Patent US3218450A successfully refreshed from Google Patents.
US3218450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminaire
Assignee: Westinghouse Electric Corp
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Filing: 1963-05-24
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Granted: 1965-11-16
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Expires: 1983-05-24
Abstract
No abstract record available.
Inventors
- 👤 Donald E Husby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:43
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/08; F21V; F21V19/00; F21V19/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
IN A LUMINAIRE THE COMBINTION COMPRISING: A GENERALLY CYLINDRICAL LAMP SOCKET, A SUPPORT FOR SAID LAMP SOCKET, AN INVERTED DISHED REFLECTOR HAVING AN APERTURE AT ONE END THEREOF THROUGH WHICH SAID SOCKET PROJECTS INTO SAID REFLECTOR, A CAVITY IN SAID LAMP SOCKET AT THE LONGITUDINAL END THEREOF WHICH PROJECTS INTO SAID REFLECTOR, SAID CAVITY RECEIVING AND SUPPORTING THE BASE OF A LAMP WHICH IS POSITIONED WITHIN SAID REFLECTOR, THE CENTERLINE OF SAID CAVITY BEING SLIGHTLY ANGULARLY DISPLACED FROM THE CENTERLINE OF SAID LAMP SOCKET, SAID LAMP SOCKET BEING ROTATABLY MOUNTED ON SAID SUPPORT ABOUT THE LONGITUDINAL CENTER AXIS OF SAID LAMP SOCKET TO VARY THE POSITION OF THE CENTERLINE OF SAID CAVITY AND SAID LAMP WITH RESPECT TO SAID REFLECTOR, WHICH VARIES THE LIGHT DISTRIBUTION CHARACTERISTICS OF SAID LUMINAIRE.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |