Patent US4469212A successfully refreshed from Google Patents.
US3237296A
Expired / Lapsed
US
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Method of making a thermostatic control device
Assignee: Robertshaw Controls Co
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Filing: 1962-10-08
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Granted: 1966-03-01
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Expires: 1982-10-08
Abstract
No abstract record available.
Inventors
- 👤 Weber Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:53
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/06; F23N5/067; G; G05; G05D; G05D23/00; G05D23/01; G05D23/12; G05D23/125; G05D23/126; G05D23/127; G05D23/128; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49348; Y10T29/49826; Y10T29/49877
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
THE METHOD OF PRODUCING A TEMPERATURE SENSITIVE DEVICE COMPRISING THE STEPS OF NESTING ONE CUP-SHAPED DIAPHRAGM WITHIN A SECOND CUP-SHAPED DIAPHRAGM, SEALING TOGETHER THE OUTER EDGES OF SAID DIAPHRAGMS TO FORM AN EXPANSIBLE CHAMBER THEREBETWEEN, EACH OF SAID DIAPHRAGMS BEING CENTRALLY APERTURED, ATTACHING A CAPILLARY TUBE OUTWARDLY FROM THE FIRST OF SAID DIAPHRAGMS CENTRALLY THEREOF AND IN COMMUNICATION WITH THE APERTURE THEREIN, SEALING THE OUTER END OF SAID CAPILLARY TUBE, ATTACHING A TUBULAR EXTENSION OUTWARDLY FROM THE SECOND OF SAID DIAPHRAGMS AND IN COMMUNICATION WITH THE APERTURE THEREIN, INTRODUCING A TEMPERATURE SENSITIVE FLUID THROUGH SAID TUBULAR EXTENSION TO FILL SAID CAPILLARY TUBE, SAID EXPANSIBLE CHAMBER AND SAID TUBULAR EXTENSION, AND THEREAFTER SEALING SAID TUBULAR EXTENSION BY WELDING A STEEL BALL OVER THE OPEN END THEREOF SO THAT SAID BALL FORMS A SEAL AT SAID OPEN END OF SAID TUBULAR EXTENSION AND AN OUTWARDLY PROJECTING MOTION TRANSMITTING MEMBER FOR SAID TEMPERATURE SENSITIVE DEVICE.
Claim 2
Independent Claim
152 words
THE METHOD OF PRODUCING A TEMPERATURE SENSITIVE DEVICE COMPRISING THE STEPS OF NESTING ONE CUP-SHAPED DIAPHRAGM WITHIN A SECOND CUP-SHAPED DIAPHRAGM, SEALING TOGETHER THE OUTER EDGES OF SAID DIAPHRAGMS TO FORM AN EXPANSIBLE CHAMBER THEREBETWEEN, EACH OF SAID DIAPHRAGMS BEING CENTRALLY APERTURED, ATTACHING A CAPILLARY TUBE OUTWARDLY FROM THE FIRST OF SAID DIAPHRAGMS CENTRALLY THEREOF AND IN COMMUNICATION WITH THE APERTURE THEREIN, SEALING THE OUTER END OF SAID CAPILLARY TUBE, ATTACHING A TUBULAR EXTENSION OUTWARDLY FROM THE SECOND OF SAID DIAPHRAGMS AND IN COMMUNICATION WITH THE APERTURE THEREIN, INTRODUCING A TEMPERATURE SENSITIVE FLUID THROUGH SAID TUBULAR EXTENSION TO FILL SAID CAPILLARY TUBE, SAID EXPANSIBLE CHAMBER AND SAID TUBULAR EXTENSION, AND THEREAFTER SEALING SAID TUBULAR EXTENSION BY WELDING A STEEL BALL OVER THE OPEN END THEREOF SO THAT SAID BALL FORMS A SEAL AT SAID OPEN END OF SAID TUBULAR EXTENSION AND AN OUTWARDLY PROJECTING MOTION TRANSMITTING MEMBER FOR SAID TEMPERATURE SENSITIVE DEVICE.
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |