Patent US3233822A successfully refreshed from Google Patents.
US3233822A
Expired / Lapsed
US
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Refrigeration compressor
Assignee: Copeland Refrigeration Corp
•
Filing: 1963-04-22
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Granted: 1966-02-08
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Expires: 1983-04-22
Abstract
No abstract record available.
Inventors
- 👤 Russell E Comstock
- 👤 Edwin L Gannaway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:43
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02; F25B31/00; F25B31/02; F25B49/022; Y; Y10; Y10S; Y10S417/00; Y10S417/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN COMBINATION, A REFRIGERANT COMPRESSOR, AN ELECTRIC MOTOR FOR DRIVING SAID COMPRESSOR, A SUPPLY CIRCUIT FOR SAID MOTOR, AN ELECTRICAL PROTECTOR IN SAID SUPPLY CIRCUIT AND ADAPTED TO OPEN SAID SUPPLY CIRCUIT IN RESPONSE TO EXCESSIVE HEAT OR TEMPERATURE, A SUCTION CHAMBER CONNECTED TO THE INLET SIDE OF SAID COMPRESSOR AND IN HEATCONDUCTIVE RELATION WITH SAID PROTECTOR, A DISCHARGE CHAMBER CONNECTED TO THE OUTLET SIDE OF SAID COMPRESSOR, AND A NORMALLY CLOSED VALVE CONNECTING SAID CHAMBER AND ADAPTED TO OPEN IN RESPONSE TO THE ATTAINMENT OF A PREDETERMINED PRESSURE DIFFERENTIAL BETWEEN SAID CHAMBERS TO PERMIT FLOW FROM SAID DISCHARGE TO SAID SUCTION CHAMBER, WHEREBY HEAT CARRIED BY THE DISCHARGE GASES PASSING THROUGH SAID VALVE WILL ACT UPON SAID PROTECTOR.
Claim 2
Dependent Claim
119 words
IN COMBINATION, A REFRIGERANT COMPRESSOR, AN ELECTRIC MOTOR FOR DRIVING SAID COMPRESSOR, A SUPPLY CIRCUIT FOR SAID MOTOR, AN ELECTRICAL PROTECTOR IN SAID SUPPLY CIRCUIT AND ADAPTED TO OPEN SAID SUPPLY CIRCUIT IN RESPONSE TO EXCESSIVE HEAT OR TEMPERATURE, A SUCTION CHAMBER CONNECTED TO THE INLET SIDE OF SAID COMPRESSOR AND IN HEATCONDUCTIVE RELATION WITH SAID PROTECTOR, A DISCHARGE CHAMBER CONNECTED TO THE OUTLET SIDE OF SAID COMPRESSOR, AND A NORMALLY CLOSED VALVE CONNECTING SAID CHAMBER AND ADAPTED TO OPEN IN RESPONSE TO THE ATTAINMENT OF A PREDETERMINED PRESSURE DIFFERENTIAL BETWEEN SAID CHAMBERS TO PERMIT FLOW FROM SAID DISCHARGE TO SAID SUCTION CHAMBER, WHEREBY HEAT CARRIED BY THE DISCHARGE GASES PASSING THROUGH SAID VALVE WILL ACT UPON SAID PROTECTOR.
References Cited (Backward Citations)
US3080103A
Cited
US2946203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |