Patent US2600022A successfully refreshed from Google Patents.
Patent US4213170A successfully refreshed from Google Patents.
US4213170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reflector lamp with lens having light-modifying coating
Assignee: GTE Sylvania Inc
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Filing: 1978-02-06
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Granted: 1980-07-15
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Expires: 1998-02-06
Abstract
Abstract An electric lamp comprises a curved reflector having a double ended tungsten-halogen lamp disposed therein. A lens is fastened to the front of the reflector by means of a metal retaining ring. The lens has a light-modifying coating on its inner surface.
Inventors
- 👤 Stephen F. Kimball
- 👤 Roy C. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:21
CPC Classifications
F; F21; F21S; F21S41/00; F21S41/20; F21S41/29; F21S41/10; F21S41/12; F21S41/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
An electric lamp comprising: a curved reflector having a circular front and a peripheral edge thereat; a double ended tungsten halogen lamp disposed within the curved reflector; and a circular lens, having a light-modifying coating on the inner surface thereof and having a peripheral edge, fastened to the circular front of the reflector by means of a split metal ring that encircles said edges of the reflector and lens and clamps them together, said split metal ring being essentially U shaped and bent into a circle, one leg of the U bearing against the back of the peripheral edge of the reflector and the other leg of the U bearing against the front of the peripheral edge of the lens.
Claim 2
Dependent Claim
120 words
An electric lamp comprising: a curved reflector having a circular front and a peripheral edge thereat; a double ended tungsten halogen lamp disposed within the curved reflector; and a circular lens, having a light-modifying coating on the inner surface thereof and having a peripheral edge, fastened to the circular front of the reflector by means of a split metal ring that encircles said edges of the reflector and lens and clamps them together, said split metal ring being essentially U shaped and bent into a circle, one leg of the U bearing against the back of the peripheral edge of the reflector and the other leg of the U bearing against the front of the peripheral edge of the lens.
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) | 1983-07-15 | 1984-01-14 | 1984-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-15 | 1988-01-14 | 1988-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-15 | 1992-01-14 | 1992-07-15 | $7700.00 | Window Closed / Lapsed |