US4063682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportional stroke automatic temperature control system
Assignee: Texas Instruments Inc
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Filing: 1974-08-29
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Granted: 1977-12-20
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Expires: 1994-08-29
Abstract
Abstract This invention relates to an automatic temperature control system for automobiles and improved components thereof. The control system operates on the proportional stroke principle and comprises an in-car air sensing tube biased with ambient air; a sensor in an aspirator at the end of the tube; a moving pivot operated directly by the output of the sensor; and a feedback control valve operated by the moving pivot for driving a vacuum-assist motor, the output stroke of which operates the various electrical and vacuum functions of the heater-air conditioning system.
Inventors
- 👤 John W. Orcutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:40
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00485; B60H1/00642; B60H1/00814; G; G05; G05D; G05D23/00; G05D23/185; G05D23/19; G05D23/1925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2550907A
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US2789543A
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US3033539A
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US3727837A
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US3856201A
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US3877638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-19 | 1981-06-20 | 1981-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-19 | 1985-06-20 | 1985-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-19 | 1989-06-20 | 1989-12-20 | $7700.00 | Window Closed / Lapsed |