US3372871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot water heating system
Assignee: AVM ACQUISITION Co A CORP OF
•
Filing: 1966-04-01
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Granted: 1968-03-12
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Expires: 1986-04-01
Abstract
No abstract record available.
Inventors
- 👤 Richard T Pfluger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:23
CPC Classifications
F; F24; F24D; F24D3/00; F24D3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
IN A HEATING SYSTEM, THE COMBINATION OF, A BOILER HAVING A CHAMBER WITHIN WHICH TO HEAT LIQUID, A RADIATING DEVICE FOR TRANSFERRING HEAT FROM THE LIQUID TO THE SURROUNDING ATMOSPHERE AND THEREBY COOLING THE LIQUID, A RESERVOIR OPEN TO THE ATMOSPHERE FOR STORING THE COOLED LIQUID, A CONDUIT LEADING FROM SAID CHAMBER TO SAID RADIATING DEVICE, AND THEN TO SAID RESERVOIR, HEATING MECHANISM ASSOCIATED WITH SAID BOILER FOR HEATING THE LIQUID IN SAID CHAMBER AND FOR INCREASING THE PRESSURE OF THE VAPOR THEREIN WHEREBY THE PRESSURE EXERTED ON THE LIQUID BY THE VAPOR FORCES THE LIQUID IN ONE DIRECTION THROUGH SAID CONDUIT FROM SAID CHAMBER TO SAID RADIATING DEVICE, AND THEN TO THE FLOW OF LIQUID FROM SAID CHAMBER TO DERESPONSE TO THE FLOW OF LIQUID FROM SAID CHAMBER TO DEACTIVATE SAID HEATING MECHANISM WHEREBY THE VAPOR WITHIN SAID CHAMBER COOLS AND CONDENSES TO FORM A VACUUM THEREIN FOR DRAWING THE LIQUID IN THE OPPOSITE DIRECTION THROUGH SAID CONDUIT FROM SAID RESERVOIR TO SAID CHAMBER.
Claim 2
Dependent Claim
165 words
IN A HEATING SYSTEM, THE COMBINATION OF, A BOILER HAVING A CHAMBER WITHIN WHICH TO HEAT LIQUID, A RADIATING DEVICE FOR TRANSFERRING HEAT FROM THE LIQUID TO THE SURROUNDING ATMOSPHERE AND THEREBY COOLING THE LIQUID, A RESERVOIR OPEN TO THE ATMOSPHERE FOR STORING THE COOLED LIQUID, A CONDUIT LEADING FROM SAID CHAMBER TO SAID RADIATING DEVICE, AND THEN TO SAID RESERVOIR, HEATING MECHANISM ASSOCIATED WITH SAID BOILER FOR HEATING THE LIQUID IN SAID CHAMBER AND FOR INCREASING THE PRESSURE OF THE VAPOR THEREIN WHEREBY THE PRESSURE EXERTED ON THE LIQUID BY THE VAPOR FORCES THE LIQUID IN ONE DIRECTION THROUGH SAID CONDUIT FROM SAID CHAMBER TO SAID RADIATING DEVICE, AND THEN TO THE FLOW OF LIQUID FROM SAID CHAMBER TO DERESPONSE TO THE FLOW OF LIQUID FROM SAID CHAMBER TO DEACTIVATE SAID HEATING MECHANISM WHEREBY THE VAPOR WITHIN SAID CHAMBER COOLS AND CONDENSES TO FORM A VACUUM THEREIN FOR DRAWING THE LIQUID IN THE OPPOSITE DIRECTION THROUGH SAID CONDUIT FROM SAID RESERVOIR TO SAID CHAMBER.
References Cited (Backward Citations)
US1629043A
Cited
US1581591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |