16A-B illustrate a terminal-block wiring module 1600 having a functional side 1601 and a wiring side 1602. The functional side 1601 has structured sockets 1810 and an off-center ground socket 1820. The structured sockets 1810 accept corresponding functional module shielded plugs, as described with respect to FIG. 20A, below. The wiring module 1600 is configured to mount within a conventional electrical box (not shown), secured with attachment screws 1605. A functional module, such as an outlet module 300 (FIGS. 3A-B) or a switch module 900 (FIGS. 9A-B) plug into the wiring module functional side 1601, secured to the wiring module with attachment screws that thread through attachment ears and corresponding module mounts 1930, as described with respect to FIGS. 1-2, above. A power cable (not shown) routed into the electrical box attaches to a terminal block 1640 (FIG. 16F) accessible from the wiring module wiring side 1602, as described with respect to FIGS. 16E-H, below.


As shown in FIGS. 16A-B, a wiring module 1600 advantageously can be installed, wired and tested by journeyman electrician at the rough-in phase of building construction. The wiring module 1600 is mounted within an electrical box according to the type of functional module for which the wiring module 1600 will be wired. If the wiring module 1600 is mounted in a first orientation (FIG. 1B), the ground socket 1820 is positioned below-center. If the wiring module is mounted in a second orientation (FIGS. 2B, 16A), the ground socket 1820 is positioned above-center. The ground socket 1820 accepts an outlet module ground bar 834 (FIG. 3B) or switch module key bar 1520 (FIG. 9B), which act as keys. Correspondingly, the ground socket 1820 acts as a block that accepts a functional module key 834 (FIG. 3B), 1520 (FIG. 9B) only when the functional module is properly oriented with respect to the wiring module 1600 according to module type, such as a switch or outlet. In one embodiment, the wiring module 1600 is mounted with the ground socket 1820 above-center for a switch module 900 (FIGS. 9A-B) and mounted with the ground socket 1820 below-center for an outlet module 300 (FIGS. 3A-B), as described in further detail with respect to FIGS. 16E-H, below.



FIGS. 16C-D illustrate a terminal-block wiring module 1600 having terminal guards 1700 that advantageously provide covered access to the terminal set 2100 (FIG. 21). In particular, in a closed position (FIGS. 16A-B) the terminal guards 1700 protect users from shock and insulate between closely mounted high voltage devices. In an open position (FIGS. 16C-D), the terminal guards 1700 allow convenient access to the terminal screws 2140 so as to attach or remove power cable wires from the terminal blocks 1640. As shown in FIG. 16C, a hinge 1702 allows a terminal guard 1700 to move from a closed position (FIGS. 16A-B) to an open position. A latch 1704 presses into a corresponding catch slot 2220, which retains a terminal guard 1700 in a closed position until it is manually opened. As shown in FIG. 16D, in one embodiment a swivel mount 1709 (FIG. 17B) also allows the terminal guard 1700 to swivel from side to side in an open position, further easing access to the terminal screws 2140.



FIGS. 16E-F illustrate orientation-dependent labels on the wiring module functional and wiring sides, respectively. As described above, the type of functional module to be mounted in the wiring module 1600 determines the mounted orientation of the wiring module 1600 within an electrical box. Color coded labels 1620, 1630 on the functional side (FIG. 16E) and wiring labels 1650, 1660 on the wiring side (FIG. 16F) advantageously indicate to the journeyman electrician the correct wiring module 1600 orientation. The color coded labels 1620, 1630 also advantageously indicate the correct functional module to be installed or replaced. In particular, as shown in FIG. 16E, the color coded labels include a switch label 1620 and an outlet label 1630. The switch label 1620 has an orientation indicator 1622 and corresponding text that specify the wiring module orientation for a switch module 900 (FIGS. 2A-B). In addition, color boxes 1624 advantageously match color indicators 2310 (FIG. 23A) on corresponding switch modules 900. Further, as shown in FIG. 16F, the outlet label 1630 has an orientation indicator 1632 and corresponding text that specify the wiring module orientation for an outlet module 300 (FIGS. 1A-B). Also, color boxes 1634 match an outlet color indicator. In one embodiment, the switch color boxes 1624 are yellow, red and orange matching SP, 3-way and 4-way switch color indicators, respectively. The outlet color boxes 1634 are dark and light blue for full hot and half-hot wiring, matching a blue color indicator for an outlet module. The color boxes 1624, 1634 are marked by the journeyman electrician at wiring module installation to visually indicate the module type for which the wiring module 1600 was wired.


As shown in FIG. 16F, there are four terminal blocks 1640, each having terminal labels “1,” “2,” “3” and “4” 1670 identifying the individual terminal blocks T1, T2, T3 and T4 by number. In a switch orientation (shown), switch labels 1650 are advantageously positioned in a manner visually corresponding to each of the individual terminal blocks 1640. The switch labels 1650 identify switch wiring for each terminal block by switch type SP, 3-way and 4-way. The outlet labels 1660 are upside down in the switch orientation, visually indicating that they are inapplicable. In an outlet orientation (upside down from that shown), outlet labels 1660 are similarly positioned in a manner visually corresponding to each of the individual terminal blocks 1640. The outlet labels 1660 identify outlet wiring. The switch labels 1650 are upside down in the outlet orientation, visually indicating that they are inapplicable.



FIGS. 16G-H illustrate switch and outlet wiring schematics, respectively, corresponding to the terminal labels 1670 (FIG. 16F), switch labels 1650 (FIG. 16F) and outlet labels 1660 (FIG. 16F) described with respect to FIG. 16F, above. Graphically depicted are groups of four terminals 1690 representing the terminal blocks 1640 (FIG. 16F). Also depicted are individual terminal blocks 1691, corresponding hot, neutral, traveler and switch wires 1692, and links and gaps 1693 corresponding to removable breakaways 2116.



FIGS. 17A-B illustrate a terminal-block wiring module 1600 having a wiring panel 1800 and a mounting bracket 1900. The wiring panel 1800 has a front cover 2000, a back cover 2200, a terminal set 2100 and terminal guards 1700. The front cover 2000 and back cover 2200 are secured together with a fastener (not shown). The mounting bracket 1900 further secures the front cover 2000 to the back cover, as described with respect to FIGS. 1820, below. The terminal set 2100 is retained within the wiring panel 1800 and provides terminal blocks 1640 (FIG. 16F) for power cable attachment and provides conductive paths between the terminal blocks 1640 (FIG. 16F) and structured sockets 1810 (FIG. 18A). The mounting bracket 1900 advantageously performs multiple functions including securing the wiring module 1600 to an electrical box (not shown), securing together the front and back covers 2000, 2200, providing a ground bar clip 1902 (FIG. 19A) for contact with a module ground bar 834 (FIG. 3B) and providing a ground terminal 1907 (FIG. 19A) for a ground wire connection.


As shown in FIGS. 17A-B, the terminal guards 1700 each have a hinge 1702, a latch 1704, a mount 1706, 1709 and a grip 1708. The mount 1706, 1709 slides into a corresponding guard slot 2210 (FIG. 22A) on each side of the back cover 2200, which secures each terminal guard 1700 to the wiring panel 1800. The hinge 1702 advantageously allows a terminal guard 1700 to move between a closed position (FIGS. 16A-B) blocking inadvertent contact with the terminal blocks 1640 (FIG. 16F) and an open position (FIGS. 16C-D) allowing access to the terminal blocks 1640 (FIG. 16F). The latch 1704 presses into a corresponding catch slot 2220 (FIG. 22A) on each side of the back cover 2200, which retains each terminal guard 1700 in a closed position until it is manually opened. A grip 1708 assists in latching the terminal guards 1700. A stationary mount 1706 (FIG. 17A) holds the terminal guards 1700 in alignment with the terminal screws 2140 (FIG. 21). Alternatively, a swivel mount 1709 (FIGS. 17B) advantageously allows the terminal guards 1700 to swivel to either side 1601, 1602 (FIGS. 16A-B) of the wiring module for easier access to the terminal screws 2140 (FIG. 21).



FIGS. 18A-B illustrate a wiring panel 1800 having a front side 1801 and a back side 1802. The front side 1801 has structured sockets 1810, a ground socket 1820 and bracket slots 1830. The back side 1802 has terminal blocks 1640 (FIG. 16F) formed by a terminal set 2100 (FIG. 21) having terminal screws 2140 (FIG. 21) that are accessed through the terminal guards 1700, as described above.



FIGS. 19A-B illustrate a mounting bracket 1900 having a bracket body 1901, a ground clip 1902 and a ground terminal 1907. The ground clip 1902 is attached to the bracket body 1901 with a rivet 1905. The ground terminal 1907 provides a ground termination for a ground wire (not shown). The bracket 1900 has swages 1910, box mounts 1920 and module mounts 1930. The bracket 1900 is configured to be disposed around the rear cover 2200 (FIGS. 22A-B) with the swages 1910 inserted through front cover slots 2020 (FIGS. 20A-B) and spread against the front cover outside 2001 so as to secure together the front and rear covers 2000, 2200. A fastener 1909 is inserted through the bracket and into the wiring panel front cover 2000, so as to secure together the front and rear covers 2000, 2200. The box mounts 1920 allow the wiring module 1600 (FIGS. 16A-B) to be secured to an electrical box (not shown) and are configured to removably engage a box cover (FIGS. 27-29). The module mounts 1930 allow functional modules 300 (FIGS. 3A-B), 900 (FIGS. 9A B) to be secured to the wiring module 1600 (FIGS. 16A-B). The ground clip 1902 is configured to physically and electrically connect to a module ground bar 834 (FIGS. 8A-B).


In an alternative embodiment, the mounting bracket 1900 does not have swages 1910. Multiple fasteners 1909 are inserted through the mounting bracket 1900 and into the wiring panel front cover 2000, so as to secure together the front and rear covers 2000, 2200. After the mounting bracket 1900 is attached to the front cover 2000, ears at the top and bottom of the mounting bracket 1900 are bent over and against the front cover outside 2001 to further secure together the front and rear covers 2000, 2200. Trusses are included across or proximate to folded portions of the mounting bracket 1900 to strengthen the bracket structure. The box mount 1920 may have an alternative shape so as to accommodate a box cover 2700 (FIGS. 27A-B).



FIGS. 20A-B illustrate a front cover 2000 having an outside face 2001 and an inside face 2002. As shown in FIG. 20A on the outside face 2001, raised guards 2010 and surrounding channels 2014 provide the nonconductive portions of structured sockets 1810 (FIG. 18A). Each raised guard 2010 and surrounding channel 2014 are configured to mate with a corresponding plug shield 610 (FIG. 6B). In particular, when a functional module is plugged into the wiring module 1600 (FIGS. 16A-B), shields 610 (FIG. 6B), 1510 (FIG. 15B) insert into channels 2014, guards 2010 insert within shields 610 (FIG. 6B), 1510 (FIG. 15B), and prongs 702 (FIGS. 7A-B) plug into power clips 2112 (FIG. 21). This interlocking action of the shield plugs 330 (FIG. 3B), 930 (FIG. 9B) and the structured sockets 1810 (FIG. 18A) advantageously provides a fully enclosed shield as an electrical connection is made between a functional module and a wiring module, in addition to tactile feedback and a solid mechanical and electrical connection. Further, the guards 2010 and channels 2014 reduce the chance of an inadvertent contact between a tool, such as a screwdriver tip, and a hot contact within a socket 1810 (FIG. 18A). For example, a tool dragged across the wiring panel front side 1801 (FIG. 18A) during service will tend to lodge in the channel 2014 or against the raised guard 2010 or both. In a particular embodiment, the shields 610 (FIG. 6B), 1510 (FIG. 15B) and the corresponding channels 2014 and raised guards 2010 are generally rectangular in shape with rounded corners.


As shown in FIG. 20B, the inside face 2002 has swage slots 2020, a ground aperture 2030 and terminal support structure 2050, 2060. The swage slots 2020 accommodate the mounting bracket swages 1910 (FIG. 19A), which assist to secure together the front and back covers 2000, 2200. The ground aperture 2030 accommodates a ground bar 834 (FIG. 3B) or key bar 1520 (FIG. 9B) as part of a ground socket 1820 (FIG. 18A). The support structure 2050, 2060 houses the terminal set 2100 (FIGS. 21).



FIG. 21 illustrates a terminal set 2100 having contact busses 2110, terminal clamps 2130 and terminal screws 2140. The contact busses 2110 each have power clips 2112 that provide the conductor portion of the structured sockets 1810 (FIG. 18A). The power clips 2112 are configured to physically and electrically connect with module prongs 702 (FIGS. 7A-B), 1312, 1322 (FIGS. 13A-B). The terminal clamps 2130 and terminal screws 2140 terminate power cables (not shown) to the contact busses 2110. The terminal clamps 2130 are configured to secure one wire per channel 2132. Advantageously, this provides a four-wire capacity for each of four terminal blocks 1640 (FIG. 16F). In one embodiment, each terminal block 1640 (FIG. 16F) is configured for four 14 gauge copper wires or two 12 gauge copper wires. Breakaways 2116 are removable to selectively isolate individual terminal blocks 1640 (FIG. 16F).



FIGS. 22A-B illustrate a back cover 2200 having an inside face 2202 and an outside face 2201. The inside face 2202 has mount slots 2210 and catch slots 2220 that retain the terminal guards 1700 (FIG. 17), as described above. The inside face 2202 also has terminal slots 2230 that retain the terminal set. The outside face 2201 is shaped to accommodate the mounting bracket 1900 (FIGS. 19A-B) and accommodate power cable attachment to the terminal blocks 1640 (FIG. 16F).


Dimmer Switch Module


FIGS. 23A-B illustrate a dimmer switch module 2300 having a switch 2410 and a dimmer lever 2460 on a front side 2301 and shielded plugs 2330 and a key bar 2350 on a back side 2302. The top of the switch module 2300 also has a color label 2310. The color label 2310 corresponds in color to one of the wiring module color labels 1624. In this manner, the switch module color label 2310 advantageously provides a visual indication of proper module orientation and avoids installation into a wiring module 1600 (FIG. 16E F) wired for a different module type. Similar color labels of differing colors may be applied in a similar fashion to outlet modules 300 (FIGS. 3A-B) and other switch modules 900 (FIGS. 9A-B) for the same purpose. FIG. 24 illustrates the dimmer switch module 2300 including a switch 2410, a front cover 2420, a bracket 2430, a circuit board 2440, a back cover 2450 and a dimmer lever 2460.


Fixed-Wire Wiring Module


FIGS. 25A-B illustrate a fixed-wire wiring module 2500 having a functional side 2501 and a wiring side 2502. The wiring module 2500 is configured to mount within a conventional electrical box (not shown), secured with attachment screws (not shown) threaded through box mounts 2652. A functional module, such as an outlet module 300 (FIGS. 3A-B) or a switch module 900 (FIGS. 9A-B) plug into the wiring module functional side 2501, secured to the wiring module 2500 with attachment screws (not shown) that thread through attachment ears (not shown) and corresponding module mounts 2654, as described with respect to FIGS. 1-2, above. A power cable (not shown) routed to the electrical box attaches to pushwire connectors 2570 at the end of fixed wires 2550 extending from the wiring module wiring side 2502.



FIGS. 26A-B illustrate a fixed-wire wiring module 2500 having a front cover 2610, a back cover 2620, a terminal set 2630, a mounting bracket 2650, a ground bar clip 2660 and fasteners 2670. The front cover 2610 and back cover 2620 are secured together with the fasteners 2670 and enclose the terminal set 2632. Advantageously, the mounting bracket 2650 is partially enclosed by, and retained between, the front cover 2610 and back cover 2620 so as to secure the mounting bracket 2650 to, and mechanically and electrically integrate the mounting bracket with, the wiring module 2500.


As shown in FIGS. 26A-B the front cover 2610 has structured sockets 2612, a ground aperture 2614, support structure 2616 and fastener posts 2618. The structured sockets 2612 interlock with functional module shielded plugs and the ground aperture 2614 accommodates a ground bar or key bar as part of a ground socket in a manner as described with respect to FIGS. 20A-B, above. The support structure 2616 houses the terminal set 2630. The fastener posts 2618 align with fastener apertures 2624 and accept the fasteners 2670 securing the front cover 2610 to the back cover 2620.


Also shown in FIGS. 26A-B, the terminal set 2630 has power clips 2632, fixed wire terminals 2634 and breakaways 2638. The power clips 2632 provide the conductor portion of the structured sockets 2612 and are configured to physically and electrically connect with module prongs in a manner as described with respect to FIG. 21, above. The fixed wire terminals 2634 electrically and mechanically connect a striped end of the fixed wires 2550 (FIGS. 25A-B) to the terminal set 2630. The breakaways 2638 are removable to selectively isolate individual power clips 2632.


Further shown in FIGS. 26A-B, the mounting bracket 2650 is adapted to a channel extending lengthwise along the front cover 2610 and corresponding support structure extending lengthwise along the back cover 2620. The mounting bracket 2650 has box mounts 2652, module mounts 2654, a ground clip aperture 2656 and a ground terminal 2658. The box mounts 2652 accept fasteners (not shown) to secure the bracket to an electrical box (not shown). The module mounts 2654 accept fasteners (not shown) to secure a functional module (not shown) to the wiring module 2500. The ground clip aperture 2656 is adapted to the ground clip 2660, which connects a functional module ground bar electrically and mechanically to the bracket 2650. The bracket has an integrated rivet for securing the ground clip 2660 within the aperture 2656. The ground terminal 2658 electrically and mechanically connects a striped end of a ground one of the fixed wires 2550 (FIGS. 25A-B) to the bracket 2650.


Additionally shown in FIGS. 26A-B, the back cover 2620 has wire apertures 2622, fastener apertures 2624 and a breakaway aperture 2626. The wire apertures 2622 are adapted to the fixed wires 2550 (FIGS. 25A-B) so as to provide a seal around and strain relief for the fixed wires and access to the terminal set 2630 and ground terminal 2658. The fastener apertures 2624 accept that portion of the fasteners 2670 that thread into or are otherwise secured to the fastener posts 2618. The breakaway aperture 2626 allows user access to the breakaways 2638 within an assembled wiring module 2500.


Electrical Box Cover


FIGS. 27A-B illustrate an electrical box cover 2700 having a generally planar cover plate 2710, clamps 2720, catches 2730, trusses 2740 and markers 2750. The cover plate 2710 has a front side 2701 and a back side 2702. The clamps 2720 are located, one each, generally centered on the top and bottom of the cover plate 2710 and extend generally perpendicularly from the back side 2702. The catches 2730 are apertures, one for each catch 2730, that are generally centered on the catches 2720 and extending along the juncture between the catches 2730 and the cover plate 2710. The trusses 2740 are protrusions on the cover plate 2740 that extend substantially along the length of the front side 2701, providing structural support to resist bending of the cover plate 2710. The markers 2750 are generally round protrusions on the front side 2701 of the cover plate 2740 located, one each, proximate the top and bottom of the cover plate 2740.



FIGS. 28A-B illustrate an electrical box 2800 that is covered and uncovered, respectively, by a box cover 2700, as described with respect to FIGS. 27A-B, above. The box cover 2700 removably mounts over the electrical box open face 2801 so as to prevent material such as plaster and paint from fouling the wiring module 1600 during the makeup phase of construction. Advantageously, the box cover 2700 mounts generally flush with the electrical box open face 2801 and, hence, generally flush with installed drywall so as not to interfere with drywall construction during the makeup phase. Drywall, once loosely positioned, can be pressed against the box cover 2700. In doing so, the markers 2750 dimple the drywall, advantageously marking the location of the electrical box 2800 so that drywall cutouts can be accurately made to accommodate the electrical box 2800.


As shown in FIGS. 28A-B, the box cover 2700 is installed on the box mounts 1920 of a wiring module 1600 mounted within the electrical box 2800. In particular, the clamps 2720 flex somewhat to slide over the box mounts 1920 until the box mounts 1920 insert into corresponding catches 2730. The box cover 2700 can be easily removed by flexing the clamps 2720 so that a box mount 1920 clears a corresponding catch 2730.



FIG. 29 illustrate a 2-gang electrical box 2900 with overlapping box covers 2700. The box covers 2700 are configured so that a first portion 2791 of one cover overlaps a second portion 2792 of another cover so as to prevent drywall related material from entering between the covers 2700 and fouling the electrical box 2900 interior.


Terminal Shield


FIGS. 30A-B illustrate a terminal-block wiring module 1600 having a terminal shield 3100 installed on a wiring side 1602 using fasteners 1909. The terminal shield 3100 advantageously prevents bare copper ground wires (not shown), which typically are connected between the ground terminal 1907 (FIG. 17A) and an electrical box (not shown), from inadvertently protruding through the back cover 2200 (FIG. 17A) and short circuiting the terminal set 2100 (FIG. 17A).



FIGS. 31A-B illustrate a terminal shield 3100 having a front side 3101, a back side 3102 and a spine 3105. Mounting ears 3110 extend from both ends of the spine 3105, and shield wings 3120 extend from both sides of the spine 3105. Breakaway guards 3130 extend from a central portion of each shield wing 3120. A V-shaped hinge 3135 extending across a portion of each breakaway guard 3130 allows the breakaway guards 3130 to flex somewhat to gain access for removal of one or both of the breakaways 2116 (FIG. 16F), as described with respect to FIGS. 16G-H, above. Mounting apertures 3140 are defined in the mounting ears 3110, wire apertures 3150 are defined in the shield wings 3120, and a bracket aperture 3160 is defined in a central portion of the spine 3105.


As shown in FIGS. 31A-B, the terminal shield 3100 is installed with the back side 3102 proximate the wiring module 1600 (FIG. 30A) and the front side 3101 distal the wiring module 1600 (FIG. 30A). In particular, the spine 3105 fits against the bracket 1900 and the bracket aperture 3160 accommodates protrusions due to the ground clip 1902 (FIG. 17A) or its associated fastener. The mounting apertures 3140 accept the fasteners 1909 (FIG. 30A), which also secure together the wiring module 1600 (FIG. 30A). The shield wings 3120 cover exposed portions of the terminal set 2100 (FIG. 17A), and the wire apertures 3150 accommodate wire ends that are connected to the terminal set 2100 (FIG. 17A).


Other Functional Modules

Although described above with respect to outlet and switch modules, the electrical distribution system may operate in conjunction with a variety of functional modules providing various electrical functions, such as security modules, data transfer modules, computing modules, home entertainment modules and intelligent home product modules to name a few. For example, a security module may incorporate a video camera or motion sensor. A data transfer module may incorporate data storage devices, wireless transceivers or AC power line transceivers. A computing module may incorporate a microprocessor, a data entry or display device, for example. A home entertainment module may work in conjunction with speakers, LCD panels or plasma TVs. A home product module, for instance, may incorporate a microcontroller and a wireless or an AC power line transceiver for appliance control.


A safety module electrical distribution system has been disclosed in detail in connection with various embodiments. These embodiments are disclosed by way of examples only and are not to limit the scope of the claims that follow. One of ordinary skill in the art will appreciate many variations and modifications.

Claims
  • 1. An electrical wiring module comprising: a non-electrically conductive housing sized to fit within an electrical box, the housing having one or more electrical contacts associated therewith, the contacts being configured to electrically couple to an electrical outlet module;one or more fixed wires extending from the housing, the one or more fixed wires configured to couple to one or more power cables routed to the electrical box;wherein the one or more fixed wires are in communication with the electrical contacts so as to electrically couple the electrical outlet module to the one or more power cables when the electrical wiring module and the electrical outlet module are installed within the box; anda removable protective cover that covers the electrical contacts of the electrical wiring module when the electrical outlet module is not coupled to the electrical wiring module, the removable protective cover is configured to occlude the electrical contacts of the electrical wiring module from foreign materials wherein the removable cover is removed to allow insertion of the electrical outlet module.
  • 2. The electrical wiring module of claim 1, wherein the fixed wires are configured for wire connectors.
  • 3. The electrical wiring module of claim 1, further comprising one or more wire apertures that are configured to provide a seal around the one or more fixed wires where they extend from the housing.
  • 4. The electrical wiring module of claim 1, wherein the electrical contacts are arranged on a front side of the electrical wiring module and the one or more fixed wires extend from a back side of the electrical wiring module opposite the front side.
  • 5. The electrical wiring module of claim 1, wherein the electrical outlet module is at least partially housed within the electrical box when coupled to the electrical wiring module.
  • 6. The electrical wiring module of claim 1, wherein the electrical contacts are located in one or more recessed portions configured to receive one or more prongs extending from the electrical outlet module.
  • 7. The electrical wiring module of claim 1, wherein the electrical contacts are configured to removably couple with the electrical outlet module without the use of tools.
  • 8. The electrical wiring module of claim 1, wherein the electrical contacts are keyed to prevent improper installation of the electrical outlet module.
  • 9. The electrical wiring module of claim 1, wherein the wiring module is configured to be secured within the electrical box.
  • 10. The electrical wiring module of claim 9, wherein the wiring module is configured to be fixed directly to the electrical box.
  • 11. An electrical wiring module comprising: a non-electrically conductive housing sized to fit within an electrical box;one or more electrical power cable contacts configured to electrically couple with one or more power cables routed to the electrical box;one or more connectors disposed on a front face of the electrical wiring module, the connectors having one or more electrical contacts configured to electrically couple to a functional module;one or more conductors within the housing to electrically couple the one or more electrical power cable contacts with corresponding electrical contacts of the connectors so as to electrically couple the functional module to the one or more power cables when the functional module is coupled to the electrical wiring module; anda removable protective cover that covers the electrical contacts of the electrical wiring module when the functional module is not coupled to the electrical wiring module, the removable protective cover is configured to occlude the electrical contacts of the electrical wiring module from foreign materials wherein the removable cover is removed to allow insertion of the functional module.
  • 12. The electrical wiring module of claim 11, wherein the removable protective cover prevents coupling of the functional module to the electrical wiring module without prior removal of the protective cover.
  • 13. The electrical wiring module of claim 12, wherein the removable protective cover is generally planar.
  • 14. The electrical wiring module of claim 12, wherein the removable protective cover is configured to mount to the electrical box.
  • 15. The electrical wiring module of claim 12, wherein the connectors comprise plug-in connectors.
  • 16. The electrical wiring module of claim 15, wherein the connectors are configured to provide positive tactile feedback when a mechanical and electrical connection is made between the connectors and the functional module.
  • 17. The electrical wiring module of claim 11, wherein the one or more electrical power cable contacts comprise one or more fixed wires extending from the housing.
  • 18. The electrical wiring module of claim 17, wherein the one or more fixed wires extend from a side of the housing opposite or adjacent the front side.
  • 19. The electrical wiring module of claim 17, wherein the functional module is an electric outlet module.
CROSS-REFERENCE TO RELATED APPLICATIONS

Each of the following applications are hereby incorporated by reference in their entirety herein: U.S. patent application Ser. No. 11/493,366, entitled SAFETY MODULE ELECTRICAL DISTRIBUTION SYSTEM, filed Jul. 25, 2006, now U.S. Pat. No. 7,361,051, U.S. patent application Ser. No. 10/443,444 entitled SAFETY MODULE ELECTRICAL DISTRIBUTION SYSTEM, filed May 22, 2003, now U.S. Pat. No. 6,884,111, U.S. Provisional Applications No. 60/383,269, filed May 23, 2002, entitled SAFETY PLUG-IN MODULE ELECTRICAL DISTRIBUTION SYSTEM, and No. 60/441,852, filed Jan. 21, 2003, entitled SAFETY MODULE ELECTRICAL DISTRIBUTION SYSTEM.

US Referenced Citations (230)
Number Name Date Kind
723866 Hart Mar 1903 A
776855 La Har Dec 1904 A
949123 Klein Feb 1910 A
1171914 Wright Feb 1916 A
1328224 Benjamin Jan 1920 A
1938309 Williams Dec 1933 A
2163201 Kalencik Jun 1939 A
2189251 Potter Feb 1940 A
2433917 McCartney Jan 1948 A
2447597 Reed Aug 1948 A
2477803 Huber Aug 1949 A
2524701 Grill Oct 1950 A
2908743 Premoshis Oct 1959 A
2969518 Slater Jan 1961 A
3156761 Schinske Nov 1964 A
3189077 Willis, Jr. et al. Jun 1965 A
3214726 Cardenas et al. Oct 1965 A
3317881 Setecka May 1967 A
3467941 Martin Sep 1969 A
3489985 Martin Jan 1970 A
3510822 Patterson May 1970 A
3588786 Alfiero Jun 1971 A
3609647 Castellano Sep 1971 A
3654663 Algotsson Apr 1972 A
3710827 Eckert Jan 1973 A
3716651 Werner Feb 1973 A
3732524 Reed May 1973 A
3868161 Frantz Feb 1975 A
3879101 McKissic Apr 1975 A
3930704 Dekanic Jan 1976 A
3972498 Paskert Aug 1976 A
4103125 Marrero Jul 1978 A
4105884 Damsky Aug 1978 A
4117258 Shanker Sep 1978 A
4148536 Petropoulsos et al. Apr 1979 A
4165443 Figart et al. Aug 1979 A
4166934 Marrero Sep 1979 A
4179175 Farnworth et al. Dec 1979 A
4196521 Hutchinson et al. Apr 1980 A
4230386 Farnworth et al. Oct 1980 A
4263472 Maheu Apr 1981 A
4295018 Borrelli Oct 1981 A
4343411 Chesnut et al. Aug 1982 A
4372634 Ritchie et al. Feb 1983 A
4403824 Scott Sep 1983 A
4427864 Oster Jan 1984 A
4445739 Wooten May 1984 A
4485282 Lee Nov 1984 A
4493517 Hillary Jan 1985 A
4585902 Munroe Apr 1986 A
4599485 Smolik Jul 1986 A
4600258 Hu Jul 1986 A
4605270 Aslizadeh Aug 1986 A
4607906 Munroe Aug 1986 A
4612412 Johnston Sep 1986 A
4617613 Rice Oct 1986 A
4626052 Rumble Dec 1986 A
4627675 Taylor et al. Dec 1986 A
4634015 Taylor Jan 1987 A
4640564 Hill Feb 1987 A
4645089 Horsley Feb 1987 A
4664457 Suchy May 1987 A
4722693 Rose Feb 1988 A
4747506 Stuchlik, III May 1988 A
4750890 Dube et al. Jun 1988 A
4780088 Means Oct 1988 A
4784614 Sadigh-Behzadi Nov 1988 A
4798916 Engel et al. Jan 1989 A
4808127 Swanic Feb 1989 A
4842551 Heimann Jun 1989 A
4871893 Slovak et al. Oct 1989 A
4873469 Young et al. Oct 1989 A
4880950 Carson et al. Nov 1989 A
4914265 Mongeau Apr 1990 A
D308045 Counts et al. May 1990 S
4952164 Weber et al. Aug 1990 A
D310814 Rosenbaum Sep 1990 S
4967990 Rinderer Nov 1990 A
4972045 Primeau Nov 1990 A
4988840 Carson et al. Jan 1991 A
5003128 Grondin Mar 1991 A
D316250 Mongeau Apr 1991 S
5012043 Seymour Apr 1991 A
5030119 Lowe Jul 1991 A
5042673 McShane Aug 1991 A
5092787 Wise et al. Mar 1992 A
5098046 Webb Mar 1992 A
5178555 Kilpatrick et al. Jan 1993 A
5209444 Rinderer May 1993 A
5245507 Ericksen Sep 1993 A
D341125 Miller Nov 1993 S
5285014 Gilchrist Feb 1994 A
5288041 Webb Feb 1994 A
5289934 Smith et al. Mar 1994 A
5293097 Elwell Mar 1994 A
5297973 Gorman Mar 1994 A
5330137 Oliva Jul 1994 A
5342993 Siems Aug 1994 A
5386959 Laughlin et al. Feb 1995 A
5397929 Hogarth et al. Mar 1995 A
5399806 Olson Mar 1995 A
5415564 Winter et al. May 1995 A
5448011 Laughlin Sep 1995 A
5466164 Miyazaki et al. Nov 1995 A
5486121 Miller Jan 1996 A
5488121 O'Lenick, Jr. Jan 1996 A
5500487 Leon Mar 1996 A
5516068 Rice May 1996 A
5525755 Christensen Jun 1996 A
5551884 Burkhart, Sr. Sep 1996 A
5562952 Nakahigashi et al. Oct 1996 A
5608196 Hall et al. Mar 1997 A
5611701 Hahn Mar 1997 A
5613874 Orlando et al. Mar 1997 A
5625531 Padilla et al. Apr 1997 A
5639991 Schuette Jun 1997 A
D380452 Mix et al. Jul 1997 S
D384643 Nierlich et al. Oct 1997 S
5730617 Araki et al. Mar 1998 A
5741153 Schwer Apr 1998 A
5773757 Kenney et al. Jun 1998 A
5775935 Barna Jul 1998 A
5785551 Libby Jul 1998 A
5786551 Thangavelu Jul 1998 A
5807139 Volansky et al. Sep 1998 A
D399495 Bachschmid Oct 1998 S
5885088 Brennan et al. Mar 1999 A
5906497 Pham et al. May 1999 A
5925850 Park Jul 1999 A
5931325 Filipov Aug 1999 A
D415472 Kelso et al. Oct 1999 S
5967354 Whitehead et al. Oct 1999 A
5980279 Muller Nov 1999 A
5998747 Kelso et al. Dec 1999 A
6029581 Daoud Feb 2000 A
6036516 Byrne Mar 2000 A
D430114 Bachschmid et al. Aug 2000 S
6098939 He Aug 2000 A
6201187 Burbine Mar 2001 B1
6209836 Swanson Apr 2001 B1
6231358 Kerr, Jr. et al. May 2001 B1
6259351 Radosavljevic et al. Jul 2001 B1
6309248 King Oct 2001 B1
6311229 Burchard et al. Oct 2001 B1
6341981 Gorman Jan 2002 B1
6371790 Huang Apr 2002 B1
6392140 Yee et al. May 2002 B1
D461775 Littrell et al. Aug 2002 S
6441304 Currier et al. Aug 2002 B1
6461189 Koh Oct 2002 B1
6465735 May Oct 2002 B2
6484979 Medlin, Jr. Nov 2002 B1
6485336 Zebermann et al. Nov 2002 B1
6492591 Metcalf Dec 2002 B1
6494728 Gorman Dec 2002 B1
6530806 Nelson Mar 2003 B2
D472883 Harvey Apr 2003 S
6590155 Vrame et al. Jul 2003 B2
6617511 Schultz Sep 2003 B2
6623296 Okamoto Sep 2003 B2
6642450 Hsiao Nov 2003 B1
6648678 Kanekko Nov 2003 B1
6653566 Petak et al. Nov 2003 B2
6686540 Compagnone, Jr. Feb 2004 B2
6700062 Allen, Jr. Mar 2004 B1
6718674 Caveney et al. Apr 2004 B2
6730845 Criniti et al. May 2004 B1
6747206 Law Jun 2004 B1
6765146 Gerardo Jul 2004 B1
6767245 King Jul 2004 B2
6770814 Shotey et al. Aug 2004 B2
6774307 Kruse et al. Aug 2004 B2
6803521 Vrame Oct 2004 B2
6805567 Chapman et al. Oct 2004 B2
6817873 Gorman Nov 2004 B1
6820760 Wegner et al. Nov 2004 B2
6830477 Vander Vorste et al. Dec 2004 B2
6840785 Drane Jan 2005 B2
6843680 Gorman Jan 2005 B2
6850159 Mudge Feb 2005 B1
6863561 Gorman Mar 2005 B2
6867370 Compagnone, Jr. Mar 2005 B2
6870099 Schultz et al. Mar 2005 B1
6875922 Petak et al. Apr 2005 B1
6884111 Gorman Apr 2005 B2
6906260 Grendahl Jun 2005 B2
6908334 Huang Jun 2005 B2
6923663 Oddsen et al. Aug 2005 B2
6925850 Comer et al. Aug 2005 B2
6956169 Shotey et al. Oct 2005 B1
6967284 Gretz Nov 2005 B1
6979212 Gorman Dec 2005 B1
6986674 Gorman Jan 2006 B1
6986676 Tronolone et al. Jan 2006 B1
7052313 Gorman May 2006 B2
7071414 Kim Jul 2006 B2
7081009 Gorman Jul 2006 B2
7081010 Gorman Jul 2006 B2
7083466 Hwang Aug 2006 B1
7104836 Gorman Sep 2006 B1
7265291 Gorman Sep 2007 B1
7273392 Fields Sep 2007 B2
7312396 Gorman Dec 2007 B1
7323638 Radosavljevic Jan 2008 B1
7332683 Gorman Feb 2008 B2
7357652 Arenas et al. Apr 2008 B1
7361051 Gorman Apr 2008 B2
7367121 Gorman May 2008 B1
7390965 Hartwig Jun 2008 B2
7410072 Wegner et al. Aug 2008 B2
7442874 Compagnone, Jr. Oct 2008 B2
7468486 Yan Dec 2008 B2
7495170 Dinh et al. Feb 2009 B2
20020185296 Schultz et al. Dec 2002 A1
20030178218 Shotey et al. Sep 2003 A1
20030189043 Wegner et al. Oct 2003 A1
20030205654 Petak et al. Nov 2003 A1
20030233801 Bradley et al. Dec 2003 A1
20040048507 Hage Mar 2004 A1
20040129444 Adams et al. Jul 2004 A1
20050001123 Cheatham et al. Jan 2005 A1
20050067180 Dinh Mar 2005 A1
20050067546 Dinh Mar 2005 A1
20050176278 Cheatham et al. Aug 2005 A1
20050224249 Wegner et al. Oct 2005 A2
20050250378 Gorman Nov 2005 A1
20060021780 Hill Feb 2006 A1
20060065510 Kiko et al. Mar 2006 A1
20070072486 Gorman Mar 2007 A1
20070072487 Gorman Mar 2007 A1
Foreign Referenced Citations (1)
Number Date Country
2381040 May 2000 CN
Related Publications (1)
Number Date Country
20080190640 A1 Aug 2008 US
Provisional Applications (2)
Number Date Country
60383269 May 2002 US
60441852 Jan 2003 US
Continuations (2)
Number Date Country
Parent 11493366 Jul 2006 US
Child 12106984 US
Parent 10443444 May 2003 US
Child 11493366 US