Patent US3307028A successfully refreshed from Google Patents.
US3307028A
Expired / Lapsed
US
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Spotlights
Assignee: STRAND ELECTRIC AND ENGINEERIN
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Filing: 1964-09-10
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Granted: 1967-02-28
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Expires: 1984-09-10
Abstract
No abstract record available.
Inventors
- 👤 Bentham Frederick Percy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:52
CPC Classifications
F; F21; F21V; F21V11/00; F21V11/08; F21V11/16; F21V11/18; F21W; F21W2131/00; F21W2131/40; F21W2131/406
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A SPOTLIGHT COMPRISING IN COMBINATION: (A) A HOUSING, (B) A LAMP HOLDER MOUNTED IN SAID HOUSING AND ADAPTED TO SUPPORT A LAMP, (C) A PROJECTION LENS SPACED FROM SAID LAMP HOUSING AND HAVING ITS OPTIC AXIS ALIGNED WITH THE POSITION OCCUPIED BY SAID LAMP, (D) A BEAM-DEFINING GATE POSITIONED ABOUT SAID OPTIC AXIS INTERMEDIATE AND SPACED FROM SAID LAMP HOLDER AND SAID LENS, AND (E) A BEAM-SOFTENING GATE POSITIONED ABOUT SAID OPTIC AXIS SPACED FROM SAID BEAM-DEFINING GATE, SAID BEAMSOFTENING GATE BEING CONSTRUCTED AND ADAPTED FOR MOVEMENT IN A PLANE NORMAL TO SAID OPTIC AXIS INTO ANY ONE OR MORE SELECTED PORTIONS ONLY OF A BEAM PASSING THROUGH BEAM-DEFINING GATE.
Claim 2
Dependent Claim
110 words
A SPOTLIGHT COMPRISING IN COMBINATION: (A) A HOUSING, (B) A LAMP HOLDER MOUNTED IN SAID HOUSING AND ADAPTED TO SUPPORT A LAMP, (C) A PROJECTION LENS SPACED FROM SAID LAMP HOUSING AND HAVING ITS OPTIC AXIS ALIGNED WITH THE POSITION OCCUPIED BY SAID LAMP, (D) A BEAM-DEFINING GATE POSITIONED ABOUT SAID OPTIC AXIS INTERMEDIATE AND SPACED FROM SAID LAMP HOLDER AND SAID LENS, AND (E) A BEAM-SOFTENING GATE POSITIONED ABOUT SAID OPTIC AXIS SPACED FROM SAID BEAM-DEFINING GATE, SAID BEAMSOFTENING GATE BEING CONSTRUCTED AND ADAPTED FOR MOVEMENT IN A PLANE NORMAL TO SAID OPTIC AXIS INTO ANY ONE OR MORE SELECTED PORTIONS ONLY OF A BEAM PASSING THROUGH BEAM-DEFINING GATE.
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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |