Patent US3204461A successfully refreshed from Google Patents.
US3204461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal actuators
Assignee: Individual
•
Filing: 1963-02-25
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Granted: 1965-09-07
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Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Szekely George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:24
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/121; G05D23/02; G05D23/021; Y; Y10; Y10S; Y10S236/00; Y10S236/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN ATHERMAL ACTUATOR OF THE CHARACTER DESCRIBED, ADAPTED TO BE PLACED IN AN ENVIRONMENT RECEIVING HEAT, A CASING OF HEAT-RESISTIVE MATERIAL HAVING A WALL WHICH HAS A FIRST STRUCTURE OF RELATIVELY HIGH HEAT-CONDUTIVE QUALITY EXPOSED OUTSIDE SAID CASING AND EXTENDING INTO SAID CSING, A MEMBER OF RELATIVELY HIGH HEAT-CONDUCTIVE QUALITY WITHIN SAID CASING, SPACED FROM SAID FIRST STRUCTURE, A SECOND STRUCTURE OF RELATIVELY LOW HEAT-CONDUCTIVE QUALITY POSITIONED INSIDE THE SPACE BETWEEN AND CONTACTING OPPOSITE SURFACES RESPECTIVELY OF SAID FIRST STRUCTURE AND MEMBER; SAID SECOND STRUCTURE CONSTITUTING THE ONLY PATH FOR HEAT TO TRAVEL FROM THE FIRST STRUCTURE TO SAID MEMBER, AND A MEANS CARRIED BY SAID MEMBER, HAVING THE CHARACTER THAT A MOVEMENT THEREOF WILL OCCUR WHEN HEATED TO A PREDETERMINED TEMPERATURE.
Claim 2
Dependent Claim
122 words
IN ATHERMAL ACTUATOR OF THE CHARACTER DESCRIBED, ADAPTED TO BE PLACED IN AN ENVIRONMENT RECEIVING HEAT, A CASING OF HEAT-RESISTIVE MATERIAL HAVING A WALL WHICH HAS A FIRST STRUCTURE OF RELATIVELY HIGH HEAT-CONDUTIVE QUALITY EXPOSED OUTSIDE SAID CASING AND EXTENDING INTO SAID CSING, A MEMBER OF RELATIVELY HIGH HEAT-CONDUCTIVE QUALITY WITHIN SAID CASING, SPACED FROM SAID FIRST STRUCTURE, A SECOND STRUCTURE OF RELATIVELY LOW HEAT-CONDUCTIVE QUALITY POSITIONED INSIDE THE SPACE BETWEEN AND CONTACTING OPPOSITE SURFACES RESPECTIVELY OF SAID FIRST STRUCTURE AND MEMBER; SAID SECOND STRUCTURE CONSTITUTING THE ONLY PATH FOR HEAT TO TRAVEL FROM THE FIRST STRUCTURE TO SAID MEMBER, AND A MEANS CARRIED BY SAID MEMBER, HAVING THE CHARACTER THAT A MOVEMENT THEREOF WILL OCCUR WHEN HEATED TO A PREDETERMINED TEMPERATURE.
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |