US2839645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photocell structure
Assignee: Clairex Corp
•
Filing: 1954-06-14
•
Granted: 1958-06-17
•
Expires: 1974-06-14
Abstract
No abstract record available.
Inventors
- 👤 Frank A Hester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:15
CPC Classifications
G; G01; G01J; G01J5/00; G01J5/52; G01J5/54; F; F23; F23N; F23N5/00; F23N5/02; F23N5/08; G01J5/10; G01J5/20; G01J5/22; G01J5/24; H; H10; H10F; H10F30/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PHOTOCELL COMPRISING A TRANSPARENT PLASTIC BODY, A PHOTOCONDUCTIVE CRYSTAL EMBEDDED IN SAID BODY AND EXPOSED TO RAYS TRANSMITTED THROUGH ONE END OF THE BODY, A TRANSPARENT MASS OF SEMIFLUID MATERIAL DISPOSED BETWEEN THE CRYSTAL AND BODY, A PAIR OF HEAT RESISTANT ELECTRODES IN CONTACT WITH THE CRYSTAL, AND A PLURALITY OF LEAD WIRES ELECTRICALLY CONNECTED TO SAID ELECTRODES, SAID MASS SERVING AS A BUFFER TO INSULATE THE CRYSTAL FROM MECHANICAL SHOCKS AND STRAINS TRANSMITTED THROUGH THE BODY.
Claim 2
Dependent Claim
78 words
A PHOTOCELL COMPRISING A TRANSPARENT PLASTIC BODY, A PHOTOCONDUCTIVE CRYSTAL EMBEDDED IN SAID BODY AND EXPOSED TO RAYS TRANSMITTED THROUGH ONE END OF THE BODY, A TRANSPARENT MASS OF SEMIFLUID MATERIAL DISPOSED BETWEEN THE CRYSTAL AND BODY, A PAIR OF HEAT RESISTANT ELECTRODES IN CONTACT WITH THE CRYSTAL, AND A PLURALITY OF LEAD WIRES ELECTRICALLY CONNECTED TO SAID ELECTRODES, SAID MASS SERVING AS A BUFFER TO INSULATE THE CRYSTAL FROM MECHANICAL SHOCKS AND STRAINS TRANSMITTED THROUGH THE BODY.
References Cited (Backward Citations)
US2001672A
Cited
US2183256A
Cited
US2310365A
Cited
US2432303A
Cited
US2659682A
Cited
US2668867A
Cited
US2742550A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |