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Patent US3624971A successfully refreshed from Google Patents.
US3624971A
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US
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Grinding control system and method
Assignee: Individual
•
Filing: 1968-08-30
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Granted: 1971-12-07
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Expires: 1988-08-30
Abstract
Abstract A GRINDING CONTROL SYSTEM FOR A VALVE ASSEMBLY INCLUDING MEANS FOR DETERMINING THE RELATIVE POSITION BETWEEN ONE MEMBER OF THE VALVE ASSEMBLY AND A REFERENCE STANDARD SIMILAR TO THE OTHER MEMBER OF THE ASSEMBLY SO THAT THE ASSEMBLY WILL PROVIDE A PREDETERMINED CONTROL OF FLUID FLOW, A TRANSDUCER RESPONSIVE TO THIS RELATIVE POSITION FOR GENERATING AN ELECTRIC SIGNAL WHICH IS RECEIVED BY A STORAGE MEANS ADAPTED TO BE CONNECTED TO AN ADDITIONAL TRANSDUCER FOR CONTROLLING THE GRINDING OF THE STEM MEMBER. A METHOD FOR CONTROLLING THE GRINDING
Inventors
- 👤 Richard J Levi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:55
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; B; B24; B24B; B24B49/00; B24B49/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |