US3289429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controls for refrigeration systems having air cooled condensers
Assignee: Westinghouse Electric Corp
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Filing: 1965-06-29
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Granted: 1966-12-06
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Expires: 1985-06-29
Abstract
No abstract record available.
Inventors
- 👤 Charles N Beard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:23
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/02; F25B49/027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN A REFRIGERATION SYSTEM COMPRISING A COMPRESSOR, AN AIR COOLED CONDENSER COIL, A DISCHARGE GAS TUBE CONNECTING SAID COIL TO SAID COMPRESSOR, AND EXPANSION DEVICE, A LIQUID TUBE CONNECTING SAID COIL TO SAID DEVICE, AND EVAPORATOR COIL CONNECTED TO SAID DEVICE, AND A SUCTION GAS TUBE CONNECTING SAID EVAPORATOR COIL TO SAID COMPRESSOR, SAID SUCTION GAS TUBE CONTAINING A LOW PRESSURE CUT-OFF HAVING A SWITCH WHICH OPENS AT ABNORMALLY LOW SUCTION GAS PRESSURES, SAID COMPRESSOR HAVING AN ELECTRIC DRIVING MOTOR, SAID MOTOR HAVING A STARTER RELAY , ELECTRIC SUPPLY CONNECTION, SAID RELAY HAVING A SWITCH FOR CONNECTING SAID MOTOR TO SAID CONNECTIONS, A CONTROL SWITCH, AND MEANS CONNECTING SAID CONTROL SWITCH, SAID SWITCH OF SAID CUT-OUT AND SAID RELAY IN SERIES TO SAID CONNECTIONS, THE COMBINA-
Claim 2
Dependent Claim
126 words
IN A REFRIGERATION SYSTEM COMPRISING A COMPRESSOR, AN AIR COOLED CONDENSER COIL, A DISCHARGE GAS TUBE CONNECTING SAID COIL TO SAID COMPRESSOR, AND EXPANSION DEVICE, A LIQUID TUBE CONNECTING SAID COIL TO SAID DEVICE, AND EVAPORATOR COIL CONNECTED TO SAID DEVICE, AND A SUCTION GAS TUBE CONNECTING SAID EVAPORATOR COIL TO SAID COMPRESSOR, SAID SUCTION GAS TUBE CONTAINING A LOW PRESSURE CUT-OFF HAVING A SWITCH WHICH OPENS AT ABNORMALLY LOW SUCTION GAS PRESSURES, SAID COMPRESSOR HAVING AN ELECTRIC DRIVING MOTOR, SAID MOTOR HAVING A STARTER RELAY , ELECTRIC SUPPLY CONNECTION, SAID RELAY HAVING A SWITCH FOR CONNECTING SAID MOTOR TO SAID CONNECTIONS, A CONTROL SWITCH, AND MEANS CONNECTING SAID CONTROL SWITCH, SAID SWITCH OF SAID CUT-OUT AND SAID RELAY IN SERIES TO SAID CONNECTIONS, THE COMBINA-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |