US3225243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color lamp with spectral filter around filament
Assignee: Individual
•
Filing: 1962-10-29
•
Granted: 1965-12-21
•
Expires: 1982-10-29
Abstract
No abstract record available.
Inventors
- 👤 William C Dauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:48
CPC Classifications
H; H01; H01K; H01K1/00; H01K1/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A LAMP, COMPRISING: AN ENCLOSING SEALED ENVELOPE HAVING ELECTRICAL CONNECTIONS; A PLURALITY OF LAMP CARTRIDGES IN SAID ENVELOPE AND CONNECTED TO RESPECTIVE ONES OF SAID ELECTRICAL CONNECTIONS; SAID CARTRIDGES EACH HAVING A FILAMENT WOUND IN A HELICAL PATTERN ON A SUPPORT ALONG AN AXIS; A TRANSLUCENT, CYLINDRICAL TUBE SPACED FROM SAID FILAMENT; DIFFERENT MULTIFILM SPECTRAL SELECTOR COATINGS ON SAID TUBE CAUSING A PLURALITY OF OUTPUT COLORS; HELICALLYORIENTED, LIGHT RAY LIMITING MEANS RADIATING AWAY FROM SAID AXIS AND TOWARD SAID TUBE AND RESTRICTING THE LIGHT FROM SAID FILAMENT INCIDENT TO SAID COATINGS TO A SPECIFIC ANGULAR RANGE TO PROVIDE THE CONTROLLED COLOR FROM EACH TUBE; AND A VARIABLE ELECTRICAL INPUT CONTROL MEANS FOR CARTRIDGES OF DIFFERENT COLORS ENABLING THE COMPOSITE OVERALL LAMP COLOR TO BE VARIED BY VARIATION OF THE ELECTRICAL INPUT TO DIFFERENT COLOR CARTRIDGES.
Claim 2
Dependent Claim
135 words
A LAMP, COMPRISING: AN ENCLOSING SEALED ENVELOPE HAVING ELECTRICAL CONNECTIONS; A PLURALITY OF LAMP CARTRIDGES IN SAID ENVELOPE AND CONNECTED TO RESPECTIVE ONES OF SAID ELECTRICAL CONNECTIONS; SAID CARTRIDGES EACH HAVING A FILAMENT WOUND IN A HELICAL PATTERN ON A SUPPORT ALONG AN AXIS; A TRANSLUCENT, CYLINDRICAL TUBE SPACED FROM SAID FILAMENT; DIFFERENT MULTIFILM SPECTRAL SELECTOR COATINGS ON SAID TUBE CAUSING A PLURALITY OF OUTPUT COLORS; HELICALLYORIENTED, LIGHT RAY LIMITING MEANS RADIATING AWAY FROM SAID AXIS AND TOWARD SAID TUBE AND RESTRICTING THE LIGHT FROM SAID FILAMENT INCIDENT TO SAID COATINGS TO A SPECIFIC ANGULAR RANGE TO PROVIDE THE CONTROLLED COLOR FROM EACH TUBE; AND A VARIABLE ELECTRICAL INPUT CONTROL MEANS FOR CARTRIDGES OF DIFFERENT COLORS ENABLING THE COMPOSITE OVERALL LAMP COLOR TO BE VARIED BY VARIATION OF THE ELECTRICAL INPUT TO DIFFERENT COLOR CARTRIDGES.
References Cited (Backward Citations)
US1649975A
Cited
US2007945A
Cited
FR746249A
Cited
US2097679A
Cited
US2412496A
Cited
US2545896A
Cited
GB778438A
Cited
GB834087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |