Patent US3407663A successfully refreshed from Google Patents.
US3407663A
Expired / Lapsed
US
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Double action thermostat
Assignee: Antioch College
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Filing: 1963-06-14
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Granted: 1968-10-29
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Expires: 1983-06-14
Abstract
No abstract record available.
Inventors
- 👤 Vernet Sergius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:31
CPC Classifications
G; G01; G01K; G01K5/00; G01K5/32; G01K5/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A DOUBLE-ACTION THERMOSTAT HAVING A HOUSING CONTAINING A THERMAL EXPANSIBLE MATERIAL OPERATIVELY CONNECTED TO A POWER MEMBER WHEREIN EXPANSION OF SAID EXPANSIBLE MATERIAL EXERTS A PRESSURE TO MOVE THE CASING AND POWER MEMBER RELATIVE TO EACH OTHER, COMPRISING: A FIRST PISTON, A POWER MEMBER PISTON AFFIXED TO SAID POWER MEMBER, A RESILIENT DEFORMABLE RUBBER DIAPHRAGM MOUNTED TO SAID HOUSING SEALINGLY SEPARATING THE POWER MEMBER PISTON AND FIRST PISTON FROM THE EXPANSIBLE MATERIAL, ONE FACE OF SAID DIAPHRAGM CONTACTING THE EXPANSIBLE MATERIAL, A DEFORMABLE RUBBER PLUG HAVING ONE SIDE THEREOF CONTACTING THE OUTER FACE OF SAID DIAPRAGM AND THE OTHER SIDE CONTACTING SAID FIRST PISTON AND SAID POWER MEMBER PISTON,
Claim 2
Dependent Claim
109 words
A DOUBLE-ACTION THERMOSTAT HAVING A HOUSING CONTAINING A THERMAL EXPANSIBLE MATERIAL OPERATIVELY CONNECTED TO A POWER MEMBER WHEREIN EXPANSION OF SAID EXPANSIBLE MATERIAL EXERTS A PRESSURE TO MOVE THE CASING AND POWER MEMBER RELATIVE TO EACH OTHER, COMPRISING: A FIRST PISTON, A POWER MEMBER PISTON AFFIXED TO SAID POWER MEMBER, A RESILIENT DEFORMABLE RUBBER DIAPHRAGM MOUNTED TO SAID HOUSING SEALINGLY SEPARATING THE POWER MEMBER PISTON AND FIRST PISTON FROM THE EXPANSIBLE MATERIAL, ONE FACE OF SAID DIAPHRAGM CONTACTING THE EXPANSIBLE MATERIAL, A DEFORMABLE RUBBER PLUG HAVING ONE SIDE THEREOF CONTACTING THE OUTER FACE OF SAID DIAPRAGM AND THE OTHER SIDE CONTACTING SAID FIRST PISTON AND SAID POWER MEMBER PISTON,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |