Patent US3589660A successfully refreshed from Google Patents.
US3589660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture hanger
Assignee: National Service Industries Inc
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Filing: 1970-03-05
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Granted: 1971-06-29
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Expires: 1990-03-05
Abstract
Abstract A device for hanging lighting fixtures below a dropped ceiling from inverted tees which support the dropped ceiling. A pair of wing portions depend from a body portion of the device for lockably engaging the lighting fixture. One or two pairs of clips extend above the body portion for selectively attaching the device to an inverted tee such that the fixture hangs either parallel or perpendicular to the inverted tee. In another embodiment, the device is attached to an inverted tee with a pair of clips on a bracket which is pivotally mounted to the body portion of the device such that a lighting fixture can be hung at any angle to the inverted tee.
Inventors
- 👤 Bruce P Dunckel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:32
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/02; F21Y; F21Y2103/00; F21Y2113/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
181 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, said device comprising: a flat elongated body portion, a pair of wing portions extending downwardly from the ends of said body portion, said pair of wing portions being spaced to receive the lighting fixture between them, means on said wing portions for lockably engaging the lighting fixture when the lighting fixture is inserted between said Wing portions, stop tabs projecting from said wing portions for holding the lighting fixture at a predetermined spacing below said body portion, a flat elongated mounting bracket, said mounting bracket having first and second edges and first and second ends, a first clip extending above said bracket from adjacent said first edge and said first end, a detent projecting above said bracket adjacent said second edge opposite said first clip, a second clip extending above said bracket from adjacent said second edge and said second end, a detent projecting above said bracket adjacent said first edge opposite said second clip, and means pivotally attaching said body portion to said bracket.
Claim 2
Independent Claim
181 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, said device comprising: a flat elongated body portion, a pair of wing portions extending downwardly from the ends of said body portion, said pair of wing portions being spaced to receive the lighting fixture between them, means on said wing portions for lockably engaging the lighting fixture when the lighting fixture is inserted between said Wing portions, stop tabs projecting from said wing portions for holding the lighting fixture at a predetermined spacing below said body portion, a flat elongated mounting bracket, said mounting bracket having first and second edges and first and second ends, a first clip extending above said bracket from adjacent said first edge and said first end, a detent projecting above said bracket adjacent said second edge opposite said first clip, a second clip extending above said bracket from adjacent said second edge and said second end, a detent projecting above said bracket adjacent said first edge opposite said second clip, and means pivotally attaching said body portion to said bracket.
Claim 3
Independent Claim
135 words
A device for hanging a longitudinally extending lighting fixture from an inverted tee support for a dropped ceiling, said device comprising: a generally flat body portion, said body portion having at least two opposed edges, a pair of wing portions depending from said opposed edges, said pair of wing portions being spaced to receive the lighting fixture between them, means on said wing portions for lockably engaging the lighting fixture when the lighting fixture is inserted between said spaced wing portions, and means for selectively attaching said body portion to the inverted tee in the first and second positions, said wing portions being directed parallel to the inverted tee when said body portion is attached in said first position and perpendicular to the inverted tee when said body portion is attached in said second position.
Claim 4
Independent Claim
135 words
A device for hanging a longitudinally extending lighting fixture from an inverted tee support for a dropped ceiling, said device comprising: a generally flat body portion, said body portion having at least two opposed edges, a pair of wing portions depending from said opposed edges, said pair of wing portions being spaced to receive the lighting fixture between them, means on said wing portions for lockably engaging the lighting fixture when the lighting fixture is inserted between said spaced wing portions, and means for selectively attaching said body portion to the inverted tee in the first and second positions, said wing portions being directed parallel to the inverted tee when said body portion is attached in said first position and perpendicular to the inverted tee when said body portion is attached in said second position.
Claim 5
Dependent Claim
93 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, as defined in claim 2, wherein said means for selectively attaching said body portion to the inverted tee in first and second positions comprises: a first pair of clips formed in and projecting above said body portion for attaching said body portion to the inverted tee in said first position, and a second pair of clips formed in and projecting above said body portion for attaching said body portion to the inverted tee in said second position.
Claim 6
Dependent Claim
71 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, as defined in claim 3, and further including four detents, each of said four detents projecting above said body portion opposite a different clip of said first and second pair of clips, whereby, when said body portion is attached to the inverted tee, two of said detents lock said body portion onto the inverted tee.
Claim 7
Dependent Claim
29 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, as defined in claim 3, wherein said body portion is octagonal in shape.
Claim 8
Dependent Claim
71 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, as defined in claim 3, wherein the two clips of said first pair of clips face in opposite directions for attaching to the inverted tee by rotating said body portion, and the two clips of said second pair of clips face in opposite directions for attaching to the inverted tee by rotating said body portion.
Claim 9
Dependent Claim
81 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, as defined in claim 3, and further including at least four reinforcement embossings formed in and projecting above said body portion, each of said four embossings having an end spaced from a different clip of said first and second pairs of clips whereby, when said body portion is attached to the inverted tee, two of said ends lock said body portion onto the inverted tee.
Claim 10
Dependent Claim
44 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, as defined in claim 2, and further including stop means for holding the lighting fixture between said spaced wing portions at a predetermined spacing below said body portion.
Claim 11
Independent Claim
135 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, said device comprising: a generally flat body portion, said body portion having at least two opposed edges, a pair of wing portiOns depending from said opposed edges, said pair of wing portions being spaced to receive the lighting fixture therebetween, means on said spaced wing portions for lockably engaging the lighting fixture when the lighting fixture is inserted between said spaced wing portions, and a pair of clips integral with and extending above said body portion for attaching said body portion to the inverted tee, said clips being so positioned that, when said device is attached to the inverted tee and the lighting fixture is locked to said wing portions, the lighting fixture hangs parallel to the inverted tee.
Claim 12
Independent Claim
135 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, said device comprising: a generally flat body portion, said body portion having at least two opposed edges, a pair of wing portiOns depending from said opposed edges, said pair of wing portions being spaced to receive the lighting fixture therebetween, means on said spaced wing portions for lockably engaging the lighting fixture when the lighting fixture is inserted between said spaced wing portions, and a pair of clips integral with and extending above said body portion for attaching said body portion to the inverted tee, said clips being so positioned that, when said device is attached to the inverted tee and the lighting fixture is locked to said wing portions, the lighting fixture hangs parallel to the inverted tee.
Claim 13
Dependent Claim
62 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, as defined in claim 9, and further including a pair of detents, each of said detents projecting above said body portion opposite a different clip, whereby, when said pair of clips are attached to the inverted tee, said detents lock said clips onto the inverted tee.
Claim 14
Dependent Claim
43 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, as defined in claim 9, and including stop means for holding the lighting fixture between said spaced wing portions at a predetermined spacing below said body portion.
Claim 15
Independent Claim
134 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, said device comprising: a generally flat body portion, said body portion having at least two opposed edges, a pair of wing portions depending from said opposed edges, said pair of wing portions being spaced to receive the lighting fixture therebetween, means on said wing portions for lockably engaging the lighting fixture when the lighting fixture is inserted between said spaced wing portions, and a pair of clips integral with and extending above said body portions for attaching said body portion to the inverted tee, said clips being so positioned that, when said device is attached to the inverted tee and the lighting fixture is locked to said wing portions, the lighting fixture hangs perpendicular to the inverted tee.
Claim 16
Independent Claim
134 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, said device comprising: a generally flat body portion, said body portion having at least two opposed edges, a pair of wing portions depending from said opposed edges, said pair of wing portions being spaced to receive the lighting fixture therebetween, means on said wing portions for lockably engaging the lighting fixture when the lighting fixture is inserted between said spaced wing portions, and a pair of clips integral with and extending above said body portions for attaching said body portion to the inverted tee, said clips being so positioned that, when said device is attached to the inverted tee and the lighting fixture is locked to said wing portions, the lighting fixture hangs perpendicular to the inverted tee.
Claim 17
Dependent Claim
62 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, as defined in claim 12, and further including a pair of detents, each of said detents projecting above said body portion opposite a different clip, whereby, when said pair of clips are attached to the inverted tee, said detents lock said clips onto the inverted tee.
Claim 18
Dependent Claim
44 words
A device for hanging a lighting fixture from an inverted tee support for a dropped ceiling, as defined in claim 12, and further including stop means for holding the lighting fixture between said spaced wing portions at a predetermined spacing below said body portion.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |