Patent US3289431A successfully refreshed from Google Patents.
US3289431A
Expired / Lapsed
US
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Refrigeration system capacity control with pilot operated regulating valve
Assignee: Borg Warner Corp
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Filing: 1964-06-04
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Granted: 1966-12-06
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Expires: 1984-06-04
Abstract
No abstract record available.
Inventors
- 👤 William J Haley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:48
CPC Classifications
F; F04; F04C; F04C28/00; F04C28/24; F25; F25B; F25B31/00; F25B41/00; F25B41/20; F25B41/22; F25B49/00; F25B49/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN AN AUTOMOTIVE AIR CONDITIONING SYSTEM INCLUDING A COMPRESSOR, AN EVAPORATOR, AND CONDENSER CONNECTED IN A CLOSED CIRCUIT, SAID COMPRESSOR BEING DRIVEN BY AN INTERNAL COMBUSTION ENGINE HAVING AN INTAKE MANIFOLD, A CAPACITY CONTROL SYSTEM INCLUDING A VALVE BETWEEN SAID EVAPORATOR AND SAID COMPRESSOR FOR CONTROLLING THE FLOW OF SUCTION GAS TO SAID COMPRESSOR; MEANS FOR ADJUSTING THE SETTING OF SAID VALVE INCLUDING AN OPERATOR WHICH IS RESPONSIVE BOTH TO EVAPORATOR PRESSURE AND AN ADJUSTABLE CONTROL PRESSURE; CONDUIT MEANS CONNECTING SAID ENGINE INTAKE MANIFOLD TO SAID COPERATOR TO SUPPLY SAID CONTROL PRESSURE AND AN ADJUSTABLE CONSTANT PRESSURE REGULATING VALVE.
Claim 2
Dependent Claim
99 words
IN AN AUTOMOTIVE AIR CONDITIONING SYSTEM INCLUDING A COMPRESSOR, AN EVAPORATOR, AND CONDENSER CONNECTED IN A CLOSED CIRCUIT, SAID COMPRESSOR BEING DRIVEN BY AN INTERNAL COMBUSTION ENGINE HAVING AN INTAKE MANIFOLD, A CAPACITY CONTROL SYSTEM INCLUDING A VALVE BETWEEN SAID EVAPORATOR AND SAID COMPRESSOR FOR CONTROLLING THE FLOW OF SUCTION GAS TO SAID COMPRESSOR; MEANS FOR ADJUSTING THE SETTING OF SAID VALVE INCLUDING AN OPERATOR WHICH IS RESPONSIVE BOTH TO EVAPORATOR PRESSURE AND AN ADJUSTABLE CONTROL PRESSURE; CONDUIT MEANS CONNECTING SAID ENGINE INTAKE MANIFOLD TO SAID COPERATOR TO SUPPLY SAID CONTROL PRESSURE AND AN ADJUSTABLE CONSTANT PRESSURE REGULATING VALVE.
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 |