US3083574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic temperature measurement and control system
Assignee: Bendix Corp
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Filing: 1956-12-12
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Granted: 1963-04-02
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Expires: 1976-12-12
Abstract
No abstract record available.
Inventors
- 👤 George H Messerly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:03
CPC Classifications
G; G01; G01K; G01K13/00; G01K13/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
132 words
AN INSTRUMENT FOR THE MEASUREMENT OF A TEMPERATURE COMPRISING FIRST AND SECOND CONDUITS, BOTH OF WHICH ARE SUPPLIED FROM A SOURCE OF GAS AT A TEMPERATURE TO BE MEASURED, SAID FIRST CONDUIT HAVING TWO FIXED AREA RESTRICTIONS IN SERIES AND THE FIRST OF SAID RESTRICTIONS BEING SO LOCATED THAT THE GAS FLOWING THERETHROUGH IS STABILIZED AT THE TEMPERATURE TO BE MEASURED, SAID SECOND CONDUIT HAVING TWO RESTRICTIONS IN SERIES AND BEING EXPOSED TO A KNOWN TEMPERATURE SUCH THAT THE GAS FLOW THROUGH SAID TWO RESTRICTIONS THEREIN IS MAINTAINED AT SAID KNOWN TEMPERATURE, AND A PRESSURE SENSING DEVICE CONNECTED TO SAID FIRST CONDUIT BETWEEN ITS TWO SAID RESTRICTIONS AND TO SAID SECOND CONDUIT BETWEEN ITS TWO SAID RESTRICTIONS, THE RATIO OF SAID PRESSURES BEING A KNOWN FUNCTION OF SAID TEMPERATURE TO BE MEASURED.
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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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |