Patent US3714099A successfully refreshed from Google Patents.
Patent US3092977A successfully refreshed from Google Patents.
US3092977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control apparatus for low temperature refrigeration system
Assignee: Union Carbide Corp
•
Filing: 1959-11-17
•
Granted: 1963-06-11
•
Expires: 1979-11-17
Abstract
No abstract record available.
Inventors
- 👤 Ransom P Skinner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:07
CPC Classifications
F; F25; F25D; F25D29/00; F25D29/001
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A REFRIGERATING SYSTEM FOR COOLING AN INFRA-RED DETECTION CELL WHICH COMPRISES A COOLING HEAD FOR MOUNTING ADJACENT TO THE DETECTION CELL, A FIRST CONDUIT FOR CARRYING LIQUID REFRIGERANT DIRECTLY TO THE COOLING HEAD, WHERE IT IS VAPORIZED AND A SECOND CONDUIT FOR CARRYING VAPORIZED REFRIGERANT AWAY FROM THE COOLING HEAD, VALVE MEANS IN SAID SECOND CONDUIT FOR CONTROLLING THE FLOW OF REFRIGERANT IN THE SYSTEM, A TEMPERATURE SENSING DEVICE ADJACENT TO THE COOLING HEAD, CIRCUIT MEANS ASSOCIATED WITH SAID SENSING DEVICE FOR DEVELOPING A SIGNAL PROPORTIONAL TO THE TEMPERATURE OF THE SENSING DEVICE, AND MEANS FOR UTILIZING SUCH SIGNAL TO OPERATE THE VALVE MEANS, SAID TEMPERATURE SENSING DEVICE COMPRISING A THERMISTOR LOCATED IN THE SECOND CONDUIT BETWEEN THE COOLING HEAD AND THE VALVE MEANS, AND HEATING MEANS FOR HEATING THE THERMISTOR WHEN THE VALVE MEANS IS CLOSED.
Claim 2
Dependent Claim
137 words
A REFRIGERATING SYSTEM FOR COOLING AN INFRA-RED DETECTION CELL WHICH COMPRISES A COOLING HEAD FOR MOUNTING ADJACENT TO THE DETECTION CELL, A FIRST CONDUIT FOR CARRYING LIQUID REFRIGERANT DIRECTLY TO THE COOLING HEAD, WHERE IT IS VAPORIZED AND A SECOND CONDUIT FOR CARRYING VAPORIZED REFRIGERANT AWAY FROM THE COOLING HEAD, VALVE MEANS IN SAID SECOND CONDUIT FOR CONTROLLING THE FLOW OF REFRIGERANT IN THE SYSTEM, A TEMPERATURE SENSING DEVICE ADJACENT TO THE COOLING HEAD, CIRCUIT MEANS ASSOCIATED WITH SAID SENSING DEVICE FOR DEVELOPING A SIGNAL PROPORTIONAL TO THE TEMPERATURE OF THE SENSING DEVICE, AND MEANS FOR UTILIZING SUCH SIGNAL TO OPERATE THE VALVE MEANS, SAID TEMPERATURE SENSING DEVICE COMPRISING A THERMISTOR LOCATED IN THE SECOND CONDUIT BETWEEN THE COOLING HEAD AND THE VALVE MEANS, AND HEATING MEANS FOR HEATING THE THERMISTOR WHEN THE VALVE MEANS IS CLOSED.
References Cited (Backward Citations)
US1658187A
Cited
US2083611A
Cited
US2453584A
Cited
US2496816A
Cited
US2475755A
Cited
US2635225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-10 | 1966-12-10 | 1967-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-10 | 1970-12-10 | 1971-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-10 | 1974-12-10 | 1975-06-11 | $7700.00 | Window Closed / Lapsed |