Patent US3242687A successfully refreshed from Google Patents.
US3242687A
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Refrigeration system using polyphase expansion valve assembly
Assignee: Motors Liquidation Co
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Filing: 1963-11-08
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Granted: 1966-03-29
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Expires: 1983-11-08
Abstract
No abstract record available.
Inventors
- 👤 Marshall W Baker
- 👤 Paul K Beatenbough
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:31
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/30; F25B41/31; F25B41/33; F25B41/335; Y; Y10; Y10T; Y10T137/00; Y10T137/1842; Y10T137/1939; Y10T137/2012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A REFRIGERATION SYSTEM INCLUDING AN EVAPORATOR, A COMPRESSOR, A CONDENSER AND A POLYPHASE EXPANSION VALVE ASSEMBLY CONNECTED IN THAT ORDER IN A CLOSED CIRCUIT, SAID VALVE ASSEMBLY HAVING A BODY WITH A SUPPLY PORT CONNECTED TO SAID CONDENSER AND AN OUTLET PORT CONNECTED TO SAID EVAPORATOR, TWO ALIGNED VALVE BORES IN SAID BODY EACH CONNECTING SAID PORTS, A VALVE MEMBER SLIDABLE IN ONE OF SAID BORES, A ROD FIXED TO SAID VALVE MEMBER AND SLIDABLE IN SAID BODY, A DIAPHRAGM FIXED TO SAID ROD WITH ONE SIDE EXPOSED TO PRESSURE IN SAID OUTLET PORT AND THE OTHER SIDE TO AMBIENT PRESSURE, AND RESILIENT MEANS INCLUDING A SPRING AND BELLOWS ARRANGEMENT MOUNTED TO ACT ON SAID DIAPHRAGM TO COMPENSATE FOR AMBIENT PRESSURE FLUCTUATION.
Claim 2
Dependent Claim
122 words
A REFRIGERATION SYSTEM INCLUDING AN EVAPORATOR, A COMPRESSOR, A CONDENSER AND A POLYPHASE EXPANSION VALVE ASSEMBLY CONNECTED IN THAT ORDER IN A CLOSED CIRCUIT, SAID VALVE ASSEMBLY HAVING A BODY WITH A SUPPLY PORT CONNECTED TO SAID CONDENSER AND AN OUTLET PORT CONNECTED TO SAID EVAPORATOR, TWO ALIGNED VALVE BORES IN SAID BODY EACH CONNECTING SAID PORTS, A VALVE MEMBER SLIDABLE IN ONE OF SAID BORES, A ROD FIXED TO SAID VALVE MEMBER AND SLIDABLE IN SAID BODY, A DIAPHRAGM FIXED TO SAID ROD WITH ONE SIDE EXPOSED TO PRESSURE IN SAID OUTLET PORT AND THE OTHER SIDE TO AMBIENT PRESSURE, AND RESILIENT MEANS INCLUDING A SPRING AND BELLOWS ARRANGEMENT MOUNTED TO ACT ON SAID DIAPHRAGM TO COMPENSATE FOR AMBIENT PRESSURE FLUCTUATION.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |