Electrical service apparatus safety shield with wire guides

• US 20020102873A1
• Filed: 01/31/2001
• Published: 08/01/2002
• Est. Priority Date: 01/31/2001
• Status: Active Grant

• Current Assignee: E J Brooks Company
• Original Assignee: Ekstrom Industries Incorporated
• Inventors: Robinson, Darrell, Pruehs, Allen V.
• Granted Patent: US 6,478,589 B2
• Time in Patent Office: Days
• US Class Current: 439/146
• CPC Class Codes: H01R 13/44 Means for preventing access to live contacts making use of a switch actuated by engagement of counterpart H01R13/7036
• CPC Class Codes: H01R 13/6397 with means for preventing unauthorised use
• CPC Class Codes: H01R 13/703 operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling partH01R13/71 takes precedence

Abstract

A safety shield for an electrical service apparatus is in the form of an enclosure surrounding in the apparatus jaw contacts. Latch members formed on the shield releasibly engage apertures in the apparatus housing to mount the shield in the housing. The latch members are configured to fill the apertures in the housing to prevent disengagement of the shield from the housing during removal of a watthour meter from the housing. In one aspect, the shield is provided with wire wrap members for winding up lengths of excess cables and conductors extending from a watthour meter. The wire wrap members include a pair of arms arranged about the periphery of the shield or spaced flanges on opposite sides of the shield. The wire wrap members also include a flange having an end extending over an aperture in the shield which acts as a strain relief for a conductor extending through the shield. In another aspect, a light transmissive guide carried on the shield transmits light generated by a light generating source within the housing to a visible location externally of the housing.

Claims

1. An electrical service apparatus having a housing with a base wall and an annular sidewall extending from the base wall, a plurality of electrical contacts mounted on the base wall and adapted for releasibly receiving blade terminals of a watthour meter, the electrical service apparatus comprising:

an electrically insulating shield for covering the electrical contacts within the housing, the shield having apertures alignable with at least one electrical contact adapted for receiving a blade terminal of a watthour meter in engagement with the one electrical contact;

the plurality of apertures formed in the base wall of the housing;

a plurality of legs projecting from the shield; and

a latch member carried on each leg releasibly engageable with one aperture in the base wall of the housing shield to the housing, each latch member filling one aperture in the base wall of the housing to prevent disengagement of the shield from the housing during removal of a watthour meter from the electrical contacts in the housing.

2. The electrical service apparatus of claim 1 further comprising:

four apertures formed in the housing;

four legs carried on the shield, each leg carrying one latch member.

3. The electrical service apparatus of claim 1 wherein the latch member comprises:

a clip having first and second angularly disposed side portions and an edge extending from one of the side portions.

4. The electrical service apparatus of claim 1 further comprises:

wire wrap members carried on the shield for receiving wires in a wound condition.

5. The electrical service apparatus of claim 4 wherein the wire wrap members comprise at least one pair of spaced wire wrap members.

6. The electrical service apparatus of claim 5 wherein the at least one pair of wire wrap members are disposed along one sidewall of the shield.

7. The electrical service apparatus of claim 4 wherein the wire wrap members comprise two pair of spaced wire wrap members.

8. The electrical service apparatus of claim 4 wherein at least certain of the wire wrap members comprise:

a surface on the shield for receiving a wound wire.

9. The electrical service apparatus of claim 4 wherein at least certain of the wire wrap members comprise:

a first leg extending outward from the shield; and

a second leg extending angularly from one end of the first leg and terminating in a tip, the tip spaced from the shield to define an opening between the first and second legs and the shield for receiving a wire therein.

10. The electrical service apparatus of claim 9 further comprising:

the tip disposed angularly with respect to the second leg.

11. The electrical service apparatus of claim 9 wherein:

the tip is spaced from the shield by a distance less than a diameter of a wire insertable past the tip.

12. The electrical service apparatus of claim 4 wherein at least certain of the wire wrap members comprise:

two spaced flanges extending outwardly from the shield.

13. The electrical service apparatus of claim 12 wherein the two flanges are disposed intermediately on spaced sides of the shield.

14. The electrical service apparatus of claim 12 wherein at least certain of the wire wrap members comprise:

a first leg extending outward from the shield; and

a second leg extending angularly from one end of the first leg and terminating in a tip, the tip spaced from the shield to define an opening within the first and second legs and the shield for receiving a wire therein.

15. The electrical service apparatus of claim 4 wherein at least certain of the wire wrap members comprise:

an aperture formed in the socket adapter housing; and

a clip carried on the shield and having an end portion extending over the aperture, the clip adapted to receive a wire extending through the aperture in the shield in a wound state.

16. The electrical service apparatus of claim 4 wherein at least certain of the wire wrap members comprise:

first and second arms carried on the shield and spaced apart to define a slot for receiving a wire; and

the arms defining a wire winding surface.

17. The electrical service apparatus of claim 4 further comprising:

a light transmissive guide carried on the shield and having first and second ends, the first end adapted to be disposed in proximity with a light generating source in the housing to transmit light generated by the light generating source to the second end, the second end disposed to be a visible externally of the housing.

18. The electrical service apparatus of claim 17 further comprising:

an aperture formed in the sidewall of the housing;

the second end of the light transmissive guide visibly disposed through the aperture in the sidewall of the housing.

19. The electrical service apparatus of claim 17 wherein the light transmissive guide is integrally formed as a unitary, one-piece part of the shield.

20. The electrical service apparatus of claim 1 further comprising:

a light transmissive guide carried on the shield and having first and second ends, the first end adapted to be disposed in proximity with a light generating source in the housing to transmit light generated by the light generating source to the second end, the second end disposed to be visible externally of the housing.

21. The electrical service apparatus of claim 20 wherein the light transmissive guide is integrally formed as a unitary, one-piece part of the shield.

22. The electrical service apparatus of claim 20 further comprising:

an aperture formed in the sidewall of the housing of the socket adapter;

the second end of the light transmissive guide visibly disposed through the aperture in the sidewall of the housing.

23. The electrical service apparatus of claim 22 further comprising:

a seal mounted on the light transmissive guide and engaged with the sidewall of the housing for sealing the aperture in the housing.

24. The electrical service apparatus of claim 23 further comprising:

a collar formed on the light transmissive guide for biasing the seal member into sealing engagement with the sidewall of the housing.

26. The electrical service apparatus of claim 25 wherein the wire wrap members comprise at least one pair of spaced wire wrap members.

27. The electrical service apparatus of claim 26 wherein the at least one pair of wire wrap members are disposed along one sidewall of the shield.

28. The electrical service apparatus of claim 25 wherein the wire wrap members comprise two pair of spaced wire wrap members.

29. The electrical service apparatus of claim 25 wherein at least certain of the wire wrap members comprise:

a surface on the shield for receiving a wound wire.

30. The electrical service apparatus of claim 25 wherein at least certain of the wire wrap members comprise;

a first leg extending outward from the shield; and

a second leg extending angularly from one end of the first leg and terminating in a tip, the tip spaced from the shield to define an opening between the first and second legs and the shield for receiving a wire therein.

31. The electrical service apparatus of claim 30 further comprising:

the tip disposed angularly with respect to the second leg.

32. The electrical service apparatus of claim 31 wherein:

the tip is spaced from the shield by a distance less than a diameter of a wire insertable past the tip.

33. The electrical service apparatus of claim 25 wherein at least certain of the wire wrap members comprise:

two spaced flanges extending outwardly from the shield.

34. The electrical service apparatus of claim 33 wherein the pair of flanges are disposed intermediately on spaced sides of the shield.

35. The electrical service apparatus of claim 33 wherein at least certain of the wire wrap members comprise:

a first leg extending outward from the shield; and

a second leg extending angularly from one end of the first leg and terminating in a tip, the tip spaced from the shield to define an opening within the first and second legs and the shield for receiving a wire therein.

36. The electrical service apparatus of claim 25 wherein at least certain of the wire wrap members comprises:

an aperture formed in the socket adapter housing; and

a clip carried on the shield and having an end portion extending over the aperture, the clip adapted to receive a wire extending through the aperture in the shield in a wound state.

37. The electrical service apparatus of claim 25 wherein at least certain of the wire wrap members comprise:

first and second arms carried on the shield and spaced apart to define a slot for receiving a wire;

the arms defining a wire winding surface.

39. The electrical service apparatus of claim 38 further comprising:

a light transmissive guide carried on the shield and having first and second ends, the first end adapted to be disposed in proximity with a light generating source in the housing to transmit light generated by the light generating source to the second end, the second end disposed to be visible externally of the housing.

40. The electrical service apparatus of claim 39 wherein the light transmissive guide is integrally formed as a unitary, one-piece part of the shield.

41. The electrical service apparatus of claim 38 further comprising:

an aperture formed in the sidewall of the housing; and

the second end of the light transmissive guide visibly disposed through the aperture in the sidewall of the housing.

42. The electrical service apparatus of claim 41 further comprising:

a seal mounted on the light transmissive guide and engaged with the sidewall of the housing for sealing the aperture in the housing.

43. The electrical service apparatus of claim 42 further comprising:

a collar formed on the light transmissive guide for biasing the seal member into sealing engagement with the sidewall of the housing.

25. An electrical service apparatus having a housing with a base wall and an annular sidewall extending from the base wall, a plurality of electrical contacts mounted on the base wall and adapted for releasibly receiving blade terminals of a watthour meter, the electrical service apparatus comprising:

an electrically insulating shield for covering the electrical contacts within the housing of the watthour meter socket adapter, the shield having apertures alignable with at least one electrical contact adapted for receiving a blade terminal of a watthour meter into engagement with the one electrical contact; and

wire wrap members carried on the shield for receiving wires in a wound condition.

38. An electrical service apparatus having a housing with a base wall and an annular sidewall extending from the base wall, a plurality of electrical contacts mounted on the base wall, the electrical service apparatus comprising:

an electrically insulating shield for covering the electrical contacts within the housing, the shield having apertures alignable with at least one electrical contact adapted for receiving a blade terminal of a watthour meter in engagement with the one electrical contact; and

a light transmissive guide carried on the shield and having first and second ends, the first end adapted to be disposed in proximity with a light generating source in the housing to transmit light generated by the light generating source to the second end, the second end disposed to be visible externally of the housing.

44. An electrically insulating safety shield for mounting an electrical service apparatus having a housing with a base wall and an annular sidewall extending from the base wall, and a plurality electrical contacts mounted on the base wall and adapted for releasably receiving the blade terminals or a watthour meter, the safety shield comprising:

an electrically insulating body having a top wall and a depending sidewall;

a plurality of apertures formed in the top wall of the body alignable with at least one electrical contact in a housing, the apertures adapted for receiving a blade terminal of a watthour meter therethrough into engagement with the one electrical contact in the housing of the socket adapter; and

wire wrap members carried on the body of the safety shield for receiving wires in a wound condition.

45. The safety shield of claim 44 wherein the wire wrap members comprise at least one pair of spaced wire wrap members.

46. The safety shield of claim 45 wherein at least one pair of wire wrap members are disposed along one sidewall of the shield.

47. The safety shield of claim 44 wherein the wire wrap members comprise two pair of spaced wire wrap members.

48. The safety shield of claim 44 wherein at least certain of the wire wrap members comprise:

a surface on the shield for receiving a wound wire.

49. The safety shield of claim 44 wherein at least certain of the wire wrap members comprise:

a first leg extending outward from the shield; and

a second leg extending angularly from one end of the first leg and terminating in a tip, the tip spaced from the shield to define an opening between the first and second legs and the shield for receiving a wire therein.

50. The safety shield of claim 49 further comprising:

the tip end disposed angularly with respect to the second leg.

51. The safety shield of claim 49 wherein:

the tip is spaced from the shield by a distance less than a diameter of a wire insertable past the tip.

52. The safety shield of claim 44 wherein at least certain of the wire wrap members comprise:

two spaced flanges extending outwardly from the shield.

53. The safety shield of claim 52 wherein the pair of flanges are disposed intermediate on spaced sides of the shield.

54. The safety shield of claim 52 wherein at least certain of the wire wrap members comprise:

a first leg extending outward from the shield; and

a second leg extending angularly from one end of the first leg and terminating in a tip, the tip spaced from the shield to define an opening within the first and second legs and the shield for receiving a wire therein.

55. The safety shield of claim 44 wherein at least certain of the wire wrap members comprise:

an aperture formed in the socket adapter housing; and

a clip carried on the shield and having an end portion extending over the aperture, the clip the adapted to receive a wire extending through the aperture in the shield in a wound state.

56. The safety shield of claim 44 wherein at least certain of the wire wrap members comprise:

first and second arms carried on the shield and spaced apart to define a slot for receiving a wire; and

the arms defining a wire winding surface.

58. The safety shield of claim 57 wherein the light transmissive guide is integrally formed as a unitary, one-piece part of the shield.

59. The safety shield of claim 57 further comprising:

an aperture formed in the sidewall of the housing;

the second end of the light transmissive guide visibly disposed through the aperture in the sidewall of the housing.

60. The electrical service apparatus of claim 59 further comprising:

a seal mounted on the light transmissive guide and engaged with the sidewall of the housing for sealing the aperture in the housing.

61. The electrical service apparatus of claim 60 further comprising:

a collar formed on the light transmissive guide for biasing the seal member into sealing engagement with the sidewall of the housing.

57. An electrically insulating safety shield for mounting an electrical service apparatus having a housing with a base wall and an annular sidewall extending from the base wall, and a plurality electrical contacts mounted on the base wall and adapted for releasibly receiving the blade terminals of a watthour meter, the safety shield comprising:

an electrically insulating body having a top wall and a depending sidewall;

a plurality of apertures formed in the top wall of the body alignable with at least one electrical contact in a housing, the apertures adapted for receiving a blade terminal of a watthour meter therethrough into engagement with the one electrical contact in the housing; and

a light transmissive guide carried on the body of the safety shield and having first and second ends, the first end adapted to be disposed in proximity with a light-generating source in the housing to transmit light generated by the light-generating source to the second end of the light transmissive guide, the second end disposed to be visible externally of the housing when the safety shield is mounted in the housing.