US3180107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration system and valve assembly
Assignee: Motors Liquidation Co
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Filing: 1962-10-04
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Granted: 1965-04-27
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Expires: 1982-10-04
Abstract
No abstract record available.
Inventors
- 👤 Marshall W Baker
- 👤 Lynn E Waite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:00
CPC Classifications
F; F25; F25B; F25B41/00; F25B41/20; F25B41/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A REFRIGERATION SYSTEM COMPRISING AN EVAPORATOR, A CONTROL VALVE ASSEMBLY INCLUDING A VALVE MEMBER, A COMPRESSOR, A CONDENSER AND AN EXPANSION VALVE CONNECTED IN SERIES IN A CIRCUIT FOR CIRCULATING A REFRIGERANT FLUID, MEANS RESPONSIVE TO PRESSURE IN SAID EVAPORATOR URGING SAID CONTROL VALVE MEMBER TO AN OPEN POSITION, RESILIENT MEANS ARRANGED IN A CHAMBER OF SAID CONTROL VALVE ASSEMBLY TO URGE SAID CONTROL VALVE MEMBER TO A CLOSED POSITION, A SOURCE OF A SECOND FLUID UNDER PRESSURE MODULATION, A LINE CONNECTING SAID SOURCE TO SAID CHAMBER MEANS OPERABLE BY SAID SECOND FLUID ARRANGED TO INCREASE THE CLOSING FORCE OF SAID RESILIENT MEANS AND INCLUDING A MOVABLE ELEMENT CONNECTED TO SAID VALVE MEMBER AND SUBJECTED TO A DIFFERENTIAL PRESSURE INDEPENDENT OF SAID EVAPORATOR PRESSURE.
Claim 2
Dependent Claim
124 words
A REFRIGERATION SYSTEM COMPRISING AN EVAPORATOR, A CONTROL VALVE ASSEMBLY INCLUDING A VALVE MEMBER, A COMPRESSOR, A CONDENSER AND AN EXPANSION VALVE CONNECTED IN SERIES IN A CIRCUIT FOR CIRCULATING A REFRIGERANT FLUID, MEANS RESPONSIVE TO PRESSURE IN SAID EVAPORATOR URGING SAID CONTROL VALVE MEMBER TO AN OPEN POSITION, RESILIENT MEANS ARRANGED IN A CHAMBER OF SAID CONTROL VALVE ASSEMBLY TO URGE SAID CONTROL VALVE MEMBER TO A CLOSED POSITION, A SOURCE OF A SECOND FLUID UNDER PRESSURE MODULATION, A LINE CONNECTING SAID SOURCE TO SAID CHAMBER MEANS OPERABLE BY SAID SECOND FLUID ARRANGED TO INCREASE THE CLOSING FORCE OF SAID RESILIENT MEANS AND INCLUDING A MOVABLE ELEMENT CONNECTED TO SAID VALVE MEMBER AND SUBJECTED TO A DIFFERENTIAL PRESSURE INDEPENDENT OF SAID EVAPORATOR PRESSURE.
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) | 1968-04-26 | 1968-10-26 | 1969-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-26 | 1972-10-26 | 1973-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-26 | 1976-10-26 | 1977-04-27 | $7700.00 | Window Closed / Lapsed |