IP Library › Granted Patent US 12671190
Granted Patent B2
US 12671190 · App. 18/122,593 · Granted Jun 30, 2026

Electrical wiring devices with screwless wire terminals

Inventors: Thomas L. Scanzillo (Monroe, CT); Denny Lo (Bethlehem, CT); Edward Bazayev (Kew Gardens, NY)
Assignee: Hubbell Incorporated
H01R4/4833H01R4/4816H01R9/223H01R4/4852
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Quick Facts
Patent No.
US 12671190
App. No.
18/122,593
Granted
Jun 30, 2026
Kind
B2
Abstract

Electrical wiring devices that incorporate screwless wire terminal connections are described. The electrical wiring devices include for example, single and duplex blade-type electrical receptacles, blade-type locking electrical receptacles, single or multi-pole electrical switches, combination switches and blade-type receptacles, blade-type plugs for electrical cords, blade-type connectors for electrical cords, male and female inlet connectors and pin-in-sleeve connectors. The electrical wiring devices include a plurality of contact assemblies and a pushbutton type activating member that interacts with the contact assemblies.

Claims (58)

1 . An electrical wiring device comprising:

a housing having at least one cavity within an interior of the housing, at least one wire receiving opening and at least one activating member opening; and

at least one contact assembly positioned at least partially in the at least one cavity such that the at least one contact assembly is accessible from the at least one wire receiving opening and the at least one activating member opening;

wherein the at least one contact assembly includes:

a wire terminal having a clamp brace and a force applying member secured to the clamp brace, the force applying member being movable between a first position where a wire can be secured between the force applying member and the clamp brace and a second position where the wire can be inserted through the at least one wire receiving opening and between the force applying member and the clamp brace; and

an activating member having a distal end, a proximal end and a biasing member coupled to the distal end, wherein the distal end is at least partially positioned in the at least one cavity such that a portion of the activating member is at least partially operatively associated with the force applying member and the proximal end extends at least partially through the at least one activating member opening, the activating member being interactive with the force applying member such that when the activating member is depressed the activating member moves in a first direction applying a force or mechanical load to the force applying member causing the force applying member to move from the first position to the second position, and when the activating member is released the biasing member moves the activating member in a second direction removing the force or mechanical load from the force applying member so that the force applying member moves from the second position to the first position.

2 . The electrical wiring device according to claim 1 , wherein the biasing member comprises a spring.

3 . The electrical wiring device according to claim 1 , wherein the portion of the activating member at least partially operatively associated with the force applying member includes a camming member.

4 . The electrical wiring device according to claim 3 , wherein the camming member has a camming surface configured to contact at least a portion of the force applying member.

5 . The electrical wiring device according to claim 4 , wherein the camming surface is substantially flat.

6 . The electrical wiring device according to claim 1 , wherein the force applying member is a clamping member.

7 . The electrical wiring device according to claim 6 , wherein the clamping member is a clamp spring.

8 . The electrical wiring device according to claim 1 , wherein when in the first position the wire is secured between the force applying member and the clamp brace by clamping the wire between the force applying member and the clamp brace.

9 . The electrical wiring device according to claim 1 , wherein the activating member remains in the first position or the second position until manually moved.

10 . The electrical wiring device according to claim 1 , wherein the movement of the activating member in the second direction is opposite the movement of the activating member in the first direction.

11 . The electrical wiring device according to claim 1 , wherein the movement of the activating member in the first direction and the second direction is parallel to the clamp brace.

12 . The electrical wiring device according to claim 1 , wherein the movement of the activating member in the first direction and the second direction is linear.

13 . The electrical wiring device according to claim 1 , wherein movement of the activating member in the first and second directions is relative to the force applying member or the clamp brace.

14 . The electrical wiring device according to claim 1 , wherein movement of the activating member in the first direction is outward relative to the housing and wherein movement of the activating member in the second direction is inward relative to the housing.

15 . The electrical wiring device according to claim 1 , wherein when in the first position the force applying member can clamp the wire with a force that is substantially perpendicular to a longitudinal axis of the wire.

16 . An electrical wiring device comprising:

a housing having a plurality of cavities within an interior of the housing, a plurality of wire receiving openings and a plurality of activating member openings;

a plurality of contact assemblies, wherein one of the plurality of contact assemblies is positioned at least partially in one of the plurality of cavities such that the one of the plurality of contact assemblies is accessible from a respective one of the plurality of wire receiving openings and a respective one of the plurality of activating member; and

wherein each of the plurality of the contact assemblies includes:

a wire terminal having a clamp brace and a force applying member secured to the clamp brace, the force applying member being movable between a first position where a wire can be secured between the force applying member and the clamp brace and a second position where the wire can be inserted through the one of the plurality of wire receiving openings and between the force applying member and the clamp brace; and

an activating member having a distal end, a proximal end and a biasing member coupled to the distal end, wherein the distal end is at least partially positioned in the one of the plurality of cavities such that a portion of the activating member is at least partially operatively associated with the force applying member and the proximal end extends at least partially through the one of the plurality of activating member openings, the activating member being interactive with the force applying member such that when the activating member is depressed the activating member moves in a first direction applying a force or mechanical load to the force applying member causing the force applying member to move from the first position to the second position, and when the activating member is released the biasing member moves the activating member in a second direction removing the force or mechanical load from the force applying member so that the force applying member moves from the second position to the first position.

17 . The electrical wiring device according to claim 16 , wherein the biasing member comprises a spring.

18 . The electrical wiring device according to claim 16 , wherein the portion of the activating member at least partially operatively associated with the force applying member includes a camming member.

19 . The electrical wiring device according to claim 18 , wherein the camming member has a camming surface configured to contact at least a portion of the force applying member.

20 . The electrical wiring device according to claim 19 , wherein the camming surface is substantially flat.

21 . The electrical wiring device according to claim 16 , wherein the force applying member is a clamping member.

22 . The electrical wiring device according to claim 16 , wherein the clamping member is a clamp spring.

23 . The electrical wiring device according to claim 16 , wherein when in the first position the wire is secured between the force applying member and the clamp brace by clamping the wire between the force applying member and the clamp brace.

24 . The electrical wiring device according to claim 16 , wherein the activating member remains in the first position or the second position until manually moved.

25 . The electrical wiring device according to claim 16 , wherein the movement of the activating member in the second direction is opposite the movement of the activating member in the first direction.

26 . The electrical wiring device according to claim 16 , wherein the movement of the activating member in the first direction and the second direction is parallel to the clamp brace.

27 . The electrical wiring device according to claim 16 , wherein the movement of the activating member in the first direction and the second direction is linear.

28 . The electrical wiring device according to claim 16 , wherein movement of the activating member in the first and second directions is relative to the force applying member or the clamp brace.

29 . The electrical wiring device according to claim 16 , wherein movement of the activating member in the first direction is outward relative to the housing and wherein movement of the activating member in the second direction is inward relative to the housing.

30 . The electrical wiring device according to claim 16 , wherein when in the first position the force applying member can clamp the wire with a force that is substantially perpendicular to a longitudinal axis of the wire.

31 . An electrical wiring device comprising:

a housing having at least one cavity within an interior of the housing, at least one wire receiving opening and at least one activating member opening; and

at least one contact assembly positioned at least partially in the at least one cavity such that the at least one contact assembly is accessible from the at least one wire receiving opening and the at least one activating member opening;

wherein the at least one contact assembly includes:

a wire terminal having a clamp brace and a force applying member secured to the clamp brace, the force applying member being movable between a first position where a wire can be secured between the force applying member and the clamp brace and a second position where the wire can be inserted through the at least one wire receiving opening and between the force applying member and the clamp brace; and

an activating member having a first face including a camming surface, a distal end, a biasing member coupled to the distal end, and a proximal end, wherein the distal end is at least partially positioned in the at least one cavity such that the camming surface of the first face is at least partially operatively associated with the force applying member and the proximal end extends at least partially through the at least one activating member opening, the camming surface of the activating member being interactive with the force applying member such that when the activating member is depressed the activating member moves in a first direction applying a force or mechanical load to the force applying member causing the force applying member to move from the first position to the second position, and when the activating member is released the biasing member moves the activating member in a second direction removing the force or mechanical load from the force applying member so that the force applying member moves from the second position to the first position.

32 . The electrical wiring device according to claim 31 , wherein the biasing member comprises a spring.

33 . The electrical wiring device according to claim 31 , wherein the camming surface is substantially flat.

34 . The electrical wiring device according to claim 31 , wherein the force applying member is a clamping member.

35 . The electrical wiring device according to claim 34 , wherein the clamping member is a clamp spring.

36 . The electrical wiring device according to claim 31 , wherein when in the first position the wire is secured between the force applying member and the clamp brace by clamping the wire between the force applying member and the clamp brace.

37 . The electrical wiring device according to claim 31 , wherein the activating member remains in the first position or the second position until manually moved.

38 . The electrical wiring device according to claim 31 , wherein the movement of the activating member in the second direction is opposite the movement of the activating member in the first direction.

39 . The electrical wiring device according to claim 31 , wherein the movement of the activating member in the first direction and the second direction is parallel to the clamp brace.

40 . The electrical wiring device according to claim 31 , wherein the movement of the activating member in the first direction and the second direction is linear.

41 . The electrical wiring device according to claim 31 , wherein movement of the activating member in the first and second directions is relative to the force applying member or the clamp brace.

42 . The electrical wiring device according to claim 31 , wherein movement of the activating member in the first direction is outward relative to the housing and wherein movement of the activating member in the second direction is inward relative to the housing.

43 . The electrical wiring device according to claim 31 , wherein when in the first position the force applying member can clamp the wire with a force that is substantially perpendicular to a longitudinal axis of the wire.