US3624387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frameless air-handling fixture lens support
Assignee: Westinghouse Electric Corp
•
Filing: 1969-09-30
•
Granted: 1971-11-30
•
Expires: 1989-09-30
Abstract
Abstract An interior lighting fixture of the air-handling type including a pair of spring-urged lens support members along the lower edge of the fixture sidewalls having outwardly directed flanges on the lower ends thereof which coact with complementary inwardly directed flanges along the length of the frameless lens to support the lens, provide for lens centering with respect to the fixture and for the simple and quick removal of the lens from the fixture. The fixture also includes a lamp holder and a ballast compartment pivotally mounted within the fixture housing to permit access to the ballast elements when the compartment is in its swing-down position.
Inventors
- 👤 William R Eargle Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:12
CPC Classifications
F; F21; F21V; F21V17/00; F21V17/10; F21V17/16; F21V17/164; F21V23/00; F21V23/02; F21Y; F21Y2103/00; F21Y2113/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
160 words
An interior lighting fixture of the fluorescent type comprising in combination; a housing having a top portion and downwardly extending side and end walls defining an open-bottomed optical cavity; light source mounting means mounted within said optical cavity; a pair of lens support means having a flange extension thereon, said lens support means being pivotally mounted adjacent the bottom end of each of said sidewalls and extending for substantially the entire length of said sidewalls; lens means, having complementary flanges thereon extending for the length of said lens means, closing off the open bottom of said optical cavity, said flange extensions of said lens support means coacting with the flanges on said lens means to thereby support said lens in either a closed or open position; and spring means urging said flanges on said lens support means into contact with said flanges on said lens to thereby retain and center said lens in said open bottom of said lamp cavity.
Claim 2
Dependent Claim
160 words
An interior lighting fixture of the fluorescent type comprising in combination; a housing having a top portion and downwardly extending side and end walls defining an open-bottomed optical cavity; light source mounting means mounted within said optical cavity; a pair of lens support means having a flange extension thereon, said lens support means being pivotally mounted adjacent the bottom end of each of said sidewalls and extending for substantially the entire length of said sidewalls; lens means, having complementary flanges thereon extending for the length of said lens means, closing off the open bottom of said optical cavity, said flange extensions of said lens support means coacting with the flanges on said lens means to thereby support said lens in either a closed or open position; and spring means urging said flanges on said lens support means into contact with said flanges on said lens to thereby retain and center said lens in said open bottom of said lamp cavity.
Claim 3
Dependent Claim
43 words
An interior lighting fixture according to claim 1 wherein said flange extensions on said lens support means extend outwardly of said fixture and said complementary flanges on said lens means extend inwardly toward the center of said fixture and overly said flange extensions.
Claim 4
Dependent Claim
36 words
An interior lighting fixture according to claim 2, wherein said spring means urges said lens support means and hence said flange extensions outwardly of said fixture to engage with said complementary flanges on said lens means.
Claim 5
Dependent Claim
45 words
An interior lighting fixture according to claim 1, wherein said light source mounting means includes a ballast mounting compartment, said light source mounting means being pivotally mounted within said housing and swingable down about said pivotal mounting to thereby provide access to said ballast compartment.
Claim 6
Dependent Claim
125 words
An interior lighting fixture of the fluorescent type comprising; a housing having a top portion and downwardly extending side and end walls which define an open-bottomed optical cavity; light source mounting means and light source ballast components mounted within said optical cavity; a pair of substantially L-shaped lens support means pivotally mounted adjacent the bottom end of each of saId sidewalls and extending for substantially the entire length of said sidewalls; flanged lens means having side flanges extending along the length thereof closing off the open bottom of said optical cavity with the bases of said substantially L-shaped lens support means coacting with the flanges on said flanged lens means to thereby support said lens within said opening in either a closed or open position.
Claim 7
Dependent Claim
125 words
An interior lighting fixture of the fluorescent type comprising; a housing having a top portion and downwardly extending side and end walls which define an open-bottomed optical cavity; light source mounting means and light source ballast components mounted within said optical cavity; a pair of substantially L-shaped lens support means pivotally mounted adjacent the bottom end of each of saId sidewalls and extending for substantially the entire length of said sidewalls; flanged lens means having side flanges extending along the length thereof closing off the open bottom of said optical cavity with the bases of said substantially L-shaped lens support means coacting with the flanges on said flanged lens means to thereby support said lens within said opening in either a closed or open position.
Claim 8
Dependent Claim
50 words
An interior lighting fixture according to claim 6 wherein said bases of said substantially L-shaped lens support means extend outwardly of said fixture and said flanges on said flanged lens means extend inwardly toward the center of said fixture and overlie the bases of said substantially L-shaped lens support means.
Claim 9
Dependent Claim
33 words
An interior lighting fixture according to claim 7, wherein said spring means urge said substantially L-shaped lens support means outwardly of said fixture to engage with said flanges on said flanged lens means.
Claim 10
Dependent Claim
38 words
An interior lighting fixture according to claim 5, wherein said light source mounting means and ballast compartment is pivotally mounted to said housing and swingable down about said pivotal mounting to thereby provide access to said ballast compartment.
Claim 11
Dependent Claim
42 words
An interior lighting fixture according to claim 5 wherein holddown spring means are associated with said lens support means and overlie the flanges on said flanged lens means to thereby retain said flanges against the bases of said L-shaped lens support means.
References Cited (Backward Citations)
US2644556A
Cited
US2655396A
Cited
US2912568A
Cited
US3185835A
Cited
US3117729A
Cited
US3210538A
Cited
US3308288A
Cited
US3539802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |