US3231194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wax type thermostat
Assignee: Individual
•
Filing: 1964-03-20
•
Granted: 1966-01-25
•
Expires: 1984-03-20
Abstract
No abstract record available.
Inventors
- 👤 Kuze Yoshikazu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:06
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/021; G05D23/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A THERMOSTAT COMPRISING, AN OUTER HEAT-SENSITIVE CHAMBER, AN OPEN-ENDED SLEEVE MEANS SPACED WITHIN THE WALLS OF SAID CHAMBER, A RUBBER-LIKE PISTON SLIDABLY INSERTED IN SAID SLEEVE MEANS AND HAVING A LOW COEFFICIENT OF FRICTION WITH RESPECT TO SAID SLEEVE MEANS, WAX-LIKE SUBSTANCE SEALED WITHIN SAID SPACE BETWEEN SAID CHAMBER AND SAID SLEEVE MEANS, AND BENEATH THE OPEN END OF SAID SLEEVE MEANS, TO COMMUNICATE WITH THE LOWER END OF SAID PISTON, AND A PUSH-ROD INSERTED IN SAID RUBBER-LIKE PISTON, WHEREBY UPON BEING HEATED, SAID WAX-LIKE SUBSTANCE BECOMES MORE LIQUID AND EXPANDS TO EXERT A COMPRESSIVE FORCE ON THE LOWER END OF SAID RUBBER-LIKE PISTON TO THUS SQUEEZE OUT SAID PUSH-ROD.
Claim 2
Dependent Claim
110 words
A THERMOSTAT COMPRISING, AN OUTER HEAT-SENSITIVE CHAMBER, AN OPEN-ENDED SLEEVE MEANS SPACED WITHIN THE WALLS OF SAID CHAMBER, A RUBBER-LIKE PISTON SLIDABLY INSERTED IN SAID SLEEVE MEANS AND HAVING A LOW COEFFICIENT OF FRICTION WITH RESPECT TO SAID SLEEVE MEANS, WAX-LIKE SUBSTANCE SEALED WITHIN SAID SPACE BETWEEN SAID CHAMBER AND SAID SLEEVE MEANS, AND BENEATH THE OPEN END OF SAID SLEEVE MEANS, TO COMMUNICATE WITH THE LOWER END OF SAID PISTON, AND A PUSH-ROD INSERTED IN SAID RUBBER-LIKE PISTON, WHEREBY UPON BEING HEATED, SAID WAX-LIKE SUBSTANCE BECOMES MORE LIQUID AND EXPANDS TO EXERT A COMPRESSIVE FORCE ON THE LOWER END OF SAID RUBBER-LIKE PISTON TO THUS SQUEEZE OUT SAID PUSH-ROD.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |