US3673402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extendible lighting fixture
Assignee: Individual
•
Filing: 1970-10-19
•
Granted: 1972-06-27
•
Expires: 1990-10-19
Abstract
Abstract A flourescent lighting fixture housing is manufactured in a compact size and shape. While in this compact size, the fixture is shipped, warehoused, and otherwise manipulated prior to installation. To facilitate further manipulation during the actual installation itself, it is possible to mount the fixture while in its compact condition, and to thereafter extend it to its full length. There are many savings which result from such a fixture.
Inventors
- 👤 Harvey I Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:41
CPC Classifications
F; F21; F21V; F21V19/00; F21V19/0075; F21V19/008; F21V17/00; F21V17/007; F21V17/10; F21V17/102; F21V17/107; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
171 words
A non-welded fluorescent lighting fixture comprising a multipart channel-shaped housing having a generally rectangular cross section and closed on one side by cover plates, said housing being initially manufactured in a compact assembly and telescopingly extendible to any of a plurality of positions, lamp receiving means comprising at least one socket terminal on each of said housing parts, said sockets depending from said rectangular housing on the cover plate side thereof, said housing forming a wire channel extending between said sockets, means for telescopingly extending said compact assembly to one of said plurality of positions where said sockets on each of said housing parts are axially aligned and spaced apart by the selected length of a fluorescent lamp tube, housing locking means mounted on one of said telescoping, rectangular housing parts and snapping into a mating means on another housing part for selectively indexing and limiting the length to which said fixtures may be extended; and means for electrically interconnecting all of said fixture parts to provide a completely grounded unit.
Claim 2
Dependent Claim
171 words
A non-welded fluorescent lighting fixture comprising a multipart channel-shaped housing having a generally rectangular cross section and closed on one side by cover plates, said housing being initially manufactured in a compact assembly and telescopingly extendible to any of a plurality of positions, lamp receiving means comprising at least one socket terminal on each of said housing parts, said sockets depending from said rectangular housing on the cover plate side thereof, said housing forming a wire channel extending between said sockets, means for telescopingly extending said compact assembly to one of said plurality of positions where said sockets on each of said housing parts are axially aligned and spaced apart by the selected length of a fluorescent lamp tube, housing locking means mounted on one of said telescoping, rectangular housing parts and snapping into a mating means on another housing part for selectively indexing and limiting the length to which said fixtures may be extended; and means for electrically interconnecting all of said fixture parts to provide a completely grounded unit.
Claim 3
Dependent Claim
24 words
The fiXture of claim 1 wherein there are two of said housing parts telescoped together when said fixture is in said compact assembly condition.
Claim 4
Dependent Claim
59 words
The fixture of claim 2 wherein said locking means comprises an indexing opening in one of said telescoping parts and a spring biased detent on the other of said telescoping parts, said detent falling into said indexing opening to positively lock the housing parts together when said fixture is extended to the selected length of said fluorescent lamp tube.
Claim 5
Dependent Claim
48 words
The fixture of claim 3 wherein said housing parts comprise an inner housing and outer housing, a plurality of electrical components in said fixture, and means whereby all electrical components of said fixture except the sockets on said outer housing part are mounted in said inner housing part.
Claim 6
Dependent Claim
53 words
The fixture of claim 2 wherein said housing parts comprise an inner housing part and an outer housing part, and a clip-in plate for attachment to said inner housing part, a plurality of electrical components in said fixture, and means whereby all electrical components of said fixtures are mounted on said clip-in plate.
Claim 7
Dependent Claim
20 words
The fixture of claim 5 and means on said clip-in plate for anchoring said plate firmly in said inner housing.
Claim 8
Dependent Claim
55 words
The fixture of claim 5 wherein each of said housing parts has a pair of side walls, each side wall being shaped to form a track section to facilitate a telescoping of said housing parts, and means on said clip-in plate for snapping said plate into said track section thereby locking it into said housing.
Claim 9
Dependent Claim
31 words
The fixture of claim 5 and heat sink means mounted on said clip-in plate for dissipating heat from said components mounted on said plates and into the air surrounding said fixture.
Claim 10
Dependent Claim
44 words
The fixture of claim 1 wherein said housing has more than two of said parts nested together when in a compact condition with each of said parts overlapping substantially all of the other parts before said fixture is drawn out to said extended condition.
Claim 11
Dependent Claim
32 words
The fixture of claim 1 and a plurality of knockout plugs on at least one of said housing parts for selectively indexing the length to which said housing parts may be extended.
Claim 12
Dependent Claim
22 words
The fixtures of claim 1 and multi-part telescoping lens means attached to said housing parts for diffusing light from said fluorescent lamp.
Claim 13
Dependent Claim
28 words
The fixture of claim 11 and indexing means associated with each of said lens parts for positioning said lens in an extended position after said lens is extended.
Claim 14
Dependent Claim
19 words
The fixture of claim 11 and trough means connected to said fixture for receiving and supporting said extended lens.
Claim 15
Dependent Claim
19 words
The fixture of claim 13 and means for selectively clipping a selected number of ballasts into said housing parts.
References Cited (Backward Citations)
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Cited
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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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |