US3238675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic grinding apparatus and grinding method
Assignee: Individual
•
Filing: 1964-11-25
•
Granted: 1966-03-08
•
Expires: 1984-11-25
Abstract
No abstract record available.
Inventors
- 👤 James D Abbott
- 👤 Charles H Chandler
- 👤 Francis E Flaherty
- 👤 Angus W Mackiernan
- 👤 Lambly Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:51
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/36; B24B3/48; B24B3/485
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
A CONTROL SYSTEM FOR A GRINDING MACHINE HAVING GRINDING HEADS FOR FORMING THE BEVELS OF AN EDGE ON A MOVING METAL STRIP AND MEANS FOR EFFECTING HEAD CORRECTION MOVEMENTS WITH RESPECT TO THE STRIP, COMPRISING MEANS FOR SCANNING EACH BEVEL TO DEVELOP A SIGNAL AS A FUNCTION OF THE WIDTH THEREOF AND MEANS FOR COMPARING SAID SIGNALS TO DEVELOP AN ERROR SIGNAL OF A SENSE CORRESPONDING TO THE SENSE OF DEVIATION FROM A DESIRED BEVEL WIDTH RELATIONSHIP AND OF A MAGNITUDE PROPORTIONAL TO THE AMOUNT OF DEVIATION, MEANS FOR PERIODICALLY SENSING SAID ERROR SIGNAL, MEANS RESPONSIVE TO THE SAMPLED ERROR SIGNAL FOR DETERMINING THE HEAD CORRECTION MOVEMENTS NECESSARY TO CORRECT FOR SAID DEVIATION AND MEANS FOR ACTUATING THE GRINDING HEADS IN ACCORDANCE WITH SUCH DETERMINATION.
References Cited (Backward Citations)
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Cited
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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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |