US3168805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal power element
Assignee: ROSTRA ENGINEERED COMPONENTS Inc A CORP OF CT
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Filing: 1963-05-03
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Granted: 1965-02-09
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Expires: 1983-05-03
Abstract
No abstract record available.
Inventors
- 👤 Fleury Jack Esmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:46
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/025; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1919; G05D23/1921
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A HEAT-ACTUATED POWER ELEMENT HAVING A CHAMBERFORMING CASING, A LOADED POWER MEMBER EXTENDING FROM SAID CASING, AND A THERMAL EXPANSION SUBSTANCE WITHIN THE CHAMBER: THE IMPROVEMENT COMPRISING THE THERMAL EXPANSION SUBSTANCE FILLING ONLY A PREDETERMINED FRACTIONAL PORTION OF THE CHAMBER IN A LIQUID CONDITION WHEN THE POWER ELEMENT IS BELOW ITS OPERATING TEMPERATURE RANGE; THE POWER MEMBER HAVING A LOADING WHICH PREVENTS SUBSTANTIAL POWER MEMBER MOTION UNTIL THE CHAMBER PRESSURE REACHES A PREDETERMINED VALUE; AND THE EXPANSION LIQUID SUBSTANCE HAVING AN EXPANSION UP TO ITS CRITICAL TEMPERATURE WHICH PRODUCES A CHAMBER PRESSURE LESS THAN SAID PREDETERMINED PRESSURE, WHEREBY SUBSTANTIAL MOTION IS PRODUCED ONLY AS THE CRITICAL TEMPERATURE IS APPROACHED.
Claim 2
Dependent Claim
110 words
IN A HEAT-ACTUATED POWER ELEMENT HAVING A CHAMBERFORMING CASING, A LOADED POWER MEMBER EXTENDING FROM SAID CASING, AND A THERMAL EXPANSION SUBSTANCE WITHIN THE CHAMBER: THE IMPROVEMENT COMPRISING THE THERMAL EXPANSION SUBSTANCE FILLING ONLY A PREDETERMINED FRACTIONAL PORTION OF THE CHAMBER IN A LIQUID CONDITION WHEN THE POWER ELEMENT IS BELOW ITS OPERATING TEMPERATURE RANGE; THE POWER MEMBER HAVING A LOADING WHICH PREVENTS SUBSTANTIAL POWER MEMBER MOTION UNTIL THE CHAMBER PRESSURE REACHES A PREDETERMINED VALUE; AND THE EXPANSION LIQUID SUBSTANCE HAVING AN EXPANSION UP TO ITS CRITICAL TEMPERATURE WHICH PRODUCES A CHAMBER PRESSURE LESS THAN SAID PREDETERMINED PRESSURE, WHEREBY SUBSTANTIAL MOTION IS PRODUCED ONLY AS THE CRITICAL TEMPERATURE IS APPROACHED.
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) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |