Patent US4587600A successfully refreshed from Google Patents.
US4587600A
Expired / Lapsed
US
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Lighting fixture
Assignee: Advanced Lighting Technologies Inc
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Filing: 1985-04-30
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Granted: 1986-05-06
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Expires: 2005-04-30
Abstract
Abstract A lighting fixture in the form of a support frame having top and bottom walls that are interconnected with end support pieces and that have open sides through which the light is dispersed. A series of three elongated fluorescent lamps are mounted in the support frame supported between end support pieces, a translucent cover in two pieces is disposed about the support frame over the respective open sides. Mirrors are disposed in the support frame including a top mirror on the frame top wall and the bottom mirror on the frame bottom wall. The combination of properly positioned lamps and mirrors provides light output that is uniformly dispersed through the covers. In one embodiment, an exit sign is mounted under the fixture and a slot is provided for directing a light path directly to the side.
Inventors
- 👤 John Morten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:54
CPC Classifications
G; G09; G09F; G09F13/00; F; F21; F21S; F21S8/00; F21S8/04; F21S8/06; F21V; F21V15/00; F21V15/01; F21V23/00; F21V23/04; F21V23/0442; F21V7/00; F21V7/0025; F21V7/04; F21V7/05; F21Y; F21Y2103/00; G02; G02B; G02B6/00; G02B6/0001; G02B6/0011; G02B6/0066; G02B6/007; G02B6/0071; G02B6/0081; G02B6/0086; G02B6/0091; Y; Y10; Y10S; Y10S362/00; Y10S362/812
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
112 words
A lighting fixture comprising; a support frame having top and bottom walls interconnected with end support pieces and defining an illuminating compartment therebetween, said support frame having open sides, at least one elongated lamp disposed in said illuminating compartment and supported between said end support pieces, means for enabling excitation of the lamp, translucent cover means disposed about said support frame over the open sides thereof, and mirror means disposed in the support frame adjacent said lamp and including a top mirror on the frame top wall and a bottom mirror on the frame bottom wall, whereby the light output from the illuminating compartment is uniformly dispersed through the translucent cover means.
Claim 2
Dependent Claim
112 words
A lighting fixture comprising; a support frame having top and bottom walls interconnected with end support pieces and defining an illuminating compartment therebetween, said support frame having open sides, at least one elongated lamp disposed in said illuminating compartment and supported between said end support pieces, means for enabling excitation of the lamp, translucent cover means disposed about said support frame over the open sides thereof, and mirror means disposed in the support frame adjacent said lamp and including a top mirror on the frame top wall and a bottom mirror on the frame bottom wall, whereby the light output from the illuminating compartment is uniformly dispersed through the translucent cover means.
Claim 3
Dependent Claim
23 words
A lighting fixture as set forth in claim 1 comprising a plurality of lamps supported in the illuminating compartment in spaced relationship therebetween.
Claim 4
Dependent Claim
51 words
A lighting fixture as set forth in claim 2 wherein the number of lamp comprise at least three disposed in parallel and in a triangular pattern having two lamps equally spaced from one of the mirrors and the third lamp spaced more closely to the other mirror than the one mirror.
Claim 5
Dependent Claim
38 words
A lighting fixture as set forth in claim 3 wherein said third lamp is disposed at a center line of the mirrors and the first and second lamps are disposed on either side of the center line, respectively.
Claim 6
Dependent Claim
30 words
A lighting fixture as set forth in claim 4 wherein the two lamps are equally spaced from the bottom mirror while the third lamp is closer to the top mirror.
Claim 7
Dependent Claim
15 words
A lighting fixture as set forth in claim 5 wherein the mirrors are all planar.
Claim 8
Dependent Claim
39 words
A lighting fixture as set forth in claim 1 wherein the translucent cover means comprises separate light-diffusing covers, one disposed on one open side of the frame and the other disposed on the other open side of the frame.
Claim 9
Dependent Claim
27 words
A lighting fixture as set forth in claim 7 in combination with a sign means and means supporting the sign means from the support frame bottom wall.
Claim 10
Dependent Claim
37 words
A lighting fixture as set forth in claim 8 wherein said bottom wall has a slot for enabling support of the sign means and providing a light transmission path from the illuminating compartment to the sign means.
Claim 11
Dependent Claim
37 words
A lighting fixture as set forth in claim 9 wherein the sign means has a top support hinge and pin means supporting the hinge with the pin means disposed in a side slot of the bottom wall.
Claim 12
Dependent Claim
31 words
A lighting fixture as set forth in claim 10 wherein the covers have ends that cover the bottom wall slot to prevent the sign means from dislodging from the support frame.
Claim 13
Dependent Claim
27 words
A lighting fixture as set forth in claim 1 wherein the mirrors are each planar with the mirrors disposed facing each other and into the illuminating compartment.
Claim 14
Dependent Claim
32 words
A lighting fixture as set forth in claim 12 wherein the bottom mirror and bottom wall each have a slot therein for enabling illumination of a sign supported below the support frame.
Claim 15
Dependent Claim
36 words
A lighting fixture as set forth in claim 12 wherein the sign has a top support hinge and pin means supporting the hinge with the pin means disposed in a side slot of the bottom wall.
Claim 16
Dependent Claim
30 words
A lighting fixture as set forth in claim 14 wherein the covers have ends that cover the bottom wall slot to prevent the sign from dislodging from the support frame.
Claim 17
Dependent Claim
99 words
A lighting fixture comprising; a support frame having top and bottom walls interconnected with end support pieces and defining an illuminating compartment therebetween, said support frame having open sides through which the primary illumination occurs, at least one elongated lamp disposed in said illuminating compartment and supported between said end support pieces, means for enabling excitation of the lamp, translucent cover means disposed about said support frame over the open sides thereof, a sign, a means supporting the sign from the support frame, said support frame bottom wall having slot means enabling light transmission for illumination of said sign.
Claim 18
Dependent Claim
99 words
A lighting fixture comprising; a support frame having top and bottom walls interconnected with end support pieces and defining an illuminating compartment therebetween, said support frame having open sides through which the primary illumination occurs, at least one elongated lamp disposed in said illuminating compartment and supported between said end support pieces, means for enabling excitation of the lamp, translucent cover means disposed about said support frame over the open sides thereof, a sign, a means supporting the sign from the support frame, said support frame bottom wall having slot means enabling light transmission for illumination of said sign.
Claim 19
Dependent Claim
54 words
A light fixture as set forth in claim 16 including mirror means disposed in the support frame adjacent said lamp and including a top mirror on the frame top wall and a bottom mirror on the frame bottom wall, said bottom mirror also having a slot for enabling light transmission to illuminate said sign.
Claim 20
Dependent Claim
76 words
A light fixture as set forth in claim 16 comprising at least three lamps disposed in parallel and in a triangular pattern having two lamps equally spaced from one of the mirrors and the third lamp spaced more closely to the other mirror than the one mirror wherein the third lamp is disposed at a center line of the mirrors and the first and second lamps are disposed on either side of the center line, respectively.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |