US3686496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting troffer
Assignee: Treis Industries Ltd
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Filing: 1970-07-21
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Granted: 1972-08-22
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Expires: 1990-07-21
Abstract
Abstract A troffer for a light fixture for use in a suspended ceiling structure has elongated resilient members secured to its side walls so as to project downwardly therefrom. Each of such elongated resilient members has an upwardly facing seating for supporting a light-transmitting sheet member in the troffer and an outwardly projecting lower flange for supported disposition on an adjacent flange of a conventional T-shaped strut of the ceiling structure, or as an alternate embodiment additional tile support adaptors may be coupled thereto for directly supporting adjacent ceiling tiles or panels.
Inventors
- 👤 Thomas Bernard Totten
- 👤 Robert Wilmer Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:21
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/02; F21V21/04; F21S; F21S8/00; F21S8/02; F21Y; F21Y2103/00; F21Y2113/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
147 words
A universal light troffer for use in ceiling structures both with and without suitably located ceiling struts, said troffer comprising; a lamp housing with side walls having lower edges defining a light-transmitting, generally planar opening; elongated resilient members having inner walls, being secured to respective ones of said side walls of said lamp housing, and projecting downwardly therefrom around said light-transmitting, generally planar opening; upwardly facing supporting seatings integrally formed with said elongated resilient members; lower flanges integrally formed with said elongated resilient members for locating said troffer in a predetermined ceiling location; continuous spaced apart projecting finger means incorporating an upwardly projecting flange, integrally formed therewith defining a continuous upwardly directed channel therebetween for receiving a portion of a side wall of said lamp housing therein, and, fastening means being formed integrally with said finger means within said continuous channels for securing said sidewall portion therein.
Claim 2
Dependent Claim
147 words
A universal light troffer for use in ceiling structures both with and without suitably located ceiling struts, said troffer comprising; a lamp housing with side walls having lower edges defining a light-transmitting, generally planar opening; elongated resilient members having inner walls, being secured to respective ones of said side walls of said lamp housing, and projecting downwardly therefrom around said light-transmitting, generally planar opening; upwardly facing supporting seatings integrally formed with said elongated resilient members; lower flanges integrally formed with said elongated resilient members for locating said troffer in a predetermined ceiling location; continuous spaced apart projecting finger means incorporating an upwardly projecting flange, integrally formed therewith defining a continuous upwardly directed channel therebetween for receiving a portion of a side wall of said lamp housing therein, and, fastening means being formed integrally with said finger means within said continuous channels for securing said sidewall portion therein.
Claim 3
Dependent Claim
38 words
A troffer as claimed in claim 1 in which said upwardly facing supporting seatings are provided by outwardly projecting upper flanges integrally formed with said inner walls of said elongated resilient members upwardly of said lower flanges thereof.
Claim 4
Dependent Claim
29 words
A troffer as claimed in claim 2 in which each said outwardly projecting upper flange is integrally formed with an upwardly projecting lip disposed inwardly of said finger means.
Claim 5
Dependent Claim
62 words
A troffer as claimed in claim 1 in which said finger means include a downwardly facing lip, and including a plurality of tongues upset from a respective one of said side walls of said lamp housing adapted to interengage with said lip whereby to retain said elongated resilient member in engagement with said portions of said side walls of said lamp housing.
Claim 6
Dependent Claim
20 words
A troffer as claimed in claim 1 in which said elongated resilient members are formed of a resilient plastic material.
Claim 7
Dependent Claim
64 words
A troffer as claimed in claim 1 including adaptor means attached to respective resilient members generally vertically spaced apart, generally horizontal finger means on a respective adaptor member defining a continuous channel therebetween in which each said lower flange of said elongated resilient members is engaged, and outwardly directed flanges on said adaptor members extending outwardly beyond said finger means thereof to provide seatings.
Claim 8
Dependent Claim
58 words
A troffer as claimed in claim 6 in which one of said upper and lower finger means of each said adaptor member and each said outwardly projecting lower flange of said elongated resilient members are formed with cooperating surfaces to retain said outwardly projecting lower flange of said elongated resilient member within said recess of said adaptor member.
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |