US3560729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture
Assignee: Individual
•
Filing: 1969-02-18
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Granted: 1971-02-02
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Expires: 1989-02-18
Abstract
Abstract A lighting fixture for mounting within a ceiling recess including a pair of spaced elongated elements having recesses containing light sources disposed therein and shielded from direct view and light-reflecting means bridging said elements to reflect the light from the lighting means downwardly, the elements and reflectors being adapted to be placed in end-to-end relationship to form a lighting fixture of any desired length and the elements further include means for supporting adjacent ceiling elements when used in connection with hung ceilings and the reflectors may be integrated with air-conditioning means and auxiliary incandescent illumination.
Inventors
- 👤 Milton Liberman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:14
CPC Classifications
F; F21; F21V; F21V33/00; F21V33/0088
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
117 words
A lighting fixture for use with hung ceilings comprising a pair of spaced parallel, relatively rigid elements each having a substantially flat bottom plate, a baffle plate along the inner edge of each bottom plate, and an upwardly extending plate extending along each bottom plate with at least one upwardly extending plate on one element being spaced inwardly from the outer edge of said bottom plate to form an outwardly extending flange, lighting means supported between said baffle and said upwardly extending plate, concave light-reflecting means bridging said elements and directing light emitted by said lighting means in a downward direction and means for supporting said elements with said bottom plates substantially coplanar with said hung ceiling.
Claim 2
Dependent Claim
117 words
A lighting fixture for use with hung ceilings comprising a pair of spaced parallel, relatively rigid elements each having a substantially flat bottom plate, a baffle plate along the inner edge of each bottom plate, and an upwardly extending plate extending along each bottom plate with at least one upwardly extending plate on one element being spaced inwardly from the outer edge of said bottom plate to form an outwardly extending flange, lighting means supported between said baffle and said upwardly extending plate, concave light-reflecting means bridging said elements and directing light emitted by said lighting means in a downward direction and means for supporting said elements with said bottom plates substantially coplanar with said hung ceiling.
Claim 3
Dependent Claim
25 words
A lighting fixture according to claim 1 wherein said concave light-reflecting means comprises two elongated concave sections joined to form a central longitudinal V-shaped portion.
Claim 4
Dependent Claim
48 words
A lighting fixture according to claim 1 wherein each upwardly extending plate includes an inwardly extending flange spaced from the upper edge thereof and an L-shaped member below and in spaced relationship to said flange and said reflector includes spaced offset tabs engaging said L-shaped members and flanges.
Claim 5
Dependent Claim
28 words
A lighting fixture according to claim 1 wherein said upwardly extending plate on each of said elements is spaced inwardly from the outer edge of said bottom plate.
Claim 6
Dependent Claim
57 words
A lighting fixture according to claim 4 wherein each of said upwardly extending plates includes longitudinally spaced openings for engagement with T-bars of a Hung ceiling. 6 A lighting fixture according to claim 1 including a ballast housing disposed above one of said elements and means including a wire-receiving channel securing said ballast housing to said element.
Claim 7
Dependent Claim
33 words
A lighting fixture according to claim 1 wherein said reflector includes a longitudinally disposed louver assembly and said fixture further includes a longitudinally disposed air-conditioning duct having an opening communicating with said louver.
Claim 8
Dependent Claim
22 words
A lighting fixture according to claim 7 wherein said louver assembly includes dampers for controlling the flow of air through said louvers.
Claim 9
Dependent Claim
41 words
A lighting fixture according to claim 1 wherein said reflector includes at least one opening therein, a housing overlying said opening and secured to said reflector and incandescent lighting means disposed within said housing and directing light downwardly through said opening.
Claim 10
Dependent Claim
33 words
A lighting fixture according to claim 9 wherein said reflector includes a longitudinally disposed louver assembly, and said fixture further includes a longitudinally disposed air-conditioning duct having an opening communicating with said louver.
Claim 11
Dependent Claim
61 words
A lighting fixture according to claim 1 wherein the other of said elements has its upwardly extending plate disposed centrally of said bottom plate and the outer edge of the last said plate includes a second baffle extending along the length thereof, the last said plate supporting one edge of a second reflector in side-by-side relationship to the first said reflector.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |