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US4549253A Expired / Lapsed US ⏱️ 0.0 years remaining

Lighting fixture

Assignee: FLEXILLUME Inc
•
Filing: 1983-07-18
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Granted: 1985-10-22
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Expires: 2003-07-18
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Abstract

Abstract A two part lighting fixture having side walls, and end walls, forming a reflector, supports around the lower edge of such side and end walls, by which the fixture is supported in a ceiling, upper edges of the side and end walls defining an opening, a movable electrical container movably received in the opening, the container being formed of sheet metal of predetermined thickness, for enclosing electrical fittings, and having lighting receptacles and, releaseable supports for the container.

Inventors

  • 👤 Thomas B. Totten

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 08:25
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/02; F21Y; F21Y2103/00; F21Y2113/00

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 209 words
A telescopic, retractable lighting fixture for use in ceilings for providing an illuminated recess in such a ceiling, and comprising, an electrical component container having predetermined length, width and height dimensions; lamp receiving receptacles extending downwardly below such container and together with such height dimension, defining a predetermined minimum storage height; housing means for defining such a ceiling recess, for mounting in such ceiling, such housing means having side walls and having a lower opening directed downwardly, with such side walls extending upwardly above the plane of such ceiling and defining a predetermined recess depth; upper opening means defined in an upper portion of said housing means, said upper opening means being shaped to telescopically receive said electrical container therein, said electrical container being telescopically movable within said upper opening means between upper extended and lower retracted position, said upper retracted position providing a shipping and storage function wherein said electrical component housing and electrical receptacles are stored with their storage height contained within the depth dimension of said housing, whereby said lighting fixture has a lower overall height for shipping and storage, and a greater overall height when in use, and, fastening means for fastening said electrical container relative to said housing means, in said upper extended position.
Claim 2
Dependent Claim 209 words
A telescopic, retractable lighting fixture for use in ceilings for providing an illuminated recess in such a ceiling, and comprising, an electrical component container having predetermined length, width and height dimensions; lamp receiving receptacles extending downwardly below such container and together with such height dimension, defining a predetermined minimum storage height; housing means for defining such a ceiling recess, for mounting in such ceiling, such housing means having side walls and having a lower opening directed downwardly, with such side walls extending upwardly above the plane of such ceiling and defining a predetermined recess depth; upper opening means defined in an upper portion of said housing means, said upper opening means being shaped to telescopically receive said electrical container therein, said electrical container being telescopically movable within said upper opening means between upper extended and lower retracted position, said upper retracted position providing a shipping and storage function wherein said electrical component housing and electrical receptacles are stored with their storage height contained within the depth dimension of said housing, whereby said lighting fixture has a lower overall height for shipping and storage, and a greater overall height when in use, and, fastening means for fastening said electrical container relative to said housing means, in said upper extended position.
Claim 3
Dependent Claim 26 words
A telescopic retractable lighting fixture as claimed in claim 1 including second fastening means for fastening said container to said housing in said lower retracted position.
Claim 4
Dependent Claim 67 words
A telescopic retractable lighting fixture as claimed in claim 2 wherein said fastening means comprise, movable support members on said container at spaced points therearound, and first receiving means on said housing adjacent said upper opening means, and second receiving means on said housing below said upper opening, said receiving means being adapted to receive said support members in respective upper and lower positions of said container.
Claim 5
Dependent Claim 64 words
A telescopic retractable lighting fixture as claimed in claim 1 wherein the side walls of said housing means are arranged in an upwardly converging manner, so as to provide a generally trapezoidal shape in section, with said container being located in the upper narrower portion of said shape, and including lens attaching means formed in said side walls between their upper and lower edges.
Claim 6
Dependent Claim 35 words
A telescopic retractable lighting fixture as claimed in claim 1 including releaseable supporting means on said container for supporting same in said opening, said supporting means being movable towards and away from said housing means.
Claim 7
Dependent Claim 55 words
A telescopic retractable lighting fixture as claimed in claim 4 wherein said side walls are formed with upper portions in a common horizontal plane, and lower portions angled in a downwardly divergent manner, and wherein said lens attaching means are formed by infolded wall portions along the juncture between such upper and lower wall portions.
Claim 8
Dependent Claim 49 words
A telescopic retractable lighting fixture as claimed in claim 6 including a lens of generally channel shape, having a generally horizontal centre wall panel, and side wall panels angled away from said centre wall panel, and edge formations on said side wall panels engageable with said lens attaching means.

References Cited (Backward Citations)

CA735310A Cited
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US3469089A Cited
US3788206A Cited
CA977603A Cited
US3865969A Cited
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CA1048221A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-10-21 1989-04-22 1989-10-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-10-21 1993-04-22 1993-10-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-10-21 1997-04-22 1997-10-22 $7700.00 Window Closed / Lapsed

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