US4234916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture
Assignee: Individual
•
Filing: 1978-08-17
•
Granted: 1980-11-18
•
Expires: 1998-08-17
Abstract
Abstract A lighting fixture adapted to be mounted on a ceiling by attachment to an outlet box in the ceiling. The fixture comprises a pan having an upwardly extending rim and a crossbar attached to the bottom of the outlet box in a position extending horizontally across the bottom of the box. The rim of the pan is adapted to be attached to at least one end of the crossbar for mounting the pan adjacent the ceiling.
Inventors
- 👤 Charles D. Goralnik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:11
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/02; F21S; F21S8/00; F21S8/04; F21V21/03; F21V29/00; F21V29/15
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
198 words
A lighting fixture adapted to be mounted on a ceiling by attachment to an outlet box in the ceiling, comprising: a crossbar adapted to be attached to the bottom of the outlet box in position extending horizontally across the bottom of the box, a pan having a relatively thin flat bottom adapted to extend generally horizontally below the crossbar and spaced therefrom, a rim extending upwardly from the bottom of the pan, means for attaching the rim to the crossbar, a lip extending downwardly from the bottom of the pan generally at the periphery thereof, means secured to the bottom of the pan for mounting a light source on the underside of the pan, a diffuser for surrounding said light source, means for fastening the diffuser on the underside of the pan adjacent said lip, the bottom of the pan being substantially continuous and free of any relatively large openings therein, and insulation in the pan above the bottom of the pan and said mounting means for thermally insulating the light source, said mounting means and the pan from the outlet box thereby to reduce the transfer of heat generated by the light source to the outlet box.
Claim 2
Dependent Claim
198 words
A lighting fixture adapted to be mounted on a ceiling by attachment to an outlet box in the ceiling, comprising: a crossbar adapted to be attached to the bottom of the outlet box in position extending horizontally across the bottom of the box, a pan having a relatively thin flat bottom adapted to extend generally horizontally below the crossbar and spaced therefrom, a rim extending upwardly from the bottom of the pan, means for attaching the rim to the crossbar, a lip extending downwardly from the bottom of the pan generally at the periphery thereof, means secured to the bottom of the pan for mounting a light source on the underside of the pan, a diffuser for surrounding said light source, means for fastening the diffuser on the underside of the pan adjacent said lip, the bottom of the pan being substantially continuous and free of any relatively large openings therein, and insulation in the pan above the bottom of the pan and said mounting means for thermally insulating the light source, said mounting means and the pan from the outlet box thereby to reduce the transfer of heat generated by the light source to the outlet box.
Claim 3
Dependent Claim
19 words
A lighting fixture as set forth in claim 1 wherein said rim is at the periphery of the pan.
Claim 4
Dependent Claim
37 words
A lighting fixture as set forth in claim 2 wherein said rim and said lip are integrally formed, the lower margins of said lip being bent upwardly on the outside of the lip to form said rim.
Claim 5
Dependent Claim
23 words
A lighting fixture as set forth in claim 1 wherein said diffuser is adapted for attachment to said lip via said fastening means.
Claim 6
Dependent Claim
67 words
A lighting fixture as set forth in claim 1 wherein the crossbar is of such length as to extend laterally outwardly from the box beyond opposite sides of the box and has a downwardly extending flange at each of its ends, the rim being dimensioned in accordance with the length of the crossbar for interfitting in face-to-face relation with the flanges at the ends of the bar.
Claim 7
Dependent Claim
20 words
A lighting fixture as set forth in claim 5 wherein the flanges extend down on the inside of the rim.
Claim 8
Dependent Claim
20 words
A lighting fixture as set forth in claim 5 wherein the flanges extend down on the outside of the rim.
Claim 9
Dependent Claim
43 words
A lighting fixture as set forth in claim 5 wherein the rim is at the periphery of the pan, and the length of the crossbar generally corresponds to the distance between opposite sides of the rim where the flanges interfit with the rim.
Claim 10
Dependent Claim
20 words
A lighting fixture as set forth in claim 8 wherein the flanges extend down on the inside of the rim.
Claim 11
Dependent Claim
20 words
A lighting fixture as set forth in claim 8 wherein the flanges extend down on the outside of the rim.
Claim 12
Dependent Claim
35 words
A lighting fixture as set forth in claim 5 wherein the rim has bayonet slots extending down from its upper edge for receiving said fastening means, the latter extending from the flanges into the slots.
Claim 13
Dependent Claim
19 words
A lighting fixture as set forth in claim 11 wherein the rim is of smaller dimension than the pan.
Claim 14
Dependent Claim
26 words
A lighting fixture as set forth in claim 12 wherein the rim and pan are circular and the rim is of smaller diameter than the pan.
Claim 15
Dependent Claim
20 words
A lighting fixture as set forth in claim 1 wherein said lip extends down on the outside of the diffuser.
References Cited (Backward Citations)
US1507758A
Cited
US1529823A
Cited
US1462132A
Cited
US1535696A
Cited
US1564609A
Cited
US1617184A
Cited
US1618610A
Cited
US1693396A
Cited
US1703649A
Cited
US1782791A
Cited
US1844639A
Cited
US1878084A
Cited
US1885514A
Cited
US2638531A
Cited
US2907545A
Cited
US2918569A
Cited
US3461283A
Cited
US3836766A
Cited
US4044246A
Cited
US4104713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |