Patent US3177929A successfully refreshed from Google Patents.
US3177929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant subcooling unit
Assignee: Individual
•
Filing: 1962-02-13
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Granted: 1965-04-13
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Expires: 1982-02-13
Abstract
No abstract record available.
Inventors
- 👤 John H Jennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:34
CPC Classifications
F; F25; F25B; F25B40/00; F25B40/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
127 words
A PREASSEMBLED REFRIGERANT SUBCOOLING UNIT ADAPTED TO BE UNIVERSALLY INSTALLABLE INTO EXISTING REFRIGERATION CIRCUITS AND SYSTEMS COMPRISING, IN COMBINATION, A HOUSING, A REFRIGERANT CONDUIT WITHIN SAID HOUSING HAVING AN INLET PORTION AND AN OUTLET PORTION, A COOLING MEDIUM CONDUIT WITHIN SAID HOUSING HAVING AN INLET PORTION AND AN OUTLET PORTION AND IN HEAT EXCHANGING RELATION TO SAID REFRIGERANT CONDUIT, AN ADJUSTABLE VALVE HAVING A VARIABLE OPERATING RANGE OPERATIVELY INTERPOSED IN SAID COOLING MEDIUM CONDUIT CONTROLLING COOLING FLUID FLOW THERETHROUGH, REFRIGERANT CHARACTERISTIC SENSING MEANS OPERATIVELY ASSOCIATED WITH AND CONTROLLING OPERATION OF SAID VALVE ASSOCIATED WITH SAID REFRIGERANT CONDUIT SENSING THE REFRIGERANT CHARACTERISTICS WITHIN THE REFRIGERANT CONDUIT, AND CONTROL MEANS ACCESSIBLE FROM THE EXTERIOR OF SAID HOUSING OPERATIVELY ASSOCIATED WITH SAID VALVE ADJUSTING THE OPERATING RANGE OF SAID 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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |