US4302798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pan for ceiling mounted light fixture
Assignee: Cooper Technologies Co
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Filing: 1980-04-07
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Granted: 1981-11-24
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Expires: 2000-04-07
Abstract
Abstract A pan for a ceiling mounted light fixture includes a saucer-like canopy defining a mounting hole for receipt of a fastener to secure the light fixture to a ceiling support surface. A first layer of insulative material is received between the canopy and the ceiling surface. Descending arms spaced about the periphery of the canopy join the canopy to a housing portion which is suspended therefrom. The housing portion includes concentric outer and inner walls, the latter of which has an inwardly extending lip or ledge defining a shelf to support a second layer of insulative material disposed between the canopy and shelf. Electrical sockets for receiving incandescent lamps are mounted on the lower wall of the shelf and a glass or the like shade is received thereover and secured by screws extending through the outer wall of the housing portion. The double layers of insulative material serve as barriers to prevent damage to the ceiling surface from heat generated by the incandescent lamps of the light fixture.
Inventors
- 👤 Hoffman Sit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:44
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/04; F21V; F21V21/00; F21V21/02; F21V21/03; F21V25/00; F21V29/00; F21V29/15; F21Y; F21Y2113/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
113 words
A light fixture for mounting on a ceiling or the like support surface including in combination; a pan comprising a canopy portion mountable in contacting engagement with said support surface, a first layer of insulative material disposed between said canopy portion and said support surface, a housing portion having rim means, a support shelf extending generally horizontally inwardly within said rim means and arm means joining said canopy and housing portions, said housing portion being suspended from said canopy portion by said arm means, a second layer of insulative material supported on said shelf beneath said canopy and lampholder means mounted on said shelf on the surface thereof opposite said second insulative layer.
Claim 2
Dependent Claim
113 words
A light fixture for mounting on a ceiling or the like support surface including in combination; a pan comprising a canopy portion mountable in contacting engagement with said support surface, a first layer of insulative material disposed between said canopy portion and said support surface, a housing portion having rim means, a support shelf extending generally horizontally inwardly within said rim means and arm means joining said canopy and housing portions, said housing portion being suspended from said canopy portion by said arm means, a second layer of insulative material supported on said shelf beneath said canopy and lampholder means mounted on said shelf on the surface thereof opposite said second insulative layer.
Claim 3
Dependent Claim
67 words
A light fixture as claimed in claim 1 wherein said first canopy portion has a first predetermined dimension wherein said housing portion has a dimension greater than said first canopy portion and wherein said arm means include a plurality of arms extending from said first canopy portion to said rim means of said housing portion for suspending the latter in spaced relation from said first canopy portion.
Claim 4
Dependent Claim
32 words
A light fixture as claimed in claim 1 wherein said canopy and housing portions are of circular shape, said canopy portion having a diameter shorter than the diameter of said housing portion.
Claim 5
Dependent Claim
28 words
A light fixture as claimed in claim 1 further including decorative shade means mounted on said housing portion in covering relation with respect to said lamp holder means.
Claim 6
Dependent Claim
55 words
A light fixture as claimed in claim 4 wherein said rim means includes a first outer rim and a second rim disposed concentrically inwardly thereof, said shelf extending from said inner rim inwardly of said housing portion, one of said inner and outer rims including fastening means for securing said shade to said housing portion.
Claim 7
Dependent Claim
142 words
A light fixture for mounting on a ceiling or the like support surface, including in combination: a pan comprising a circular, saucer-like canopy having a basewall and an upstanding sidewall extending from the periphery of said basewall, said canopy mountable with the free end of said sidewall in contacting engagement with said support surface, a first layer of insulative material received in said canopy disposed between said basewall and said support surface, a housing having outer and inner concentric circular rims, the inner rim defining a support extending radially inwardly therefrom, arm means joining said canopy and housing for suspension of the latter from the former, a second layer of insulative material provided upon said support, lampholder means mounted beneath said support and being suspended downwardly and shade means mounted on said housing in covering relation with respect to said lampholder means.
Claim 8
Dependent Claim
142 words
A light fixture for mounting on a ceiling or the like support surface, including in combination: a pan comprising a circular, saucer-like canopy having a basewall and an upstanding sidewall extending from the periphery of said basewall, said canopy mountable with the free end of said sidewall in contacting engagement with said support surface, a first layer of insulative material received in said canopy disposed between said basewall and said support surface, a housing having outer and inner concentric circular rims, the inner rim defining a support extending radially inwardly therefrom, arm means joining said canopy and housing for suspension of the latter from the former, a second layer of insulative material provided upon said support, lampholder means mounted beneath said support and being suspended downwardly and shade means mounted on said housing in covering relation with respect to said lampholder means.
Claim 9
Dependent Claim
60 words
A light fixture as claimed in claim 6 wherein said second insulative layer is predeterminedly spaced from said canopy and wherein said shade includes an outer sidewall of generally circular configuration, with the free edge of shade received between said outer and inner rims of said housing, one of said rims including fasteners to secure said shade to said housing.
Claim 10
Dependent Claim
28 words
A light fixture as claimed in claim 7 wherein said outer rim includes fasteners engageable with the sidewall of said shade to retain the latter on said housing.
Claim 11
Dependent Claim
34 words
A light fixture as claimed in claim 1 wherein the diameter of said housing and said second layer of insulative material is approximately 1.5 times greater than said canopy and first insulative layer, respectively.
References Cited (Backward Citations)
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) | 1984-11-23 | 1985-05-25 | 1985-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-23 | 1989-05-25 | 1989-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-23 | 1993-05-25 | 1993-11-24 | $7700.00 | Window Closed / Lapsed |