US3080119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion tank and air removal unit
Assignee: General Fittings Co
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Filing: 1961-01-23
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Granted: 1963-03-05
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 John J Shutkufski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:47
CPC Classifications
F; F24; F24D; F24D3/00; F24D3/10; F24D3/1008; F24D3/1016; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3084; Y10T137/3115; Y10T137/3118
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
IN A HOT WATER HEATING SYSTEM HAVING HEAT TRANSFER DEVICES THEREIN, THE COMBINATION INCLUDING A BOILER, A CIRCULATING PUMP IN THE SYSTEM, PIPING MEANS INCLUDING A GENERALLY HORIZONTAL PORTION CONNECTING SAID BOILER TO SAID DEVICES AND PUMP, A UNIT SERVING AS AN EXPANSION TANK AND AIR REMOVAL MEANS IN SAID HORIZONTAL PORTION INTERPOSED IN THE PATH OF WATER FLOWING THERETHROUGH AND COMPRISING A CASING, A FLEXIBLE DIAPHRAGM DIVIDING SAID CASING INTO UPPER AND LOWER PARTS AND PROVIDING WITH THE WALL OF THE LOWER PART OF THE CASING A CHAMBER TO CONFINE A PRESSURIZED GAS, A HORIZONTALLY DISPOSED PERFORATED PLATE FIXED IN THE UPPER PART OF THE CASING TO SERVE AS A LIMIT FOR THE MOVEMENT OF SAID DIAPHRAGM INTO SAID UPPER PART, INLET AND OUTLET PORTS IN SAID UPPER PART ABOVE SAID PLATE, HORIZONTALLY ALIGNED SPACED BAFFLES IN SAID UPPER PART IN THE LINE OF FLOW BETWEEN SAID PORTS, MEANS SUPPORTING SAID BAFFLES BY SAID PLATE, AND AN AIR VENT EXTENDING FROM THE HIGH POINT IN SAID UPPER PART.
Claim 2
Dependent Claim
169 words
IN A HOT WATER HEATING SYSTEM HAVING HEAT TRANSFER DEVICES THEREIN, THE COMBINATION INCLUDING A BOILER, A CIRCULATING PUMP IN THE SYSTEM, PIPING MEANS INCLUDING A GENERALLY HORIZONTAL PORTION CONNECTING SAID BOILER TO SAID DEVICES AND PUMP, A UNIT SERVING AS AN EXPANSION TANK AND AIR REMOVAL MEANS IN SAID HORIZONTAL PORTION INTERPOSED IN THE PATH OF WATER FLOWING THERETHROUGH AND COMPRISING A CASING, A FLEXIBLE DIAPHRAGM DIVIDING SAID CASING INTO UPPER AND LOWER PARTS AND PROVIDING WITH THE WALL OF THE LOWER PART OF THE CASING A CHAMBER TO CONFINE A PRESSURIZED GAS, A HORIZONTALLY DISPOSED PERFORATED PLATE FIXED IN THE UPPER PART OF THE CASING TO SERVE AS A LIMIT FOR THE MOVEMENT OF SAID DIAPHRAGM INTO SAID UPPER PART, INLET AND OUTLET PORTS IN SAID UPPER PART ABOVE SAID PLATE, HORIZONTALLY ALIGNED SPACED BAFFLES IN SAID UPPER PART IN THE LINE OF FLOW BETWEEN SAID PORTS, MEANS SUPPORTING SAID BAFFLES BY SAID PLATE, AND AN AIR VENT EXTENDING FROM THE HIGH POINT IN SAID UPPER PART.
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) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |