Patent US3274693A successfully refreshed from Google Patents.
US3274693A
Expired / Lapsed
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Method and apparatus for roundness measurement
Assignee: Bendix Corp
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Filing: 1965-02-04
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Granted: 1966-09-27
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Expires: 1985-02-04
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Witzke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:02
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/28; G01B7/282
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A ROUNDNESS GAGE FOR MEASURING THE RADIAL DEVIATION OF OBJECTS COMPRISING: A FIRST THREE PRONGED V-ANGLE DEVICE HAVING A PREDETERMINED INCLUDED ANGLE, A SECOND THREE PRONGED V-ANGLE DEVICE HAVING A PREDETERMINED INCLUDED ANGLE DIFFERENT THAN THE INCLUDED ANGLE OF SAID FIRST DEVICE, RECIPROCABLY MOUNTED RELATIVE TO SAID FIRST DEVICE, FIRST AND SECOND DISPLACEMENT TRANSDUCERS RESPECTIVELY MOUNTED IN FIXED ANGULAR RELATION TO SAID FIRST AND SECOND DEVICES ADAPTED TO MEASURE THE RADIAL DISPLACEMENT OF THE PERIPHERY OF SAID OBJECTS RELATIVE TO SAID DEVICES, AND MEANS CONNECTED TO SAID TRANSDUCERS FOR FACTORING THE OUTPUTS THEREFROM AND COMBINING SAID OUTPUTS TO PROVIDE A SINGLE OUTPUT INDICATIVE OF THE ACTUAL RADIAL DEVIATION OF SAID OBJECTS.
Claim 2
Dependent Claim
111 words
A ROUNDNESS GAGE FOR MEASURING THE RADIAL DEVIATION OF OBJECTS COMPRISING: A FIRST THREE PRONGED V-ANGLE DEVICE HAVING A PREDETERMINED INCLUDED ANGLE, A SECOND THREE PRONGED V-ANGLE DEVICE HAVING A PREDETERMINED INCLUDED ANGLE DIFFERENT THAN THE INCLUDED ANGLE OF SAID FIRST DEVICE, RECIPROCABLY MOUNTED RELATIVE TO SAID FIRST DEVICE, FIRST AND SECOND DISPLACEMENT TRANSDUCERS RESPECTIVELY MOUNTED IN FIXED ANGULAR RELATION TO SAID FIRST AND SECOND DEVICES ADAPTED TO MEASURE THE RADIAL DISPLACEMENT OF THE PERIPHERY OF SAID OBJECTS RELATIVE TO SAID DEVICES, AND MEANS CONNECTED TO SAID TRANSDUCERS FOR FACTORING THE OUTPUTS THEREFROM AND COMBINING SAID OUTPUTS TO PROVIDE A SINGLE OUTPUT INDICATIVE OF THE ACTUAL RADIAL DEVIATION OF SAID OBJECTS.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |