Patent CH226239A successfully refreshed from Google Patents.
US3299579A
Expired / Lapsed
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Grinding machine
Assignee: Heald Machine Co
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Filing: 1964-01-17
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Granted: 1967-01-24
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Expires: 1984-01-17
Abstract
No abstract record available.
Inventors
- 👤 Alden H Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:35
CPC Classifications
B; B24; B24D; B24D7/00; B24D7/14; B24B; B24B7/00; B24B7/10; B24B7/16; B24B7/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A GRINDING MACHINE FOR FINISHING OPPOSITE PARALLEL FLAT SURFACES OF A WORKPIECE, COMPRISING (A) A BASE, (B) A SPINDLE ROTATABLY MOUNTED IN THE BASE AND HAVING A PASSAGE THERETHROUGH CAPABLE OF RECEIVING WORKPIECES SERIATIM WITH THEIR FLAT SURFACES PERPENDICULAR TO THE AXIS OF THE SPINDLE, (C) A FIRST ABRASIVE WHEEL MOUNTED ON ONE END OF THE SPINDLE AND HAVING A GRINDING FACE GENERALLY PERPENDICULAR TO THE SPINDLE AXIS, (D) A SECOND ABRASIVE WHEEL ROTATABLY MOUNTED ON THE BASE AND HAVING A GRINDING FACE SPACED FROM AND
Claim 2
Dependent Claim
86 words
A GRINDING MACHINE FOR FINISHING OPPOSITE PARALLEL FLAT SURFACES OF A WORKPIECE, COMPRISING (A) A BASE, (B) A SPINDLE ROTATABLY MOUNTED IN THE BASE AND HAVING A PASSAGE THERETHROUGH CAPABLE OF RECEIVING WORKPIECES SERIATIM WITH THEIR FLAT SURFACES PERPENDICULAR TO THE AXIS OF THE SPINDLE, (C) A FIRST ABRASIVE WHEEL MOUNTED ON ONE END OF THE SPINDLE AND HAVING A GRINDING FACE GENERALLY PERPENDICULAR TO THE SPINDLE AXIS, (D) A SECOND ABRASIVE WHEEL ROTATABLY MOUNTED ON THE BASE AND HAVING A GRINDING FACE SPACED FROM AND
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |