Patent US3142758A successfully refreshed from Google Patents.
US3142758A
Expired / Lapsed
US
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Ultraviolet detector discharge tube and thermal relay circuit
Assignee: McGraw Edison Co
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Filing: 1961-02-01
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Granted: 1964-07-28
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Expires: 1981-02-01
Abstract
No abstract record available.
Inventors
- 👤 John J Dietz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:45
CPC Classifications
G; G01; G01T; G01T7/00; G01T7/12; G01T7/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
AN ULTRAVIOLET DETECTING SYSTEM COMPRISING AN ULTRAVIOLET DETECTOR TUBE HAVING ELECTRODES ADAPTED TO PASS A PULSATING DISCHARGE CURRENT WHEN SUBJECTED TO AN APPLIED PULATING POTENTIAL AND EXCITED BY INCIDENT PHOTONS, CIRCUIT MEANS FOR PROVIDING A PULSATING FIRING VOLTAGE CAPABLE OF PRODUCING A PULSATING GLOW DISCHARGE IN SAID ULTRAVIOLET TUBE WHEN THE TUBE IS EXCITED BY INCIDENT PHOTONS, AND A THERMAL RELAY HAVING A HEATER WINDING CONNECTED IN SAID CIRCUIT MEANS TO CAUSE THE RELAY TO BE OPERATED WHEN SAID ULTRAVIOLET TUBE IS UNDERGOING DISCHARGE.
Claim 2
Dependent Claim
84 words
AN ULTRAVIOLET DETECTING SYSTEM COMPRISING AN ULTRAVIOLET DETECTOR TUBE HAVING ELECTRODES ADAPTED TO PASS A PULSATING DISCHARGE CURRENT WHEN SUBJECTED TO AN APPLIED PULATING POTENTIAL AND EXCITED BY INCIDENT PHOTONS, CIRCUIT MEANS FOR PROVIDING A PULSATING FIRING VOLTAGE CAPABLE OF PRODUCING A PULSATING GLOW DISCHARGE IN SAID ULTRAVIOLET TUBE WHEN THE TUBE IS EXCITED BY INCIDENT PHOTONS, AND A THERMAL RELAY HAVING A HEATER WINDING CONNECTED IN SAID CIRCUIT MEANS TO CAUSE THE RELAY TO BE OPERATED WHEN SAID ULTRAVIOLET TUBE IS UNDERGOING DISCHARGE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |