US3238780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ambient compensated bimetal elements
Assignee: Robertshaw Controls Co
•
Filing: 1963-03-01
•
Granted: 1966-03-08
•
Expires: 1983-03-01
Abstract
No abstract record available.
Inventors
- 👤 Donald A Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:09
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/20; G01K1/24; H; H01; H01H; H01H37/00; H01H37/02; H01H37/10; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
AN AMBIENT COMPENSATED BIMETAL ELEMENT FOR DETECTING TEMPERATURE CHANGES ADJACENT ONE PART OF THE ELEMENT COMPRISING: A UNITARY BIMETAL SHEET HAVING TWO LONGITUDINALLY ECTENDING SLITS THEREIN TO FORM TWO OUTER LEGA AND AN INNER LEG CONNECTED BY A RELATIVELY NARROW WEB; SAID INNER LEG BEING BENT RELATIVE TO SAID OUTER LETS TO FORM MUTUALLY REVERSED INNER AND OUTER SEGMENTS, SELECTED PORTIONS OF WHICH REMAIN IN FIXED RELATION TO EACH OTHER IRRESPECTIVE OF CHANGE IN THE AMBIENT TEMPERATRURE; SAID REVERSED SEGMENTS BEING SPATIALLY SEPARATED FROM EACH OTHER SUCH THAT THE PLACING OF EITHER ONE OF SAID SEGMENTS IN THE PROXIMITY OF A LOCAL SOURCE OF HEAT OR COLD WILL PRODUCE A NON-COMPENSATED RELATIVE MOVEMENT BETWEEN SAID SELECTED SEGMENT PORTIONS INDICATIVE OF THE TEMPERATURE OF SUCH LOCAL SOURCE.
Claim 2
Dependent Claim
126 words
AN AMBIENT COMPENSATED BIMETAL ELEMENT FOR DETECTING TEMPERATURE CHANGES ADJACENT ONE PART OF THE ELEMENT COMPRISING: A UNITARY BIMETAL SHEET HAVING TWO LONGITUDINALLY ECTENDING SLITS THEREIN TO FORM TWO OUTER LEGA AND AN INNER LEG CONNECTED BY A RELATIVELY NARROW WEB; SAID INNER LEG BEING BENT RELATIVE TO SAID OUTER LETS TO FORM MUTUALLY REVERSED INNER AND OUTER SEGMENTS, SELECTED PORTIONS OF WHICH REMAIN IN FIXED RELATION TO EACH OTHER IRRESPECTIVE OF CHANGE IN THE AMBIENT TEMPERATRURE; SAID REVERSED SEGMENTS BEING SPATIALLY SEPARATED FROM EACH OTHER SUCH THAT THE PLACING OF EITHER ONE OF SAID SEGMENTS IN THE PROXIMITY OF A LOCAL SOURCE OF HEAT OR COLD WILL PRODUCE A NON-COMPENSATED RELATIVE MOVEMENT BETWEEN SAID SELECTED SEGMENT PORTIONS INDICATIVE OF THE TEMPERATURE OF SUCH LOCAL SOURCE.
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |