Removably attachable cover handles for electric power watthour meter

Information

  • Patent Grant
  • 6823563
  • Patent Number
    6,823,563
  • Date Filed
    Monday, August 26, 2002
    22 years ago
  • Date Issued
    Tuesday, November 30, 2004
    20 years ago
Abstract
A handle adapted to be mounted on a watthour meter cover facilitates movement of the watthour meter relative to a meter socket. The handle is removably attachable to a handle receiver carried on the cover, with the handle defining a finger grip surface. The receiver is in the form of one or more recesses or projections which are engagable with complimentary portions on the handle.
Description




BACKGROUND




Electrical power is supplied by an electric utility to individual use sites by power line conductors which extend from the utility poles to a meter socket mounted on a convenient surface at the use site. The power line conductors are physically connected to line jaw contacts in the meter socket. Distribution conductors extend from load jaws mounted in the socket throughout the use site.




An electric power watthour meter is provided for measuring the power consumed by a use site by measuring the current drawn by the use site from the line to the load conductors. A watthour meter typically has a base on which metering components are mounted. Blade terminals extend from the base for interconnection in the socket line and load jaw contacts so as to place the meter in series between the power line conductors and the power load conductors. A dome historically formed of glass surrounds the electromechanical components mounted on the watthour meter base. The dome includes a mounting flange having slots which engage mating projections on the base so as to lock the dome to the base when the dome is rotated 10° after connection to the base. A seal or key is used to then lock the dome to the base.




With the advent of electronic meters and automatic meter reading equipment, the glass dome has been replaced with a plastic dome or cover typically having a view window in an end wall for viewing an electronic display of power consumption. The plastic domes are still formed with a mounting flange with slots for engagement with a standard meter base carrying the blade terminals and metering components.




The watthour meter is installed in the socket and/or a socket adapter or socket extender mounted in the socket which also carries mating jaw contacts by inserting the meter blade terminals into the meter socket or socket adapter jaw contacts.




Although watthour meters typically remain in place for many years without removal, it still becomes necessary from time to time to remove the meter for accurately testing, repair, replacement or to add additional functionality to the meter socket or watthour meter itself. The smooth, tapered, cylindrical shape of the watthour meter dome or cover makes it difficult to pull the meter from the socket. The dome itself would be a convenient place for a utility service person to grasp the meter and exert a pull-out force as the utility person would like to keep his or her fingers away from the meter mounting base which is generally in close proximity to the live power conductors and jaw contacts in the meter socket. However, heretofore there has been no convenient surface on a watthour meter dome for easy grasping by the utility service person to facilitate removal with low pull-out forces. Thus, it would be desirable to provide a watthour meter which is designed to facilitate easy removal from a meter socket or socket adapter.




When a watthour meter is installed in a meter socket or meter socket adapter mounted in a meter socket, it is critical that the meter line blades be properly oriented for insertion into the meter socket or meter socket adapter line jaw contacts. However, existing watthour meter domes have a round shape which lacks any external visual or tactile indication of a top point or portion of the meter which would insure that the line blades are properly orientated for engagement with the line jaw contacts in the meter socket or meter socket adapter. Without such visual or tactile indication, it is possible for the utility serviceperson to inadvertently insert the meter 90° out of normal mounting orientation into the meter socket. This places the one line blade terminal and one load blade terminal of the watthour meter in a direct short position across the meter socket or meter socket adapter line jaw contacts. Such an electrical fault can cause injury to the utility serviceperson and/or damage to the meter socket as a result of a typically explosive short circuit at full line power.




It is also possible for the utility serviceperson to insert the meter 180° out of normal mounting orientation into the meter socket or socket adapter. This places the meter in a mounting condition which causes the meter to run backwards thereby subtracting power. Indeed, this is common method of stealing electric power.




These mounting problems are exacerbated in the case of electronic meters which still have a round cross section; but are usually formed with an opaque cover which thereby eliminates any possibility of viewing the internal meter components to determine the proper orientation of the meter for installation in a meter socket or socket adapter. Even the display in such electronic meters is off or blank until the meter is installed in the socket such that the display cannot any visual indication of proper meter mounting orientation during installation.




It is also known to provide an attachable handle to a watthour meter to facilitate removal of the watthour meter from a meter socket. Such a handle requires a complicated attachment mechanism which secures the handles to the meter base flange or via a strap to the cover itself. Such attachable meter handles are difficult to use, have a complicated and therefore costly construction, and still provide only an insecure attachment at best.




Thus, it would be desirable to provide a handle which is releasably attachable to a meter cover to facilitate meter removal from a meter socket or meter socket adapter. It would also be desirable to provide a releasably attachable handle for a meter cover which does not interfere with the cover or meter operation. It would also be desirable to provide a releasably attachable handle for a meter cover which can be easily attached and removed from the cover when not in use. It would also be desirable to provide a releasably attachable handle for a watthour meter cover which does not significantly enlarge the meter cover volume.




SUMMARY




The present invention is a cover for a watthour meter which has a handle removably attachable thereto to facilitate low pull-out force removal of the watthour meter from a meter socket or meter socket adapter.




The present invention also is a watthour meter having a cover with unique removably attachable handles.




The unique removably attachable cover handle of the present invention provides significant advantages in terms of facilitating easy removal and, in some aspects, installation of a watthour meter, from or to a watthour meter socket or socket adapter mounted in a watthour meter socket. The handle provides a convenient gripping surface for easy pull-out force application to separate the meter from the meter socket or socket adapter. At the same time, the handle does not interfere with the normal function of the cover or viewing of power consumption readout displays through the end wall of the cover.




The removably attachable cover handle according to the present invention addresses a long time problem encountered with the use of watthour meters which lack a convenient surface to facilitate easy, pull-out from a meter socket or meter socket adapter. According to the present invention, the handles or gripping surface is easily attachable to the meter cover to enable a utility serviceperson to easily grasp the cover handle and exert a smooth pull-out force to separate the meter from the meter socket or socket adapter jaw contacts.




The cover handle of the present invention may also be used to increase the installation safety of a watthour meter in a meter socket or socket adapter since selected aspects of the handle receiver, when mounted on the cover at a top or upper position to indicate the normal mounting orientation of the watthour meter in a meter socket, insure that the watthour meter line and load blade terminals are properly aligned with the corresponding line and load jaw contacts in the meter socket or socket adapter. Specifically, the mounting of the handle of the present invention at a position on the cover which would indicate visually as well as tactally the normal top of the watthour meter when the watthour meter is in its normal mounting orientation with respect to the meter socket jaw contacts, can provide a standardized indication of proper meter orientation prior to installation in the meter socket or socket adapter. This increases installation safety by minimizing the possibility of a 90° our of orientation mounting of the watthour meter in the meter socket which can cause a dangerous electric fault. This also minimizes the possibility of mounting the watthour meter 180° out of normal mounting orientation in a meter socket which is the common method used to steal unmetered electric power.











BRIEF DESCRIPTION OF THE DRAWING




The various features, advantages and other uses of the present invention will become more apparent by referring to the following detailed description and drawing in which:





FIG. 1

is an exploded perspective view of a watthour meter cover handle apparatus constructed in accordance with one aspect of the present invention;





FIG. 2

is an exploded perspective view of another aspect of a watthour meter cover handle apparatus according to the present invention;





FIG. 3

is an exploded perspective view of yet another aspect of a watthour meter cover handle apparatus according to the present invention;





FIG. 4

is an enlarged, partial, side elevational view showing the interconnection of the handle and cover shown in

FIG. 3

;





FIG. 5

is an exploded perspective view of yet another aspect of a watthour meter cover handle apparatus according to the present invention;





FIG. 6

is an exploded perspective view of yet another aspect of a watthour meter cover handle apparatus according to the present invention;





FIG. 7

is an exploded perspective view of yet another aspect of a watthour meter cover handle apparatus according to the present invention;





FIG. 8

is an exploded perspective view of yet another aspect of a watthour meter cover handle apparatus according to the present invention;





FIG. 9

is an exploded perspective view of yet another aspect of a watthour meter cover handle apparatus according to the present invention;





FIG. 10

is a cross-sectional view showing the mounting of the handle end in the cover recess depicted in

FIG. 9

;





FIG. 11

is an exploded perspective view of another aspect of a watthour meter cover handle apparatus according to the present invention;





FIG. 12

is an exploded perspective view of yet another aspect of a watthour meter cover handle apparatus according to the present invention;





FIG. 13

is an exploded perspective view of yet another aspect of a watthour meter cover and handle apparatus according to the present invention; and





FIG. 14

is an exploded perspective view of yet another aspect of a watthour meter cover handle apparatus according to the present invention.











DETAILED DESCRIPTION




Referring now to the drawings, there is depicted a watthour meter cover or dome which has unique removably attachable handle apparatus to facilitate the removal of the watthour meter from a meter socket.




As shown in

FIG. 1

, the meter cover or dome, both hereafter refer to simply as the “cover”, is typically formed of a one piece body


10


of a suitable material, preferably a plastic, such as polycarbonate, for example. The cover


10


includes a generally cylindrical sidewall


12


which tapers from a first, smaller diameter end


14


to an opposed larger diameter second end


16


. A radially extending flange


18


projects from the second end


16


of the sidewall


12


and terminates in a longitudinally extending rim


20


.




As is conventional, a plurality of circumferentially spaced slots


22


are formed in the flange


18


for engagement with mounting projections


23


on a watthour meter base


25


. As is conventional, the rim


20


and flange


18


of the cover


10


are inserted over the base


25


with the slots


22


aligned with the meter base projections


23


. The meter cover


10


is then rotated 90° to lock the cover


10


to the base


25


. A key, not shown, is typically inserted through the cover


10


into the base


25


to lock the cover


10


to the base


25


.




The use of the rim


20


and flange


18


on the cover which are rotated into engagement with the base of a meter is by way of example only. As shown pictorially in

FIG. 1

, the watthour meter includes a base


25


having projections


23


spaced circumferentially around one surface for rotational engagement with the slots


22


on the cover


10


. Not shown in

FIG. 1

are metering components which may take any suitable metering form, such as electromechanical rotating disk-type metering components as well as electronic metering circuits.




Other means for attaching the cover


10


to the base


25


may also be employed. Such means may not make use of the rotationally interconnected projections


23


and slots


22


, but rather use other types of fastening means to secure the cover


10


to the base


25


. Such alternate attachment configurations may also not require the flange


18


on one end of the cover


10


.




As shown in

FIG. 1

, an optional aperture


26


is formed in a solid end wall


28


at the first end


14


of the cover


10


. The aperture


26


which is typically closed by a display mounted on the meter base allows external viewing of the power consumption numeric outputs on the display as is conventional in electronic or automatic meter reading watthour meters. Alternately, the optional aperture


26


can be replaced by forming at least the end wall


28


or the entire cover


10


from a transparent plastic.




By way of further background, the assembled watthour meter, including the cover


10


and the base


25


, are mounted in engagement with jaw contacts in a watthour meter socket or a watthour meter socket extender or socket adapter mounted in a meter socket. Blade terminals, not shown in

FIG. 1

, project exteriorly from an exterior surface of the base


25


into engagement with the jaw contacts in the socket adapter and/or socket so as to place the watthour meter in series with the utility power line conductors and the distribution load conductors, each also connected to the socket jaw contacts.




Since accurate power consumption measurement requires a secure electrical connection between the watthour meter blade terminals and the socket jaws, the socket jaws and/or the socket adapter jaws, are typically formed to have a high blade terminal retention force. This retention force, translates to a high watthour meter pull-out force.




In order to facilitate the removal of the watthour meter from a socket and/or watthour meter socket adapter, the present invention provides a unique handle means which are removably attachable to the cover


10


.




In one aspect of a removable handle apparatus shown in

FIG. 1

, a handle


30


is formed of a grip portion


32


typically in the form of an elongated bar having a central aperture


34


for receiving the user's fingers. A generally planar stem


36


of constant cross-section projects from one side edge of the bar


32


. A wedged shape receiver engagement member


38


projects from one end of the stem. The receiver engagement member


38


has a wedge shape wherein an outer end


40


has a wider width than an opposed inner end


42


adjacent to or connected to the stem


36


.




In this aspect of the invention, a handle receiver


44


is formed in the cover


10


generally at the edge of the sidewall


12


and the end wall


14


. The receiver


44


is in the form of a recess having a first width end


46


projecting longitudinally from the end wall


28


along one portion of the sidewall


12


and a larger width portion


48


inward of the first width portion


44


. The sidewalls


47


forming the first and second width portions


46


and


48


taper inwardly in decreasing width from the innermost end of the second width portion


44


to the smaller width end at the end wall


28


. The outer end portion of the smaller width end overhangs the lower inner edge.




In use, the wedge shaped end


38


of the handle


30


is inserted into the second width portion


48


of the recess


44


. The handle


30


is then urged longitudinally outward with respect to the end wall


28


of the cover


10


bringing the side edges


50


and


52


of the wedge shaped end


38


into interfering engagement with the corresponding inward tapering sidewalls of the first width portion


46


of the recess


44


. This tightly fixes the handle


30


in the recess


44


and enables the user to exert a pull-out force, which may include a rocking component, to remove the entire meter from a meter socket or meter socket adapter.




To release the handle


30


from the recess


44


, the handle


30


is urged longitudinally toward the end wall


28


until the wedge-shaped end


38


moves into the second larger width portion


48


of the recess


44


which enables the wedge shaped end


38


and the stem


36


to be urged upward out of the recess


44


.




Another aspect of a removable handle apparatus


54


is shown in FIG.


2


. The handle


54


includes a bar-like grip portion


56


having an internal aperture


58


for receiving the user's fingers. A generally constant diameter stem


60


projects from one side of the bar


56


and includes a central finger


62


which is spaced by slots


64


and


66


from laterally outward extending side fingers


66


and


68


, respectively.




A handle receiver


70


includes an inverted T-shaped recess formed in the cover


10


extending longitudinally from the end wall


28


along one portion of the sidewall


12


. Preferably, the recess, also denoted by reference number


70


, is positioned at the top of the cover


10


when the cover


10


and the attached meter are in a normal, mounting position in a meter socket. The recess


70


has a larger width bottom portion


72


and a smaller width upper portion


74


.




In use, the stem


60


of the handle


54


is inserted into the recess


70


with all of the fingers


62


,


66


and


68


sliding into the larger width bottom portion


72


of the recess


70


. Since the width of the bottom portion


72


is smaller than the nominal outside width between the outer side edges of the side fingers


66


and


68


, the side fingers


66


and


68


are urged laterally inward toward the central finger


62


thereby forceably retaining the handle


54


in the recess


70


.




The central finger


62


may be provided with an aperture


76


which is shaped complimentary to a projection


78


extending from the bottom portion of the sidewall


12


in the recess


70


. Either the bottom edge of the central finger


62


or the end wall facing end of the projection


78


can be formed with a ramp or radiused surface to urge finger


62


upward and over the projection


78


until the projection


78


snaps into the aperture


76


in the finger


62


. This engagement locks the handle


54


in the recess


70


for removal of the meter from a meter socket.




It will be understood that the aperture


76


may be formed as an inward extending closed recess in the sidewall


72


of the cover


10


and the complimentary projection formed on the central finger


62


.




The handle


54


may be separated from the cover


10


by inserting a tool or a user's finger beneath the inner end of the central finger


62


which will be spaced a short distance from the inner end of the recess


70


. The user exerts an upward force to disengage the central finger


62


from the projection


78


allowing the entire handle


54


to be slid outward from the recess


70


.




Another aspect of the handle apparatus of the present invention is shown in

FIGS. 3 and 4

. In this aspect, the handle


80


has a bar-like grip


82


which is centrally located between two generally perpendicular extending side legs


84


and


86


. The side legs


84


and


86


terminate in at least one and preferably a pair of spaced, resilient arms


88


and


90


, each of which has a hook-shaped, enlarged end


92


. Each pair of arms


88


and


90


has a certain amount of resiliency to enable the arms


88


and


90


to be urged toward each other as the handle


82


is inserted into a handle receiver on the cover


10


.




The handle receiver is in the form of a pair of C-shaped bars


94


mounted on diametrically opposite sides of the sidewall


12


of the cover


10


. A central portion of each bar


94


is spaced from the adjoining surface of the sidewall


12


to form an aperture


96


which is sized to receive the arms


88


and


90


of each of the side legs


84


and


86


of the handle


80


.




During insertion, the arms


88


and


90


of each side leg


88


and


86


are urged toward each other until the hook-like ends


92


of each of the arms


88


and


90


clear the inner edge of the bar


94


. The arms


88


and


90


then snap outward to their nominal position whereby the enlarged hook-like end


92


of the each of the arms


88


and


90


on each side leg


84


and


86


are positioned behind the side leg of the bar


94


locking the handle


80


to the cover


10


.




In this position, at least one stop member


98


and


100


is respectively mounted on an inner surface of the side legs


84


and


86


to engage the end wall


14


of the cover


10


. The stop members


98


and


100


act as a insertion stop limit for connection of the handle


80


to the cover


10


as well as placing a biasing force on the ends


92


of the arms


88


and


90


to retain the arms


88


and


90


in a latched position with the handle receiver bar


94


.




Another aspect of a meter cover handle apparatus according to the present invention is shown in FIG.


5


. In this aspect, the handle


104


includes a central grip member


106


and a pair of angularly extending, resilient, side legs


108


and


110


which extend generally perpendicularly from opposite ends of the central grip


106


. Weight and material reducing bores


112


are formed in the central grip


106


and the arms


108


and


110


. Receiver engagement members


114


and


116


, generally in the form of apertures in this aspect of the invention, are formed in the ends of the side legs


108


and


110


.




The handle receiver is in the form of at least one and preferably a pair of diametrically opposed projections


118


and


120


. Each of the projections


118


and


120


is an enlarged headed pin having a small diameter shank


122


and an enlarged head


124


. The diameter of the apertures


114


and


116


is greater than the diameter of the enlarged head


124


of each projection


118


and


120


to enable the apertures


114


and


116


to slide over the heads


124


of each of the projections


118


and


120


during attachment of the handle


104


to the cover


10


.




Once the apertures


114


and


116


pass over the enlarged heads


124


, the apertures


114


and


116


will be disposed along the shank


122


of each projection


118


and


120


. This removably attaches the handle


104


to the cover


10


and enables the user to exert a pull-out force on the handle


104


to separate the meter from the meter socket. To remove the handle


104


from the cover


10


, the ends of the side legs


108


and


110


are pulled outward from the sidewall


12


until the apertures


114


and


116


clear the projections


118


and


120


, respectively.





FIG. 6

depicts a similar handle apparatus according to the present invention. However, in this aspect, the receiver engagement members are in the form of a circular aperture


130


and a cross-shaped slot


132


located adjacent the ends of each of the side legs


109


and


111


.




The handle receivers, in this aspect of the invention, include at least one and preferably a pair of projections


134


and


136


, diametrically spaced on opposite sides of the sidewall


12


of the cover


10


, generally adjacent to the end wall


28


. Each pair of projections


134


and


136


includes a generally cylindrical projection


134


and a second projection having an enlarged head


137


on a smaller diameter shank


138


.




During connection of the handle


105


to the cover


10


in this aspect of the invention, the side legs


109


and


111


are urged past the pair of projections


134


and


136


on the cover


10


until the apertures


130


and


132


can slidably engage the cylindrical projections


134


and


136


. In this position, the center portion of the cross-like slots


132


in each of the side legs


109


and


111


will be positioned over and can slide past the enlarged head


137


until the slot


132


slides over the smaller diameter shanks


138


. The grip


107


can then be urged slightly outward with respect to the end wall


28


of the cover


10


so that the shanks


138


slide into a smaller end portion of each of the cross-shaped slots


132


and


136


. It should be noted that the diameter of the apertures


130


is chosen to allow some longitudinal movement of the handle


105


relative to the cover


10


.




A simple opposite sequence is employed to separate the handle


105


from the cover


10


. A laterally outward directed force is required to separate the ends of the side legs


109


and


111


from the pairs of projections


134


and


136


on the cover


10


.




Yet another aspect of a handle apparatus according to the present invention is shown in FIG.


7


. In this aspect, the handle


144


is in the form of a flexible strap having apertures


146


and


148


at opposite ends. Each of the apertures


146


and


148


has a diameter sized to slide over an enlarged head


150


of one of a pair of projections


152


which are mounted on diametrically opposed portions on the sidewall


12


of the cover


10


adjacent to the end wall


28


. It will be understood that although the projections


152


and


154


are depicted as being at the twelve o'clock and the six o'clock positions on the cover


10


in

FIG. 7

, the projections


152


and


154


can also be at the three o'clock and nine o'clock position or at any other angular position on the cover


10


.




In operation, the handle


144


is positioned adjacent to the end wall


28


and the apertures


146


and


148


urged over the enlarged heads


150


of each of the projections


152


and


154


. The handle


144


can then be pulled outward from the end wall


28


to lock the projections


146


and


148


about the smaller diameter shanks or projections


152


and


154


. The user can then exert the necessary outward pulling force on the handle


144


to separate the meter from the meter socket.




Another aspect of a handle apparatus of the present invention is shown in FIG.


8


. In this aspect, the handle


160


is in the form of a plate


162


having a pair of side mounted hand grips


164


and


166


. Each of the hand grips


164


and


166


is formed of a bar having a central portion and two side legs joined to and extending from the plate


162


. The receiver engagement members are at least one and preferably a pair of key-hole slots


168


and


170


in the plate


162


. The slots


168


and


170


are adapted to be aligned with the handle receiver formed on the cover


10


which are generally in the form of a pair of spaced projections or pins


172


and


174


, each having an enlarged head


176


. The enlarged heads


176


are adapted to receive the enlarged diameter portion of each key-hole slot


166


and


170


to bring the plate


162


into engagement with the end wall


28


of the cover


10


. The plate


162


is then urged downward in the orientation shown in

FIG. 8

bringing the smaller diameter or cross-section of each of the key-hole slots


166


and


170


into engagement with the smaller diameter pin portion of each of the projections


172


and


174


thereby fixing the plate


162


on the end wall


14


of the cover


10


. The user can then exert an outward pulling force via the grips


164


and


166


to remove the meter from the meter socket. The same mounting of the handle


160


on the end wall


28


of the cover


10


can be used to exert an inward insertion force to forcibly mount the meter in a meter socket or meter socket adapter.




In the aspect of the invention shown in

FIGS. 9 and 10

, a handle


180


includes a central grip portion


182


and two side legs


184


and


186


extending generally perpendicular from opposite ends thereof. Each of the side legs


184


and


186


terminates in an inward extending enlargement or hook


188


and


190


, respectively. The enlarged ends


188


and


190


are sized to fit into and releasably latch in complimentary shaped receiver recesses


192


and


194


, respectively, formed in the sidewall


12


of the cover


10


, spaced a short distance from the end wall


14


.




A limit stop pin


196


and


198


, is mounted on an inner surface of each of the side legs


184


and


186


and spaced from the associated inward projection


188


or


190


, respectively, to limit sliding insertion of the handle


180


relative to the cover


10


. At the same time, the limit stop pins


196


and


198


exert a biasing force on the side legs


184


and


186


to maintain the enlarged end portions


188


and


190


in the recesses


192


and


194


.




An outward force may be exerted on the ends of each of the side legs


184


and


186


to separate the enlarged ends


188


and


190


from the recesses


192


and


194


to enable separation of the handle


180


from the cover


10


.




Referring now to

FIG. 11

, in this aspect of the present invention the handle receiver is in the form of a pair of projections, including a generally cylindrical pin-like shaped projection


200


and a projection


202


having a constant diameter shank which terminates in an enlarged head


204


. The projections


200


and


202


are mounted in any suitable position on the sidewall


12


closely spaced from the end wall


28


. A mounting advantage can be obtained if the projections


200


and


202


are mounted at the twelve o'clock position for the normal mounting position of the cover


10


on a meter socket.




In this aspect of the invention, a handle


208


includes a bar-shaped member


210


having a slot-shaped aperture


212


forming a finger grip along one edge of the bar-shaped member


210


. An elongated stem


214


extends from the bar-shaped member


210


. Apertures


216


and


218


are formed in the stem


214


and are complimentary shaped to the projections


200


and


202


, respectively, so as to be slidably received thereover and longitudinally shifted to lock the handle


208


to the cover


10


.




In operation, the handle


208


is moved toward the cover


10


until the apertures


216


and


218


are aligned with the projections


200


and


202


, respectively. The stem


214


is then dropped over the projections


200


and


202


such that the projections


200


and


202


slide through the apertures


216


and


218


, respectively. It should be noted that the enlarged end portion of the key-hole shaped slot forming the aperture


218


is sized to receive the enlarged head


204


of the projection


202


. The handle


208


is then shifted longitudinally outward with respect to the end wall


28


to bring the smaller diameter shaft of the projection


202


into engagement with the smaller width section of the slot or aperture


218


. This locks the handle


208


to the cover


10


for removal of the watthour meter from a meter socket.




A reverse sliding movement of the handle


208


toward the end wall


28


is used to allow separation of the handle


208


from the cover


10


.




In

FIG. 12

, a handle


220


has a shape similar to the handle


208


shown in

FIG. 11

in that it includes a bar-shaped member


222


with an elongated, slot-like aperture


224


which forms a finger grip on one side of the bar-shaped member


222


. A stem


226


extends from the bar member


222


and includes a pair of oppositely extending apertures, each in the form of oppositely directed key-hole slots


228


and


230


.




The handle receiver, in this aspect of the invention, is in the form of two projections


232


and


234


, each having a constant diameter shank


236


which terminates in an enlarged head


238


.




In operation, the handle


220


is angled relative to the cover


10


until the enlarged head


238


of each projection


232


and


234


slides through the enlarged end portion of each of the slots


228


and


230


. The handle is then rotated relative to the projections


232


and


234


to move the shanks


236


of each projection


232


and


234


into the smaller diameter end portion of each key-hole slot


228


and


230


in order to lock the handle


220


to the cover.




An opposite directed rotational movement followed by a separation of the handle


220


from the cover


10


is used to remove the handle


220


from the cover


10


.




Referring now to

FIGS. 13 and 14

, there are depicted two additional aspects of the present invention which utilize rotation of the handle relative to the cover


10


to attach and remove the handle from the cover


10


.




In

FIG. 13

, a handle


250


includes a central grip member


252


having two side legs


254


and


256


projecting angularly from opposite ends. Each side leg


254


and


256


has an inward extending projection or flange


258


and


260


, respectively, carried at an outer end.




The handle receiver includes a pair of diametrically opposed recesses


262


and


264


, each identically constructed and extending from an open end


266


in the end wall


28


into the sidewall


12


. Each recess


262


and


264


has an L-shaped configuration formed of a first portion


268


extending longitudinally from the end


266


to the elongated, angularly disposed inner slot portion


270


extending circumferentially about the sidewall


12


.




In operation, the handle


250


is advanced toward the end wall


14


of the cover


10


until the projections


258


and


260


pass through the open end


266


in the first end portion


268


of each of the recesses


262


and


264


in the cover


10


. The handle


250


is inserted into the recesses


262


and


264


until the projections


258


and


260


are disposed at one end of the elongated inner portion


270


of each of the recesses


262


and


264


. The handle


250


is then rotated in a counterclockwise direction, in the orientation shown in

FIG. 13

, by example only, causing the projections


258


and


260


to slide along the inner slot portion


270


of each of the recesses


262


and


264


until the projections


258


and


260


abut the inner end of each recess


262


and


264


. This represents the locked, mounting position of the handle


250


on the cover


10


. The user may then exert an outward directed force to remove the cover


10


and the attached meter from a meter socket or meter socket adapter. A reverse rotational movement followed by an outward directed pulling movement is used to remove the handle


250


from the cover


10


.




Finally, in the aspect of the present invention shown in

FIG. 14

, a handle


280


includes a central grip member


282


and two angularly extending side legs


284


and


286


. External threads


288


and


290


are formed on the ends of each of the side legs


284


and


286


.




The handle receiver in this aspect of the invention includes a pair of recesses


292


and


294


which extend from an open end


296


in the end wall


28


to an angularly disposed, elongated, circumferentially extending slot portion


298


. Internal threads


300


are formed along at least one side of the slot


298


in each recess


292


and


294


for threaded engagement with the threads


288


and


290


on the handle


280


.




In mounting the handle


280


on the cover


10


, the handle


280


is advanced toward the end wall


14


of the cover


10


until the ends of the side legs


284


and


286


pass through the open end


296


of each recess


292


and


294


. The handle


280


is further inserted into each recess


292


and


294


until the threads


288


and


290


mesh with the threads


300


in each slot


298


. The handle


280


is then rotated, such as in a clockwise direction in the orientation shown in

FIG. 14

, until the side legs


284


and


286


of the handle


280


are disposed at the inner ends of each of the slots


300


. This represents the locked, mounting position of the handle


280


on the cover


10


. The user can then exert an outward pulling force on the handle


280


to remove the cover


10


and the attached meter from a meter socket or meter socket adapter.




A reverse rotation movement enables the handle


280


to be unthreaded from the threads


300


in the recesses


292


and


294


, followed by an outward directed pulling movement to separate the handle


280


from the cover


10


.




In summary, there has been disclosed a removably attachable handle for a watthour meter cover removably attachable handles which facilitates removal and, in certain aspects, insertion of a watthour meter from and to a watthour meter socket adapter or meter socket adapter/extender. The handle has complimentary shaped receiver engagement members which engage complimentary formed receivers formed on or carried on the watthour meter cover for removable attachment of the handle to the cover. This arrangement enables a handle to be attached to a meter cover only when needed to remove and, in certain aspects, insert a meter from and to a watthour meter socket or socket adapter/extender. This also enables a single handle to be used with many watthour meter covers. Further, the handle receivers formed or carried on the cover do not interfere with the operation of the watthour meter or cover.



Claims
  • 1. A handle apparatus for a watthour meter having a cover, the handle apparatus comprising:a handle receiver carried on the cover; and a handle releasably attachable to the handle receiver, the handle receiver and the handle having complementary engaging portions to effect releasable slide together fixed engagement.
  • 2. The handle apparatus of claim 1 wherein:the handle receiver is integrally formed as a one piece member of the cover.
  • 3. The handle apparatus of claim 1 wherein:the handle receiver is fixedly mounted on the cover.
  • 4. The handle apparatus of claim 1 wherein:the handle receiver is a recess formed in the cover, the sidewalls of the recess tapering from a larger width inner portion to a smaller width outer end portion; and the handle has a complimentary shaped wedge portion to the recess for releasable engagement in the recess in an interference fit.
  • 5. The handle apparatus of claim 1 wherein:the handle receiver defines a recess in the cover, a projection extending from the recess; and the handle includes a mounting portion complementarity engagable with the recess, an aperture carried in the mounting portion releasably engagable with the projection.
  • 6. The handle apparatus of claim 1 wherein:the handle receiver defines a recess in the cover, a projection extending from the recess and the handle; and the handle includes a mounting portion complementarity engagable with the recess, an aperture formed in the other of the mounting portion of the handle and the recess.
  • 7. The handle apparatus of claim 6 wherein the handle comprises:a center finger pivotally attached to a grip end portion; and side fingers spaced from the center finger and slidably engagable in the recess in the cover.
  • 8. The handle apparatus of claim 1 wherein:the handle receiver includes an apertured flange projecting from the cover; the handle includes a pair of side legs, each terminating in at least one bendable arm; and a hook formed on the end of each arm releasably engagable with the flange after the arm has been inserted through the aperture in the flange.
  • 9. The handle apparatus of claim 8 wherein:the handle receiver includes two apertured flanges; and the handle includes two arms, each having at least one hook on an end thereof.
  • 10. The handle apparatus of claim 1 wherein:the handle receiver includes a projection extending from opposite sides of the body; and the handle includes a grip having side legs, an aperture formed in each side leg releasably engagable with one of the projections to releasably attach the handle to the cover.
  • 11. The handle apparatus of claim 10 wherein:the at least one projection of the receiver comprises two longitudinally aligned projections disposed in pairs on opposite sides of the cover; and the at least one aperture in each side leg of the handle includes two apertures in each side leg.
  • 12. The handle apparatus of claim 1 further comprising:the handle receiver including at least one projection on the cover; and the handle includes at least one aperture releasably engagable with the projection to releasably attach the handle to the cover.
  • 13. The handle apparatus of claim 12 wherein:the at least one aperture on the handle comprises a keyhole shaped slot having a first narrow width end portion and a contiguous larger width second end portion; and the at least one projection having a first narrow width portion engagable with the first end portion of the slot and a second width portion engagable only with the second end portion of the slot.
  • 14. The handle apparatus of claim 1 wherein:the cover defining a body with a longitudinal axis extending from an end; the handle receiver includes two aligned projections on the cover; and the handle includes two aligned apertures, each releasably engagable with one of the projections to releasably attach the handle to the cover.
  • 15. The handle apparatus of claim 14 wherein:the aligned projections are disposed parallel to the longitudinal axis of the cover.
  • 16. The handle apparatus of claim 1 wherein:the aligned projections extend at an angle to the longitudinal axis of the cover.
  • 17. The handle apparatus of claim 1 further comprising:the handle receiver including at least one projection carried on the end wall of the cover; the handle including a wall having at least one aperture engagable with the at least one projection to releasably attache the handle to the end wall of the cover; and at least one hand grip carried on the wall.
  • 18. The handle apparatus of claim 1 further comprising:the handle receiver including projections formed on opposing portions of the cover; and the handle including a flexible strap having apertures at opposed ends releasably engagable with the projections to releasably attach the handle to the cover.
  • 19. The handle apparatus of claim 1 further comprising:the handle receiver including opposed recesses carried in the cover; the handle includes a central grip member and a pair of side legs extending therefrom, each side leg carrying a projection releasably insertable into the recess to releasably attach the handle to the cover.
  • 20. The handle apparatus of claim 19 further comprising:a tension arm carried on each side leg and resiliently biased into engagement with the end wall of the cover when the projection on the side leg is disposed in the recess in the cover.
  • 21. The handle apparatus of claim 1 further comprising:the handle receiver including recesses formed on opposed portions of the cover, each recess having an inner end angularly extending from the opposed end of the recess; and the handle includes a projection engagable with the recess and rotatable into the recess to releasably attach the handle to the cover.
  • 22. The handle apparatus of claim 1 further comprising:the handle receiver including threads carried on the cover; and the handle including mating threads releasably engagable with the threads on the body to releasably attach the handle to the cover.
  • 23. The handle apparatus of claim 22 further comprising:the handle receiver including opposed thread portions on the cover; and the handle includes a pair of ends, each having a threaded portion releasably engagable with one of the threaded portions in the cover.
  • 24. The handle apparatus of claim 1 further comprising:the handle receiver and the handle forming cooperating complimentary snap fit connections to releasably attach the handle to the cover.
  • 25. The handle apparatus of claim 1 wherein:the complimentary engaging portions releasably attach the handle to the cover in a twist lock connection.
  • 26. The handle apparatus of claim 1 further comprising:the handle receiver and the handle having complimentary threaded portions to releasably attach the handle to the cover in a threaded connection.
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