US3082345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric lamp
Assignee: Westinghouse Electric Corp
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Filing: 1960-04-28
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Granted: 1963-03-19
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Expires: 1980-04-28
Abstract
No abstract record available.
Inventors
- 👤 Arthur A Bottone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:55
CPC Classifications
H; H01; H01K; H01K7/00; H01K7/02; G; G03; G03B; G03B21/00; G03B21/14; G03B21/20; G03B21/2006; G03B21/202
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AN ELECTRIC INCANDESCENT PROJECTION LAMP COMPRISING, A SEALED ENVELOPE, A CONCENTRATED FILAMENT OF PLANAR CONFIGURATION SUPPORTED WITHIN SAID ENVELOPE, AND A THIN METAL CONCAVE REFLECTOR SUPPORTED ADJACENT SAID FILAMENT WITH ITS CONCAVE REFLECTOR SUPPORTED ADJACENT SAID FILAMENT THEREOF, SAID REFLECTOR BEING FABRICATED FROM REFRACTORY METAL THE REFLECTIVITY WHEREOF INCREASES WITH TEMPERATURE, AND THE THERMAL MASS OF SAID REFLECTOR AND THE SPACING BETWEEN SAID REFLECTOR AND FILAMENT BEING SUCH THAT SAID REFLECTOR INCANDESCES WHEN THE FILAMENT IS ENERGIZED.
Claim 2
Dependent Claim
77 words
AN ELECTRIC INCANDESCENT PROJECTION LAMP COMPRISING, A SEALED ENVELOPE, A CONCENTRATED FILAMENT OF PLANAR CONFIGURATION SUPPORTED WITHIN SAID ENVELOPE, AND A THIN METAL CONCAVE REFLECTOR SUPPORTED ADJACENT SAID FILAMENT WITH ITS CONCAVE REFLECTOR SUPPORTED ADJACENT SAID FILAMENT THEREOF, SAID REFLECTOR BEING FABRICATED FROM REFRACTORY METAL THE REFLECTIVITY WHEREOF INCREASES WITH TEMPERATURE, AND THE THERMAL MASS OF SAID REFLECTOR AND THE SPACING BETWEEN SAID REFLECTOR AND FILAMENT BEING SUCH THAT SAID REFLECTOR INCANDESCES WHEN THE FILAMENT IS ENERGIZED.
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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |