US3868182A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lamp assembly
Assignee: Xerox Corp
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Filing: 1973-05-29
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Granted: 1975-02-25
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Expires: 1993-05-29
Abstract
Abstract A lamp assembly for use with an arc discharge type lamp employing an external trigger wire to provide the required conductive field to establish threshold voltage for initiating current through the lamp.
Inventors
- 👤 Wayne L Kidd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:36
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/04; G03G15/04036; F; F21; F21V; F21V19/00; F21V19/0075; F21V19/008; F21V19/009
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
149 words
A lamp assembly for flash illuminating a document to be reproduced on a xerographic machine comprising: a reflector; dielectric clamp means provided at each end of said reflector for engagement therewith, said clamp means including resilient lamp tube retaining means, a tubular lamp, having electrical contact surfaces at each end thereof said tubular lamp being retained in said clamp means, in a predetermined position relative to said reflector by said reSilient means, the ends of said lamp extending beyond said clamp means, said lamp being adapted for connection at each end thereof to a source of electrical power, the electrical contact surfaces of said lamp being spaced from said clamp means and said reflector to prevent arcing therebetween; and, a trigger wire positioned along side said lamp parallel to the axis thereof, said wire being located and retained against said tubular lamp between said resilient means and said lamp.
Claim 2
Dependent Claim
149 words
A lamp assembly for flash illuminating a document to be reproduced on a xerographic machine comprising: a reflector; dielectric clamp means provided at each end of said reflector for engagement therewith, said clamp means including resilient lamp tube retaining means, a tubular lamp, having electrical contact surfaces at each end thereof said tubular lamp being retained in said clamp means, in a predetermined position relative to said reflector by said reSilient means, the ends of said lamp extending beyond said clamp means, said lamp being adapted for connection at each end thereof to a source of electrical power, the electrical contact surfaces of said lamp being spaced from said clamp means and said reflector to prevent arcing therebetween; and, a trigger wire positioned along side said lamp parallel to the axis thereof, said wire being located and retained against said tubular lamp between said resilient means and said lamp.
Claim 3
Dependent Claim
32 words
A lamp assembly according to claim 1 wherein said lamp is mounted asymmetrically relative to said reflector, said trigger wire being positioned on the side of said lamp furthest from said reflector.
Claim 4
Dependent Claim
67 words
A lamp assembly according to claim 2, wherein each of said clamp means is provided with a depending flange formed thereon extending below the lower surface of said reflector to provide a dielectric shield on the end of said reflector and thereby increase the arc path distance between said trigger wire and the electrical contact surfaces and said tubular lamp and the end portions of said reflector.
References Cited (Backward Citations)
US3692994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |