US3170508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating and cooling system
Assignee: Individual
•
Filing: 1962-12-18
•
Granted: 1965-02-23
•
Expires: 1982-12-18
Abstract
No abstract record available.
Inventors
- 👤 Gilbert H Avery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:13
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/06; F24F3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
IN A HEATING AND COOLING SYSTEM, A SOURCE OF HEATING MEDIUM, A HEATING MEDIUM DELIVERY CONDUIT AND A HEATING MEDIUM RETURN CONDUIT RESPECTIVELY LEADING FROM AND LEADING TO SAID SOURCE OF HEATING MEDIUM, A SOURCE OF COOLING MEDIUM, A COOLING MEDIUM DELIVERY CONDUIT AND A COOLING MEDIUM RETURN CONDUIT RESPECTIVELY LEADING FROM AND LEADING TO SAID SOURCE OF COOLING MEDIUM, A COIL, MEANS INCLUDING PASSAGE MEANS BETWEEN SAID COIL AND SAID DELIVERY AND RETURN CONDUITS AND INCLUDING A PAIR OF THREE-WAY VALVE MEANS IN SAID PASSAGE MEANS RESPECTIVELY ADJACENT OPPOSITE ENDS OF SAID COIL FOR SELECTIVELY DIRECTING THE FLOW OF SAID HEATING MEDIUM FROM SAID HEATING MEDIUM DELIVERY CONDUIT THROUGH SAID COIL IN ONE DIRECTION AND INTO SAID HEATING MEDIUM RETURN CONDUIT AND DIRECTING THE FLOW OF SAID COOLING MEDIUM FROM SAID COOLING MEDIUM DELIVERY CONDUIT THROUGH SAID COIL IN THE OPPOSITE DIRECTION AND INTO SAID COOLING MEDIUM RETURN CONDUIT, A PAIR
Claim 2
Dependent Claim
152 words
IN A HEATING AND COOLING SYSTEM, A SOURCE OF HEATING MEDIUM, A HEATING MEDIUM DELIVERY CONDUIT AND A HEATING MEDIUM RETURN CONDUIT RESPECTIVELY LEADING FROM AND LEADING TO SAID SOURCE OF HEATING MEDIUM, A SOURCE OF COOLING MEDIUM, A COOLING MEDIUM DELIVERY CONDUIT AND A COOLING MEDIUM RETURN CONDUIT RESPECTIVELY LEADING FROM AND LEADING TO SAID SOURCE OF COOLING MEDIUM, A COIL, MEANS INCLUDING PASSAGE MEANS BETWEEN SAID COIL AND SAID DELIVERY AND RETURN CONDUITS AND INCLUDING A PAIR OF THREE-WAY VALVE MEANS IN SAID PASSAGE MEANS RESPECTIVELY ADJACENT OPPOSITE ENDS OF SAID COIL FOR SELECTIVELY DIRECTING THE FLOW OF SAID HEATING MEDIUM FROM SAID HEATING MEDIUM DELIVERY CONDUIT THROUGH SAID COIL IN ONE DIRECTION AND INTO SAID HEATING MEDIUM RETURN CONDUIT AND DIRECTING THE FLOW OF SAID COOLING MEDIUM FROM SAID COOLING MEDIUM DELIVERY CONDUIT THROUGH SAID COIL IN THE OPPOSITE DIRECTION AND INTO SAID COOLING MEDIUM RETURN CONDUIT, A PAIR
References Cited (Backward Citations)
US2535892A
Cited
US3069867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |