Patent US3705302A successfully refreshed from Google Patents.
US3705302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminaire
Assignee: General Electric Co
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Filing: 1971-03-12
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Granted: 1972-12-05
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Expires: 1991-03-12
Abstract
Abstract Luminaire for indoor industrial use has an optical assembly having a diameter substantially greater than its height and adapted to be mounted at relatively low height above the floor. The optical assembly includes a dish shaped refractor sealed at its periphery to a reflector and a lamp mounted therein with its base down. The optical assembly is hingedly connected at one side to an upper ballast housing to enable the optical assembly to be swung down to provide access to its interior for servicing the lamp.
Inventors
- 👤 John R Judge
- 👤 Robert G Kilpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:40
CPC Classifications
F; F21; F21V; F21V29/00; F21V29/50; F21V29/70; F21V29/73; F21S; F21S8/00; F21S8/04; F21S8/06; F21V17/00; F21V17/10; F21V17/105; F21V25/00; F21V25/02; F21V25/04; F21V29/502; F21V29/505; F21V29/74; F21V29/77; F21V23/00; F21V23/02
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
122 words
A luminaire comprising, in combination, a ballast housing containing electrical operating means, an optical assembly comprising a reflector having an open bottom and a dish-shaped refractor having an open top, said reflector and said refractor being connected to each other at their peripheries with said refractor arranged below and closing the bottom of said reflector, said optical assembly being substantially greater in diameter than in height, a lamp having a base and mounted in said optical assembly with its base down, said optical assembly being detachably connected to said ballast housing for movement between a closed operative position against said ballast housing and an open inoperative position spaced from said ballast housing for providing access to the interior of said optical assembly.
Claim 2
Dependent Claim
122 words
A luminaire comprising, in combination, a ballast housing containing electrical operating means, an optical assembly comprising a reflector having an open bottom and a dish-shaped refractor having an open top, said reflector and said refractor being connected to each other at their peripheries with said refractor arranged below and closing the bottom of said reflector, said optical assembly being substantially greater in diameter than in height, a lamp having a base and mounted in said optical assembly with its base down, said optical assembly being detachably connected to said ballast housing for movement between a closed operative position against said ballast housing and an open inoperative position spaced from said ballast housing for providing access to the interior of said optical assembly.
Claim 3
Dependent Claim
20 words
A luminaire as defined in claim 1, said lamp being elongated and being arranged substantially entirely within said optical assembly.
Claim 4
Dependent Claim
37 words
A luminaire as defined in claim 2, bracket means secured within said optical assembly having a support portion arranged adjacent said refractor, and a lamp socket arranged in said socket support portion for receiving said lamp base.
Claim 5
Dependent Claim
20 words
A luminaire as defined in claim 1, the height of said reflector being about twice the height of said refractor.
Claim 6
Dependent Claim
32 words
A luminaire as defined in claim 1, the overall diameter of said optical assembly being substantially greater than the overall height of the combined ballast housing and optical assembly in operative position.
Claim 7
Dependent Claim
45 words
A luminaire as defined in claim 1, including hinge means at one side of said optical assembly for swingably connecting the same to said ballast housing, and latch means circumferentially spaced from said hinge means for detachably connecting said optical assembly to said ballast housing.
Claim 8
Dependent Claim
56 words
A luminaire as defined in claim 3, said bracket means comprising a generally V-shaped member having opposite upper arm portions and a lower apex portion, said bracket member being connected at its upper arm portions to the upper portion of said reflector, said lower apex portion being formed with a seat for receiving said lamp socket.
Claim 9
Dependent Claim
17 words
A luminaire as defined in claim 1, said refractor being composed of a light-transmitting synthetic resin material.
Claim 10
Dependent Claim
48 words
A luminaire as defined in claim 1, including separable electrical connecting means on adjacent portions of said optical assembly and said ballast housing for automatically electrically connecting and dis-connecting said lamp and said electrical operating means upon movement of said optical assembly into operative and inoperative positions, respectively.
Claim 11
Dependent Claim
29 words
A luminaire as defined in claim 1, said reflector and said refractor having mating peripheral rim portions and being joined together at said rim portions in permanent sealed relation.
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |