Height adjustable pendant lamp canopy assembly

• US 8,931,936 B1
• Filed: 12/29/2011
• Issued: 01/13/2015
• Est. Priority Date: 01/01/2011
• Status: Expired due to Fees

• Current Assignee: WAC Lightning Company Limited
• Original Assignee: WAC Lightning Company Limited
• Inventors: Tham, Sean, McGee, Molly, Rao, JunQuan
• Primary Examiner(s): CARIASO, ALAN B
• Application Number:
  US13/340,518
• Time in Patent Office: 1,111 Days
• Field of Search: 362/382, 362/403, 362/404, 362/457, 362/391, 362/407, 362/458, 241/29.A, 241/35.R, 241/35.A, 241/35.K, 241/35.L, 241/35.N, 241/36.B, 403/391, 403/396, 248/323, 248/328, 248/345, 439/98, 439/814
• US Class Current: 362/404
• CPC Class Codes: F16G 11/108 using a ball or a cylinder
• CPC Class Codes: F21S 8/061 with a non-rigid pendant, i.e. a cable, wire or chain
• CPC Class Codes: F21V 21/16 using wires or cords
• CPC Class Codes: F21V 21/38 with a cable
• CPC Class Codes: Y10T 24/3967 Bolt perpendicular to cable axis

Abstract

A height-adjustable pendant lamp canopy assembly with an overhead-mounted junction box; a base-plate mounted transformer therein; an apertured insulating spacer plate below the base plate; a releasable cord grip with a threaded lower end protruding through the aperture; and, a clamping nut securing, releasably, the canopy cover on the end of the cord grip. A cord braid connector has a metal body with a cord-receiving, through-socket, a terminating portion for a fixture ground wire, and, a transverse screw hole. A braid-clamping, metal collar is clamped around braid of cord extending through the through-socket with the collar stuffed axially into the through-socket; and a clamping screw in the screw hole anchoring the metal collar and braid in the through-socket in a permanent electrical connection of the braid and the connector body, irrespective of limited lamp raising or lowering movement of the lamp power cord.

Claims

1. A height-adjustable pendant lamp canopy assembly comprising:

an overhead-mounted junction box;

a base-plate mounted transformer received in the junction box;

an insulating spacer plate formed with a central opening and located below the base plate in insulating relation;

a braided lamp cord grip comprising an elongate, cable-receiving, body with a lower, tubular, externally threaded end portion having an axial cable-receiving passageway and being suspended from the base plate extending downward through the central opening of the insulating spacer plate exposing the threaded end portion, the cord grip being releasable to permit longitudinal cord movement there-through to raise and lower the lamp;

a canopy cover with a central opening receiving the threaded end portion of the cord grip extending there-through;

a clamping nut on the threaded end portion securing, releasably, the canopy cover to the cord grip adjacent the end portion;

a cord braid connecting assembly comprising;

a connector having a metal body formed with a cord-receiving, axial through-socket, a terminating portion for a fixture ground wire, and, a screw hole communicating transversely with the through-socket;

a braid-clamping, metal collar clamped around braid of cord extending through the through-socket with the collar stuffed axially into the through-socket; and

a clamping screw in the screw hole anchoring the metal collar and braid in the through-socket in a permanent electrical connection of the braid and the connector body, irrespective of limited lamp raising or lowering movement of the lamp power cord.

2. A height-adjustable pendant lamp canopy assembly according to claim 1 wherein

the braid clamping collar is formed at one axial end with an annular, radially outwardly extending flange of greater diameter than a diameter of the through-socket.

3. A height-adjustable pendant lamp canopy assembly according to claim 2 wherein the cord grip comprises a press-to-release mechanism providing cord releasability.

4. A height-adjustable pendant lamp canopy assembly comprising:

an overhead-mounted junction box;

a base-plate mounted transformer received in the junction box;

an insulating spacer plate formed with a central opening and located below the base plate in insulating relation;

a releasable lamp cord grip comprising an elongate, cable-receiving, body with a lower, tubular, externally threaded end portion having an axial cable-receiving passageway and being suspended from the base plate extending downward through the central opening of the insulating spacer plate exposing the threaded end portion, the cord grip being releasable to permit longitudinal cord movement there-through to raise and lower the lamp;

a canopy cover with a central opening receiving the threaded end portion of the cord grip extending there-through;

a clamping nut on the threaded end portion securing, releasably, the canopy cover to the cord grip adjacent the end portion;

a lamp cord braid connecting assembly comprising;

an electrical connector having a metal body formed with a cord-receiving, axial through-socket, a terminating portion for a fixture ground wire, and,

a braid embracing means for anchoring the braid in the through-socket in a permanent electrical connection of the braid and the connector body, irrespective of limited lamp raising or lowering movement of the lamp power cord.

5. A height-adjustable pendant lamp canopy assembly according to claim 4 wherein

the braid embracing means comprises a metal collar embracing the braid and stuffed axially into the through-socket.

6. A height-adjustable pendant lamp canopy assembly according to claim 5 wherein the clamping collar is formed at one axial end with an annular, radially outwardly extending flange of greater diameter than a diameter of the through-socket.