The disclosed and claimed concept relates generally to electrical devices and, more particularly, to an electrical receptacle.
Numerous types of electrical receptacles are known in the relevant art. A typical electrical receptacle is one that is connected with line, neutral, and ground conductors and that is cooperable with an electrical connector of an electrically-operated device in order to provide electrical power to the device. One such type of electrical receptacle is a polarized duplex receptacle. While such electrical receptacles have been generally effective for their intended purposes, they have not been without limitation.
A conventional polarized duplex receptacle is typically capable of receiving an electrical connector in electric communication therewith in only a single orientation. This can cause difficulty when it is desired to connect electrical devices situated at different locations with the electrical receptacle because straining of the electrical cable that extends from the electrical connector can result. Difficulty is encountered if electrical devices are desired to be connected with the electrical receptacle from different directions, such as if the electrical receptacle is mounted to the upper surface of a conference table, and the like. While attempts have been made to provide electrical receptacles having a plurality of outlets in a plurality of different orientations, such electrical receptacles have had limited success due to their cost and size. Additionally, it is known that electrical surges or spikes can destroy sensitive electronics within an electrical device, which is preferably avoided. Improvements thus would be desirable.
An improved electrical receptacle meets these and other shortcomings in the relevant art by providing a plurality of outlets that are in different orientations. The electrical receptacle has a housing having a plurality of openings formed therein which are also referred to as contact openings, with each outlet having three contact openings. Each such outlet has a contact opening that is common with another outlet, meaning that a contact opening of one outlet and a contact opening of another outlet are actually an individual contact opening that is common to the two outlets and is thus shared therebetween. The electrical receptacle additionally includes a thermally protected metal oxide varistor (TMOV) that employs a thermal fuse and a metal oxide varistor (MOV) in order to protect electrical devices that are connected with the electrical receptacle from damage due to extended surges and spikes.
Accordingly, an aspect of the disclosed and claimed concept is to provide an improved electrical receptacle having a plurality of outlets that include a number of individual contact openings that are common between two or more outlets. As employed herein the expression “a number of” and variations thereof shall refer broadly to any non-zero quantity, including a quantity of one.
Another aspect of the disclosed and claimed concept is to provide an electrical receptacle that provides thermal metal oxide varistor (TMOV) protection to resist damage from extended surges or spikes.
Accordingly, an aspect of the disclosed and claimed concept is to provide an improved electrical receptacle structured to be electrically connected with a line conductor, a neutral conductor, and a ground conductor, the electrical receptacle further being structured to have a number of electrical connectors be placed in electrical connection therewith. The electrical receptacle can be generally stated as including a housing, an electrical apparatus that can be generally stated as including a line conduction element, a neutral conduction element, and a ground conduction element, the line conduction element being situated on the housing and structured to be electrically connected with the line conductor, the neutral conduction element being situated on the housing and structured to be electrically connected with the neutral conductor, the ground conduction element being situated on the housing and structured to be electrically connected with the ground conductor, a plurality of outlets that can be generally stated as including a first outlet and a second outlet, the first outlet can be generally stated as including a plurality of first openings formed in the housing, the plurality of first openings can be generally stated as including a first line contact opening that is in communication with the line conduction element, a first neutral contact opening that is in communication with the neutral conduction element, and a first ground contact opening that is in communication with the ground conduction element, the second outlet can be generally stated as including a plurality of second openings formed in the housing, the plurality of second openings can be generally stated as including a second line contact opening that is in communication with the line conduction element, a second neutral contact opening that is in communication with the neutral conduction element, and a second ground contact opening that is in communication with the ground conduction element, one of: i) the first line contact opening and the second line contact opening being an individual contact opening that is common between the first outlet and the second outlet, ii) the first neutral contact opening and the second neutral contact opening being an individual contact opening that is common between the first outlet and the second outlet, and iii) the first ground contact opening and the second ground contact opening being an individual contact opening that is common between the first outlet and the second outlet, and the first and second outlets being structured to alternatively have an electrical connector of the number of electrical connectors be placed in electrical connection with one of the first outlet and the second outlet.
A further understanding of the disclosed and claimed concept can be gained from the following Description when read in conjunction with the accompanying drawings in which:
Similar numerals refer to similar parts throughout the specification.
An improved electrical receptacle 4 in accordance with a first embodiment of the disclosed and claimed concept is depicted generally in
The electrical receptacle 4 can be said to include a housing 14 and an electrical apparatus 16. As is best shown in
As can further be seen in
As can further be seen in
The neutral conduction element 34 includes two sets of neutral contacts that are indicated at the numerals 52A and 52B, and which can be collectively or individually referred to herein with the numeral 52. The neutral conduction element 34 further includes a neutral bus 54 with which the neutral contact sets 52 are electrically connected. The neutral conduction element 34 additionally includes a neutral terminal 56 that is electrically connected with the neutral bus and that is electrically connectable with the neutral conductor 8.
The ground conduction element 36 can be said to include four sets of ground contacts that are indicated at the numerals 60A, 60B, 60C, and 60D, and which can be collectively or individually referred to herein with the numeral 60. The ground conduction element 36 further includes a ground bus 64 to which the ground contact sets 60 are electrically connected. The ground conduction element 36 further includes a ground terminal 66 electrically connected with the ground bus 64 and that is electrically connectable with the ground conductor 10.
As can be understood from
As can further be seen in
In a similar fashion, the outlet 70C has a line contact opening 72C, a neutral contact opening 76C, and a ground contact opening 78C. Similarly, however, the line contact opening 72B and the line contact opening 72C are the same single opening, meaning that they are an individual line contact opening 74 that is shared between the outlets 70B and 70C.
In a like fashion, the outlet 70D has a line contact opening 72D, a neutral contact opening 76D, and a neutral contact opening 78D. However, the neutral contact openings 76C and 76D are the same single contact opening, which is an individual neutral contact opening 75 that is common between the outlets 70C and 70D.
The line contact openings 72A, 72B, 72C, and 72D may be collectively or individually referred to herein with the numeral 72. The neutral contact openings 76A, 76B, 76C, and 76D may be collectively or individually referred to herein with the numeral 76. The ground contact openings 78A, 78B, 78C, and 78D may be collectively or individually referred to herein with the numeral 78.
As can be understood from
The neutral contact openings 76A and 76B employ another opening 22 that is in communication with the neutral contact set 52A. Likewise, the neutral contact openings 76C and 76D employ another opening 22 that is in communication with the neutral contact set 52B.
The ground contact openings 78A, 78B, 78C, and 78D employ four other openings 22 that are in communication with the ground contact sets 60A, 60B, 60C, and 60D, respectively.
As is best shown in
As can be understood from
It is noted, however, that the electrical connector 12B could be disconnected from the outlet 70C and instead electrically connected with the outlet 70D. This is the configuration depicted generally in
A further alternative is depicted in
It thus can be seen that the electrical receptacle 4 advantageously can have one or two electrical connectors 12 connected therewith at any given time. Such electrical connectors 12 can be situated in any of a plurality of orientations relative to the housing 14 due to the outlets 70 being situated in different orientations thereon, thereby enabling the electrical cable that is connected with the electrical connector 12 to extend in any of a variety of directions, and thereby relieving wire strain. Such versatility is accomplished by providing the individual neutral contact openings 73 and 75 and the individual line contact opening 74, which are each common among a pair of the outlets 70, and which thereby enable four outlets 70 to be provided in only a limited amount of space. This is enabled because, for example, the individual neutral contact opening 73 will receive therein the neutral prong 84 of the electrical connector 12 regardless of whether the electrical connector 12 is received in the outlet 70A (depicted in short dashed lines in
Further advantageously, the protection apparatus 40 includes a printed circuit board 88 that is receivable in a slot 89 formed in the rear housing portion 20 and which includes thereon a thermally protected metal oxide varistor (TMOV) 90. In the depicted exemplary embodiment, the exemplary protection apparatus 40 further includes a light emitting diode (LED) 92 that is also mounted on the printed circuit board 88 and which is observable through a hole 93 formed in the front housing portion 18.
As can be understood from
In the exemplary depicted embodiment, the MOV 96 is a radial leaded MOV, and the thermal fuse 94 is an integrated thermally active element. The integrated configuration offers lower inductance than most discrete solutions, which results in improved clamping performance in response to fast over-voltage transients.
During normal operation of the electrical receptacle 4, the thermal fuse 94 is intact, and the LED 92 will be continuously illuminated. In the event of a surge or a transient that occurs in what can be considered to be normal conditions, the MOV 96 suppresses the voltage by clamping to a suitable control voltage, and the thermal fuse 94 remains intact, whereupon the LED 92 will continue to be continuously illuminated. However, in the event of a surge or transient in an abnormal overvoltage and limited current condition, the thermal fuse 94 will be overheated and will create an open circuit between the line conduction element 30 and the connection point 98, whereupon the LED 92 will cease to be illuminated. As such, if, during operation, the LED 92 is observed to be non-illuminated, this will indicate that the surge protection afforded by the protection apparatus 40 is disabled due to an abnormal overvoltage with limited current and is in need of replacement.
An improved electrical receptacle 104 in accordance with a second embodiment of the disclosed and claimed concept is depicted generally in
In a fashion similar to the electrical receptacle 4, the electrical receptacle 104 includes a plurality of outlets 170A, 170B, 170C, and 170D, which may be collectively or individually referred to herein with the numeral 170. It is noted, however, that the plurality of outlets 170 are arranged in two banks of two outlets 170, i.e., the outlets 170A and 170B form a first bank, and the outlets 170C and 170D form a second bank.
The plurality of outlets 170 include a plurality of line contact openings 172A, 172B, 172C, and 172D, which may be collectively or individually referred to herein with the numeral 172. The outlets 170 further include a plurality of neutral contact openings 176A, 176B, 176C, and 176D, which may be collectively or individually referred to herein with the numeral 176. Likewise, the plurality of outlets 170 further include a plurality of ground contact openings 178A, 178B, 178C, and 178C, which may be collectively or individually referred to herein with the numeral 178. As can be understood from
As can further be seen in
The oblique orientation enables all of the contact openings 172, 176, and 178 to be spaced from the faceplate 115, which is desirable. Furthermore, such oblique orientation of the axes 179A and 179B permits electrical devices having electrical connectors 12 to be connected with the outlets 170 from a plurality of directions while reducing strain on the electrical wiring of the electrical devices.
It can be seen that one of the electrical connectors 12 can be alternatively received in either of outlets 170A and 170B, and it can be seen that another electrical connector 12 can be alternatively received in either of outlets 170C and 170D regardless of which of the outlets 170A and 170B has the one electrical connector 12 connected therewith. As such, an electrical connector 12 can be received in the outlet 170B simultaneously with another electrical connector 12 being received in the outlet 170C. Other variations will be apparent.
An improved electrical receptacle 204 in accordance with a third embodiment of the disclosed and claimed concept is depicted generally in
The ground contact openings 278 form an individual ground contact opening 277 that is common to all four of the electrical outlets 270. That is, the individual ground contact opening 277 will receive the ground prong 86 therein of the electrical connector 12 that is electrically connected with any one of the four outlets 270. In this regard, it is understood that only a single electrical connector 12 is alternatively collectable with one of the outlets 270 from among the four outlets 270. However, the four outlets 270 enable an electrical device to be connected with the electrical receptacle 204 from any of a large number of directions while reducing strain on the wiring of such electrical device.
While specific embodiments of the disclosed concept have been described in detail, it will be appreciated by those skilled in the art that various modifications and alternatives to those details could be developed in light of the overall teachings of the disclosure. Accordingly, the particular arrangements disclosed are meant to be illustrative only and not limiting as to the scope of the disclosed concept which is to be given the full breadth of the claims appended and any and all equivalents thereof.
Number | Name | Date | Kind |
---|---|---|---|
3343117 | Carlson | Sep 1967 | A |
3441896 | Hawkins | Apr 1969 | A |
3975075 | Mason | Aug 1976 | A |
4545631 | Zampini | Oct 1985 | A |
4583799 | Wiley | Apr 1986 | A |
5007848 | Lee | Apr 1991 | A |
5224009 | Misencik | Jun 1993 | A |
6010347 | Lee | Jan 2000 | A |
6328584 | Follett | Dec 2001 | B1 |
D505856 | Kim | Jun 2005 | S |
6923663 | Oddsen | Aug 2005 | B2 |
7435091 | Cruz | Oct 2008 | B1 |
7547221 | Kim | Jun 2009 | B2 |
7789686 | Kim | Sep 2010 | B2 |
8348682 | Draggie | Jan 2013 | B1 |
8439692 | Oddsen | May 2013 | B1 |
8471718 | Miller | Jun 2013 | B1 |