Electrical connector assembly and method for connecting the same

• US 4,857,021 A
• Filed: 10/17/1988
• Issued: 08/15/1989
• Est. Priority Date: 10/17/1988
• Status: Expired due to Term

• Current Assignee: Cooper Power Systems Incorporated (Eaton Corporation PLC.)
• Original Assignee: Cooper Power Systems Incorporated (Eaton Corporation PLC.)
• Inventors: Roscizewski, Paul M., DeMeyer, Roy W., Sankey, Edward L., Boliver, Vincent J.
• Primary Examiner(s): Paumen, Gary F.
• Application Number:
  US07/258,619
• Time in Patent Office: 302 Days
• Field of Search: 439/181, 439/183-187, 439/278, 439/279, 439/281, 439/282, 439/921, 439/801, 439/813, 403/21, 403/22, 403/118
• US Class Current: 439/801
• CPC Class Codes: H01R 13/53 Bases or cases for heavy duty; Bases or cases for high voltage with means for preventing corona or arcing
• CPC Class Codes: H01R 4/30 utilising a screw or nut clamping member H01R4/50 takes precedence; utilising a clamping member acted on by screw or nut H01R4/38; for coaxial cables H01R9/0521
• CPC Class Codes: H01R 4/56 one conductor screwing into another
• CPC Class Codes: Y10S 439/921 Transformer bushing type or high voltage underground connector

Abstract

An assembly comprising a tap plug having therein an axially fixed nut and including an externally threaded portion threaded into a cable connector lug, a bushing having therein an internally threaded bore, and a stud including an externally threaded first end threaded into the nut, and an externally threaded second end threaded into the bushing bore.

Claims

1. An electrical device adapted to be connected to a conductive member, said device comprising

a housing,

a first member which is rotatably supported by said housing, which is fixed against movement in both directions axially of said housing, and which includes means for threadedly engaging the conductive member, and

a second member which is supported by said housing and which includes an externally threaded portion extending from said housing and having therein a bore centered on an axis,

said first member being supported by said second member for rotation about said axis and being fixed against movement axially of said second member.

2. A device as set forth in claim 1 wherein said bore has therein spaced-apart stops, and wherein said first member is located in said bore and between said stops.

3. A device as set forth in claim 1 wherein said first member is a nut having therein an internally threaded bore adapted to be threadedly connected to the conductive member.

4. A device as set forth in claim 3 wherein the conductive member has an externally threaded stud extending therefrom, and wherein said nut is adapted to engage the stud.

5. A device as set forth in claim 1 wherein said housing has therein an electrically conductive surface, and wherein said device further comprises a contact assembly located in contact with and movable relative to said conductive surface.

6. A method for connecting a first member to a second insulated, conductive member, said method comprising the steps of

providing a connector having therethrough an internally threaded first bore, a first member having therein an internally threaded second bore, a second insulated, conductive member including a housing, an externally threaded portion extending from said housing and having therein a third bore, and a nut which includes an internally threaded fourth bore aligned with said third bore and which is supported by said housing and is rotatable relative to said housing, and a stud having externally threaded first and second ends,

threading said first end of said stud into said second bore,

threading said externally threaded portion of said second member into said first bore, and

threading said second end of said stud into said fourth bore.

7. A method as set forth in claim 6 wherein said first and second threading steps are performed before said third threading step.

8. A method as set forth in claim 6 and further comprising the steps of providing a coupling member including a first portion which is coaxial with said externally threaded portion of said second member, which is externally threaded, and which is adapted to be threaded into said first bore, and also including a second portion housed in said third bore, and frangible means for preventing rotation of said coupling member relative to said second member, and wherein said step of threading said externally threaded portion of said second member into said first bore includes the steps of threading said first portion of said coupling member into said first bore until said externally threaded portion of said second member is aligned with said first bore, rotating said coupling member until said frangible means breaks to thread said externally threaded portion of said second member into said first bore, and removing said coupling member from said externally threaded portion of said second member and from said connector.

9. An electrical connector assembly comprising

a first insulated, conductive member adpated to be connected to a connector having therein an internally threaded first bore, said first member including an externally threaded portion which is adapted to be threaded into the first bore and which has therein a second bore, and

a coupling member including a first portion which is coaxial with said externally threaded portion of said first member, which is externally threaded and which is adapted to be threaded into the first bore, and including a second portion housed in said second bore.

10. An assembly as set forth in claim 9 and further comprising frangible means for preventing rotation of said coupling member relative to said first member.

11. An assembly as set forth in claim 10 wherein said frangible means includes a shear pin extending between said second portion of said coupling member and said externally threaded portion of said first member.

12. An assembly as set forth in claim 10 wherein threading of said externally threaded portion into the first bore creates a torque between said first member and the connector, and wherein said frangible means breaks when said coupling member is rotated and the above-mentioned torque reaches a predetermined level.

13. An assembly as set forth in claim 9 wherein said coupling member includes a socket adapted to receive a tool operable for rotating said coupling member.

14. A method for connecting an insulated, conductive member to a connector, said method comprising the steps of

providing a connector having therein an internally threaded first bore, a first insulated, conductive member including an externally threaded portion which is adapted to be threaded into said first bore and which has therein a second bore, and a coupling member including a first portion which is coaxial with said externally threaded portion of said first member, which is externally threaded, and which is adapted to be threaded into said first bore, and a second portion of said coupling member housed in said second bore,

threading said first portion of said coupling member into said first bore until said externally threaded portion of said first member is aligned with said first bore, and

rotating said coupling member to thread said externally threaded portion of said first member into said first bore.

15. A method as set forth in claim 14 and further comprising the steps of providing frangible means for preventing rotation of said coupling member relative to said first member, rotating said coupling member until said frangible means breaks, and removing said coupling member from said externally threaded portion of said first member and from said connector.

16. An electrical connector assembly comprising

a connector having therethrough an internally threaded first bore,

a first member, and

a second insulated, conductive member including a housing, an externally threaded portion of said second member threaded into said first bore, and a third member which is supported by said housing and is rotatable relative to said housing, which is fixed against movement in both directions axially of said housing, and which includes means for threadedly engaging said first member.

17. An assembly as set forth in claim 16 wherein said first member has therein an internally threaded second bore, wherein said third member is a nut, wherein said means includes, in said nut, an internally threaded third bore, and wherein said assembly further comprises a stud having a first end threaded into said second bore and a second end threaded into said third bore.

18. An electrical device adapted to be connected to a conductive member, said device comprising

a housing, and

a nut which is supported by said housing and is rotatable relative to said housing, which is fixed against movement in both directions axially of said housing, and which has therein an internally threaded bore adapted to be threadedly connected to the conductive member.

19. A device as set forth in claim 18 and further comprising a second member which is supported by said housing and which includes an externally threaded portion extending from said housing and having therein a bore centered on an axis, and wherein said nut is supported by said second member for rotation about said axis and is fixed against movement axially of said second member.

20. A device as set forth in claim 19 wherein said bore has therein spaced-apart stops, and wherein said nut is located in said bore and between said stops.

21. A device as set forth in claim 18 wherein the conductive member has an externally threaded stud extending therefrom, and wherein said nut is adapted to engage the stud.

22. A device as set forth in claim 18 wherein said housing has therein an electrically conductive surface, and wherein said device further comprises a contact assembly located in contact with and movable relative to said conductive surface.

23. An electrical apparatus comprising a tap plug adapted to be connected to a conductive member, said tap plug including a housing, and a nut which is supported by said housing and is rotatable relative to said housing, which is fixed against movement in both directions axially of said housing, and which has therein an internally threaded bore adapted to be threadedly connected to the conductive member.

24. An electrical apparatus as set forth in claim 23 and further comprising a bushing having therein an internally threaded bore, and said apparatus also comprising a stud including an externally threaded first end adapted to be threaded into said nut bore, and an externally threaded second end adapted to be threaded into said bushing bore.

25. An electrical apparatus as set forth in claim 24 and further comprising a cable connector including a housing defining opposed, coaxial recesses, and a lug extending into said cable connector housing between said recesses, wherein said bushing is housed in one of said recesses, wherein said tap plug is housed in the other of said recesses, and wherein said stud extends through said lug.

26. An electrical apparatus as set forth in claim 25 wherein said lug has therethrough an internally threaded bore which is coaxial with said recesses and through which said stud extends, and wherein said tap plug also includes an externally threaded portion threaded into said lug bore.