Auxiliary equipment enclosure unit for watthour meter sockets

• US 4,314,738 A
• Filed: 03/07/1980
• Issued: 02/09/1982
• Est. Priority Date: 03/07/1980
• Status: Expired due to Term

• Current Assignee: ABB Power T&D Limited (ABB Limited)
• Original Assignee: Westinghouse Electric Company LLC (Brookfield Asset Management Incorporated)
• Inventors: Davis, Steven B., Bedel, Denis E., Coyle, Forrest E.
• Primary Examiner(s): DESMOND, EUGENE
• Application Number:
  US06/128,222
• Time in Patent Office: 704 Days
• Field of Search: 339/155 R, 339/156 R, 339/31 B, 339/192 RL, 339/198 M, 339/129, 339/132 R, 339/132 B, 324/156, 324/157, 361/369, 361/370, 361/371, 361/372, 361/374
• US Class Current: 439/517
• CPC Class Codes: H02B 1/03 for energy meters

Abstract

A detachable enclosure unit for use at standard watthour meter sockets includes a central housing for carrying auxiliary equipment and a rear adaptive socket attachment assembly having a mounting extension and a retainer ring for adaptive mounting to both ring and ringless sockets. The retainer ring provides a circularly extending and radially disposed surface equally accommodating the different types of meter sockets.

Claims

1. An auxiliary equipment enclosure unit mountable at watthour meter sockets each having one of at least two detachable meter mounting arrangements, said enclosure unit comprising:

a hollow body defining a housing portion adapted to receive separate equipment devices therein; and

an adaptive socket attachment assembly including a mounting extension extending axially from the rear end of said housing portion along an outer periphery circumscribing an area less than the vertical cross sectional area of said housing portion with said mounting extension including a recessed portion having opposed radial sides disposed in said mounting extension, and said adaptive socket attachment assembly further including a removable retainer means receivable over said extension and rotatably, positionable into said recessed portion so as to be axially confined by said radial sides and upon said enclosure unit being mounted to either one of the at least two meter mounting arrangements of the meter sockets, said retainer member is maintained in a predetermined radially overlapping relationship therewith for retaining said enclosure unit at the meter socket.

2. The auxiliary equipment enclosure unit as claimed in claim 1 wherein said retainer means includes a substantially flat circular ring.

3. The auxiliary equipment enclosure unit as claimed in claim 1 wherein said retainer means has a substantially L-shaped cross section and a circular ring shape so as to define a radial part receivable by said recessed portion and an axial part defining a rim having a predetermined diameter.

4. The auxiliary equipment enclosure unit as claimed in claim 2 wherein said retainer means includes plural arcuately spaced locking tabs extending radially inward.

5. The auxiliary equipment enclosure unit as claimed in claim 3 wherein said retainer means is made of a sheet metal material and includes plural locking tabs extending radially inward.

6. The auxiliary equipment enclosure unit as claimed in claim 2 wherein said recessed portion includes a continuous groove extending radially into said outer periphery of said mounting extension.

7. The auxiliary equipment enclosure unit as claimed in claim 4 wherein said mounting extension portion includes arcuately spaced projections defining the rear sides of plural grooves defining said recessed portion wherein said plural locking tabs are axially receivable by said mounting extension between said projections and thereafter rotatably receivable by said plural grooves.

8. The auxiliary equipment enclosure unit as claimed in claim 4 wherein said mounting extension includes a helical groove defining said opposed radial sides of said recessed portion and further wherein said retainer means includes said locking tabs each having an angular orientation for being receivable by said helical groove.

9. An auxiliary equipment enclosure unit for interposed mounting between a detachable watthour meter and a meter socket having jaw terminals for receiving blade terminals of said meter, said enclosure unit comprising:

a central housing having an interior adapted to receive and enclose auxiliary equipment devices therein;

a front end part extending from one end of said housing and including meter attachment means for detachably receiving a watthour meter;

an adaptive socket attachment assembly extendible from the other end of said housing and having a mounting extension for extending rearwardly from said housing and further having a retainer ring carried by said mounting extension so as to extend radially outward therefrom in a substantially circular flange configuration and so as to be separable from the other housing end;

plural blade terminal extensions each including a conductive bar extending through said housing and beyond said mounting extension for a predetermined length, each of said extensions further having a rear contact end for insertion into a separate one of the jaw terminals, further having a forward end having two opposing sides spaced for receiving a separate one of the meter blade terminals, and still further having a rigid clamping member for fixedly clamping each of the meter blade terminals between the opposing ends of each of said plural blade terminal extensions.

10. The auxiliary equipment enclosure unit as claimed in claim 9 wherein each of said plural blade terminal extensions includes a removable part forming one of said opposing sides of said forward end thereof and wherein each of said rigid clamping members includes a screw fastener for extending through said opposing sides to effect the clamping of a meter blade terminal thereto.

11. The auxiliary equipment enclosure unit as claimed in claim 10 wherein said conductive bar has a forward end forming the other of said opposing sides of each of said terminal extensions and has a thickness less than at the center portion thereof for defining a recess for receiving a meter blade.

12. The auxiliary equipment enclosure unit as claimed in claim 11 wherein said removable part of each of said terminal extensions extends in overlapping contact relationship with the center portion of each conductive bar.

13. The auxiliary equipment enclosure unit as claimed in claim 12 wherein said removable part of each of said terminal extensions includes an internal thread portion for threadably receiving each screw fastener and further includes at least one tab for extending over an edge of the forward end of each conductive bar.

14. An auxiliary equipment enclosure unit for interposed mounting between watthour meter sockets having either of at least two detachable meter mounting arrangements and a detachable watthour meter having rear blade terminals, said enclosure unit comprising:

a housing having a front end for attachment to the detachable watthour meter and a rear end, the interior of said housing adapted to receive and enclose auxiliary equipment devices therein;

said rear end including an adaptive socket attachment assembly including a mounting extension extending from the back of said housing, said mounting extension including a recessed portion including a groove extending radially into the circumference of said mounting extension;

said adaptive socket attachment assembly further including a retainer ring having radially inward extending tab means receivable by said groove of said mounting extension so as to extend radially outward therefrom and define a rim surface having a predetermined diameter;

a plurality of blade terminal extensions including straight conductive bar members each with a forward end having opposing sides for receiving each of the meter blade terminals within overlapping contact across said opposing sides thereof; and

a plurality of threaded clamping members each rigidly attaching the opposing forward ends of each of the blade terminal extensions to the meter blade terminal received therein.

15. The auxiliary equipment enclosure unit as claimed in claim 14 wherein said front end and said rear end of said housing are separate parts removably attached to the ends of said housing.

16. The auxiliary equipment enclosure unit as claimed in claim 15 wherein said separate rear end part includes a separate base portion including slot openings for receiving said terminal extensions and integral back plate and mounting extension portions carrying said base portion and being removably mounted to said housing.

17. The auxiliary equipment enclosure unit as claimed in claim 14 wherein said mounting extension includes plural circularly arcuate projections substantially equally circumferentially spaced defining plural interrupted portions of said groove recess portion and further defining plural openings between said projections communicating with the interrupted groove portions, whereby separate ones of said tab means of said retainer ring are axially positionable through said plural openings and rotatably positionable within said plural interrupted groove portions.

18. The auxiliary equipment enclosure unit as claimed in claim 14 wherein said mounting extension includes said recessed portion being formed in a helical groove and further wherein said retainer ring has said tab means being disposed in an helical orientation for complementary mating with said helical groove of said mounting extension.

19. The auxiliary equipment enclosure unit as claimed in claim 15 wherein each of said blade terminal extensions includes a removable part forming one of said opposing sides at the forward end thereof and receiving one of the plurality of threaded clamping members.