Retractable light assembly

• US 8,721,124 B2
• Filed: 06/12/2012
• Issued: 05/13/2014
• Est. Priority Date: 06/12/2011
• Status: Active Grant

• Current Assignee: Norman R. Byrne, Peter Stathis, Randell E. Pate, Robert L. Knapp, Timothy J. Warwick
• Original Assignee: Norman R. Byrne, Peter Stathis, Randell E. Pate, Robert L. Knapp, Timothy J. Warwick
• Inventors: Byrne, Norman R., Knapp, Robert L., Pate, Randell E., Warwick, Timothy J., Stathis, Peter
• Primary Examiner(s): Truong, Bao Q
• Application Number:
  US13/494,204
• Publication Number:
  US 20120314418A1
• Time in Patent Office: 700 Days
• Field of Search: 362285-289, 362418-430, 362/188, 362/190, 362/191, 362/220, 362/233, 362/249.07, 362/249.1
• US Class Current: 362/285
• CPC Class Codes: F21S 6/003 for task lighting, e.g. for reading or desk work, e.g. angle poise lamps
• CPC Class Codes: F21S 8/022 intended to be recessed in a floor or like ground surface, e.g. pavement or false floor
• CPC Class Codes: F21S 8/028 being retractable, i.e. having two fixed positions, one recessed, e.g. in a wall, floor or ceiling, and one extended when in use
• CPC Class Codes: F21V 21/22 telescopic
• CPC Class Codes: F21V 21/29 employing universal joints
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A retractable lamp assembly is provided for illuminating at least a portion of a work surface from a wide range of heights and angles by way of extendable shafts and pivot joints. The lamp may be stowed in a retracted or lowered configuration when not in use, in which a substantial portion of the extendable structure is stowed inside of a housing that is located substantially below the work surface, to provide a generally unobtrusive configuration. An upper cover serves as a light reflector when the lamp is in use, and may serve as a cover positioned at or near the work surface when the lamp is stowed. Optionally, the lamp assembly includes include power and data and wire management capabilities for use at the work surface.

Claims

1. A retractable light assembly for illuminating a work surface, said light assembly comprising:

a lower housing configured to be positioned at or in a work surface;

a lamp that is repositionable between at least a raised position spaced above said lower housing, and a lowered position at said lower housing, wherein said lamp is operative to illuminate at least a portion of the work surface when in said raised position;

at least one extendable shaft having a lower end portion coupled to said lower housing, and an upper end portion coupled to said lamp;

a first gimbal joint at said lower end portion of said extendable shaft for coupling said extendable shaft to said lower housing;

a second gimbal joint for coupling said extendable shaft to said lamp, wherein said lamp is independently pivotable about said first and second gimbal joints for illuminating a desired portion of the work surface; and

wherein said lamp is pivotable about said first gimbal joint when said lamp is in said raised position.

3. The light assembly of claim 1, wherein said lamp is rotatable about a longitudinal axis of said extendable shaft.

4. The light assembly of claim 3, comprising at least two of said extendable shafts having respective lower end portions, upper end portions, and wherein said first and second gimbal joints are coupled to said lower end portions and said upper end portions, respectively.

5. The light assembly of claim 1, wherein said extendable shaft comprises a plurality of telescoping shaft portions that are extendable and retractable relative to one another.

6. The light assembly of claim 1, further comprising a cover member positioned atop said lamp, said cover member configured to reflect light from said lamp in the direction of the work surface.

9. The light assembly of claim 1, wherein said extendable shaft is configured to position said lamp at a plurality of said raised positions, between a fully raised position and a fully lowered position.

10. The light assembly of claim 1, wherein at least one of said first and second gimbal joints comprises a ball joint.

13. The light assembly of claim 1, further comprising at least one electrical power outlet at an upper end portion of said lower housing.

14. The light assembly of claim 13, further comprising a cover member positioned atop said lamp, said cover member configured to reflect light emanating from said lamp in the direction of the work surface when said lamp is at the raised position, and wherein said cover member substantially covers said at least one electrical power outlet when said lamp is at a fully lowered position.

15. The light assembly of claim 1, wherein said lamp comprises an electric lamp, and said lower housing and said extendable shaft each comprise electrical wiring in communication with said electric lamp.

16. The light assembly of claim 1, wherein said lower housing is configured to be received in an opening formed in the work surface.

17. The light assembly of claim 1, wherein said extendable shaft is longitudinally extendable and retractable, and where said extendable shaft is positioned substantially in said lower housing when said lamp is in a fully lowered position.

2. A retractable light assembly for illuminating a work surface, said light assembly comprising:

a lower housing configured to be positioned at or in a work surface;

a lamp that is repositionable between at least a raised position spaced above said lower housing, and a lowered position at said lower housing, wherein said lamp is operative to illuminate at least a portion of the work surface when in said raised position;

a cover member positioned atop said lamp, said cover member configured to reflect light from said lamp in the direction of the work surface, wherein said cover member substantially covers an upper end portion of said lower housing when said lamp is at a fully lowered position;

at least one extendable shaft having a lower end portion coupled to said lower housing, and an upper end portion coupled to said lamp;

a gimbal joint at one of said lower end portion of said extendable shaft for coupling said extendable shaft to said lower housing, or said upper end portion of said extendable shaft for coupling said extendable shaft to said lamp; and

wherein said lamp is pivotable about said gimbal joint when said lamp is in said raised position.

7. The light assembly of claim 2, wherein said gimbal joint comprises a first gimbal joint for coupling said extendable shaft to said lower housing, and wherein said light assembly further comprises a second gimbal joint for coupling said extendable shaft to said lamp, whereby said lamp is independently pivotable about said first and second gimbal joints for illuminating a desired portion of the work surface.

8. The light assembly of claim 2, wherein said cover member is substantially flush with an upper surface portion of the work surface when said lamp is at the fully lowered position.

11. A retractable light assembly for illuminating a work surface, said light assembly comprising:

a lower housing configured to be positioned at or in a work surface;

a lamp that is repositionable between at least a raised position spaced above said lower housing, and a lowered position at said lower housing, wherein said lamp is operative to illuminate at least a portion of the work surface when in said raised position;

at least one extendable shaft having a lower end portion coupled to said lower housing, and an upper end portion coupled to said lamp;

a gimbal joint at one of said lower end portion of said extendable shaft for coupling said extendable shaft to said lower housing, or said upper end portion of said extendable shaft for coupling said extendable shaft to said lamp;

an upper flange at an upper end portion of said lower housing;

a bracket movably coupled to an exterior side wall of said housing, wherein said bracket is securable against a lower surface portion of the work surface when said upper flange engages an upper surface portion of the work surface to thereby secure said lower housing to the work surface; and

wherein said lamp is pivotable about said gimbal joint when said lamp is in said raised position.

12. The light assembly of claim 11, wherein said bracket comprises an adjustable bracket configured to engage the lower surface portion of the work surface for a range of thicknesses of the work surface.

18. A retractable light assembly for illuminating a work surface, said light assembly comprising:

a lower housing configured to be received in an opening formed in a work surface;

an electric lamp that is repositionable between at least a raised position spaced above said lower housing, and a lowered position, wherein said lamp is operative to illuminate at least a portion of the work surface when in said raised position;

a pair of telescopingly extendable shafts having respective lower end portions pivotably coupled to said lower housing via respective lower pivot joints, and further having respective upper end portions pivotably coupled to said electric lamp via respective upper pivot joints; and

wherein said lamp is pivotable about said upper and lower pivot joints when said lamp is in said raised position.

19. The light assembly of claim 18, further comprising a substantially vertically movable carriage disposed in said lower housing, and wherein said lower pivot joints are disposed at said movable carriage and are movable with said carriage between a raised position corresponding to said raised position of said lamp, and a lowered position corresponding to said lowered position of said lamp.

20. The light assembly of claim 19, further comprising a friction element configured to resist movement of said carriage relative to said lower housing, whereby said carriage will remain in a substantially fixed position relative to said lower housing until a force sufficient to overcome said friction element is applied to said carriage.

21. The light assembly of claim 20, wherein said upper and lower pivot joints comprise ball joints.

22. The light assembly of claim 19, further comprising:

at least one electrical power outlet at an upper end portion of said lower housing;

a cover member positioned atop said lamp, said cover member configured to reflect light emanating from said lamp in the direction of the work surface when said lamp is at the raised position; and

wherein said cover member substantially covers said at least one electrical power outlet when said lamp is at a fully lowered position.