Patent US3562801A successfully refreshed from Google Patents.
US3562801A
Expired / Lapsed
US
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Belt-type blade sharpener apparatus for a cloth cutting machine
Assignee: Wolf Machine Co
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Filing: 1968-09-11
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Granted: 1971-02-09
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Expires: 1988-09-11
Abstract
Abstract A PAD ARRESTER FOR AN ENDLESS BELT-TYPE BLADE SHARPENER USED WITH A VERTICAL BLADE CLOTH CUTTING MACHINE. THE PAD ARRESTER PREVENTS THE BOTTOM BELT''S PAD FROM URGING THE BOTTOM BELT INTO THE RECIPROCATING KNIFE BLADE''S PATH WHEN THE BLADE SHARPENER APPARATUS REACHES THE HALFWAY POINT OF ITS SHARPENING CYCLE, THAT IS, WHEN THE BLADE SHARPENER BOTTOMS OUT AS IT ENDS ITS DOWNWARD STROKE AND STARTS ITS RETURN STROKE. THUS, THE PAD ARRESTER PREVENTS THE BOTTOM BELT OF THE BLADE SHARPENER FROM BEING SLICED THROUGH AND/OR THE BLADE FROM BEING DISFIGURED AS THE SHARPENER APPARATUS COMMENCES ITS RETURN STROKE.
Inventors
- 👤 Robert G Stucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:49
CPC Classifications
B; B26; B26D; B26D7/00; B26D7/08; B26D7/12; B24; B24B; B24B21/00; B24B21/002; B24B21/04; B24B21/06; B24B3/00; B24B3/36; B24B3/361; B26F; B26F1/00; B26F1/38; B26F1/3806; B26F1/3813; B26F1/382
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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |