Patent US3303572A successfully refreshed from Google Patents.
US3303572A
Expired / Lapsed
US
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Assignee: California Institute Research Foundation
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Filing: 1965-04-12
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Granted: 1967-02-14
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Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Thad Vreeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:50
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A DIAMETER GAUGE, COMPRISING: (A) A HOUSING HAVING AT LEAST ONE RADIAL GUIDE BORE AND AN ANNULAR CHAMBER INTERSECTING THE GUIDE BORE; (B) A RADIALLY MOVABLE PROBE ELEMENT MOUNTED IN SAID GUIDE BORE AND BRIDGING SAID CHAMBER AND HAVING A SENSING END; (C) A CURVED SPRING STRIP FITTED WITHIN SAID ANNULAR CHAMBER AND HAVING A FREE END ENGAGING SAID MOVABLE PROBE ELEMENT TO URGE SAID PROBE ELEMENT RADIALLY, WHEREBY SAID SPRING STRIP FLEXES IN CORRESPONDENCE TO RADIAL POSITIONS OF SAID PROBE ELEMENT; (D) ELECTRICAL STRAIN GAUGE MEANS MOUNTED ON SAID SPRING STRIP TO SENSE FLEXED CONDITIONS THEREOF; (E) AND AN ELECTRICAL CIRCUIT UTILIZING SAID STRAIN GAUGE MEANS FOR TRANSLATING THE FLEXED CONDITIONS OF SAID SPRING STRIP INTO DIAMETRICAL MEASUREMENTS.
Claim 2
Dependent Claim
119 words
A DIAMETER GAUGE, COMPRISING: (A) A HOUSING HAVING AT LEAST ONE RADIAL GUIDE BORE AND AN ANNULAR CHAMBER INTERSECTING THE GUIDE BORE; (B) A RADIALLY MOVABLE PROBE ELEMENT MOUNTED IN SAID GUIDE BORE AND BRIDGING SAID CHAMBER AND HAVING A SENSING END; (C) A CURVED SPRING STRIP FITTED WITHIN SAID ANNULAR CHAMBER AND HAVING A FREE END ENGAGING SAID MOVABLE PROBE ELEMENT TO URGE SAID PROBE ELEMENT RADIALLY, WHEREBY SAID SPRING STRIP FLEXES IN CORRESPONDENCE TO RADIAL POSITIONS OF SAID PROBE ELEMENT; (D) ELECTRICAL STRAIN GAUGE MEANS MOUNTED ON SAID SPRING STRIP TO SENSE FLEXED CONDITIONS THEREOF; (E) AND AN ELECTRICAL CIRCUIT UTILIZING SAID STRAIN GAUGE MEANS FOR TRANSLATING THE FLEXED CONDITIONS OF SAID SPRING STRIP INTO DIAMETRICAL MEASUREMENTS.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |