US3165659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rectangular beam electric incandescent lamp
Assignee: Westinghouse Electric Corp
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Filing: 1962-03-08
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Granted: 1965-01-12
•
Expires: 1982-03-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Bottone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:25
CPC Classifications
F; F21; F21S; F21S41/00; F21S41/20; F21S41/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
AN INCANDESCENT ELECTRIC LAMP COMPRISING, A SUBSTANTIALLY PARABOLOIDAL REFLECTOR MEMBER, A CONCENTRATED FILAMENT OF LINEAR CONFIGURATION SUPPORTED APPROXIMATELY AT THE FOCUS OF SAID REFLECTOR MEMBER, SAID FILAMENT EXTENDING TRANSVERSELY OF THE AXIS OF REVOLUTION OF SAID REFLECTOR MEMBER AND COMPRISING A PAIR OF COILED SEGMENTS JOINED BY AN OPEN SEGMENT THAT IS APPROXIMATELY CENTERED AT THE FOCUS OF SAID REFLECTOR MEMBER, AND A LIGHT-TRANSMITTING LENS SEALING THE OPENING OF SAID REFLECTOR MEMBER AND HAVING ONE GROUP OF FLUTES THAT EXTEND IN A DIRECTION PARALLEL TO SAID FILAMENT AND ANOTHER GROUP OF FLUTES THAT EXTEND IN A DIRECTION NORMAL TO SAID FILAMENT, SAID FLUTS BEING SUPERIMPOSED ON SAID LENS AND BEING OF SUCH CONFIGURATION THAT THEY DIRECT THE LIGHT FROM SAID FILAMENT AND REFLECTOR MEMBER, WHEN SAID FILAMENT IS ENERGIZED, INTO A BEAM OF LIGHT HAVING A RECTANGULARSHAPED BEAM PATTERN OF PREDETERMINED DIMENSIONS AND SUBSTANTIALLY UNIFORM INTENSITY.
Claim 2
Dependent Claim
146 words
AN INCANDESCENT ELECTRIC LAMP COMPRISING, A SUBSTANTIALLY PARABOLOIDAL REFLECTOR MEMBER, A CONCENTRATED FILAMENT OF LINEAR CONFIGURATION SUPPORTED APPROXIMATELY AT THE FOCUS OF SAID REFLECTOR MEMBER, SAID FILAMENT EXTENDING TRANSVERSELY OF THE AXIS OF REVOLUTION OF SAID REFLECTOR MEMBER AND COMPRISING A PAIR OF COILED SEGMENTS JOINED BY AN OPEN SEGMENT THAT IS APPROXIMATELY CENTERED AT THE FOCUS OF SAID REFLECTOR MEMBER, AND A LIGHT-TRANSMITTING LENS SEALING THE OPENING OF SAID REFLECTOR MEMBER AND HAVING ONE GROUP OF FLUTES THAT EXTEND IN A DIRECTION PARALLEL TO SAID FILAMENT AND ANOTHER GROUP OF FLUTES THAT EXTEND IN A DIRECTION NORMAL TO SAID FILAMENT, SAID FLUTS BEING SUPERIMPOSED ON SAID LENS AND BEING OF SUCH CONFIGURATION THAT THEY DIRECT THE LIGHT FROM SAID FILAMENT AND REFLECTOR MEMBER, WHEN SAID FILAMENT IS ENERGIZED, INTO A BEAM OF LIGHT HAVING A RECTANGULARSHAPED BEAM PATTERN OF PREDETERMINED DIMENSIONS AND SUBSTANTIALLY UNIFORM INTENSITY.
References Cited (Backward Citations)
US2177217A
Cited
US2912610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-01-12 | 1968-07-13 | 1969-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-01-12 | 1972-07-13 | 1973-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-01-12 | 1976-07-13 | 1977-01-12 | $7700.00 | Window Closed / Lapsed |