US3869606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighting fixture
Assignee: KICON AG
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Filing: 1973-05-09
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Granted: 1975-03-04
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Expires: 1993-05-09
Abstract
Abstract Fluorescent tubes are cooled by contacting the upper part of the cylindrical surface of such tubes with a contact member heat conductively associated with a cooling device. This device preferably consists of tubular contact members having a partcylindrical concave surface for contacting the fluorescent tubes and inserted in a circuit for circulating cooling water through the tubular contact members. These contact members are mounted in a channel-shaped housing, heat conductivity associated therewith, and the fluorescent tubes are mounted in the same housing by spring actuated sockets adapted to urge the fluorescent tubes upwardly into contact with the concave surface of the tubular cooling members.
Inventors
- 👤 Marc Fordsmand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:18
CPC Classifications
F; F21; F21V; F21V29/00; F21V29/50; F21V29/56; F21V29/59; F21V29/502; F21V29/503; F21V29/70; F21V29/74; F21Y; F21Y2103/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
159 words
A lIghting fixture comprising an elongated, downwardly opening housing substantially rectangular in plan and having a top wall and a pair of side walls, a pair of tubular contact members mounted within the housing heat conductively associated with the top wall thereof and having concave part-cylindrical contact faces, a pair of fluorescent tubes mounted within the housing below the tubular contact members with the upper part of their cylindrical surface contacting the contact face of said tubular contact member, said fluorescent tubes being associated with electrical accessories including reactor coils, said accessories being mounted in the housing on the lower side of the top wall intermediate said tubular contact members, a pair of sockets resiliently mounted at either end of the housing for mounting the fluorescent tubes therebetween, said sockets comprising spring means for urging the fluorescent tubes upwardly against the contact faces of the tubular contact members, and means for circulating a coolant through said tubular contact members.
Claim 2
Dependent Claim
159 words
A lIghting fixture comprising an elongated, downwardly opening housing substantially rectangular in plan and having a top wall and a pair of side walls, a pair of tubular contact members mounted within the housing heat conductively associated with the top wall thereof and having concave part-cylindrical contact faces, a pair of fluorescent tubes mounted within the housing below the tubular contact members with the upper part of their cylindrical surface contacting the contact face of said tubular contact member, said fluorescent tubes being associated with electrical accessories including reactor coils, said accessories being mounted in the housing on the lower side of the top wall intermediate said tubular contact members, a pair of sockets resiliently mounted at either end of the housing for mounting the fluorescent tubes therebetween, said sockets comprising spring means for urging the fluorescent tubes upwardly against the contact faces of the tubular contact members, and means for circulating a coolant through said tubular contact members.
Claim 3
Dependent Claim
74 words
A cooling unit for a lighting fixture, as claimed in claim 1, comprising a pair of tubular contact members, a pair of connecting pipes interconnecting said tubular contact members at either end thereof, so as to define a substantially rectangular frame structure and a nipple mounted on said connecting pipes for interconnecting a series of adjacent fixtures, so as to provide a circuit for circulating a coolant through the cooling units of such fixtures.
Claim 4
Dependent Claim
119 words
A lighting fixture comprising an elongated, downwardly opening housing substantially rectangular in plan and having a top wall and a pair of side walls, a contact member defining a concave face mounted to said housing, at least one fluorescent tube mounted in said housing and extending in the lengthwise direction thereof with the cylindrical surface of the tube against the concave face of the contact member, said housing comprising a pair of sockets adjacent the ends thereof for mounting the tube therebetween, said sockets being spring loaded in the direction of the contact member and movable relative to the housing, so as to firmly clamp the cylindrical surface of the tube against the concave face of the contact member.
Claim 5
Dependent Claim
119 words
A lighting fixture comprising an elongated, downwardly opening housing substantially rectangular in plan and having a top wall and a pair of side walls, a contact member defining a concave face mounted to said housing, at least one fluorescent tube mounted in said housing and extending in the lengthwise direction thereof with the cylindrical surface of the tube against the concave face of the contact member, said housing comprising a pair of sockets adjacent the ends thereof for mounting the tube therebetween, said sockets being spring loaded in the direction of the contact member and movable relative to the housing, so as to firmly clamp the cylindrical surface of the tube against the concave face of the contact member.
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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |