Patent US2624660A successfully refreshed from Google Patents.
US2624660A
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Grinding wheel
Assignee: Saint Gobain Abrasives Inc
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Filing: 1950-09-07
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Granted: 1953-01-06
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Expires: 1970-09-07
Abstract
No abstract record available.
Inventors
- 👤 Teague Ernest Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:36
CPC Classifications
B; B24; B24D; B24D5/00; B24D5/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A COPING WHEEL COMPRISING A STEEL CENTER, AN ANNULAR ABRASIVE PORTION OF ABRASIVE GRAIN BONDED WITH THERMO-IRREVERSIBLE PHENOL-FORMALDEHYDE RESIN ON THE PERIPHERY OF SAID STEEL CENTER, AND A LAYER OF SHELLAC BETWEEN SAID ABRASIVE PORTION AND SAID STEEL CENTER ON BOTH SIDES OF SAID STEEL CENTER, SAID LAYER BEING AT LEAST ONE THIRTY-SECOND OF AN INCH THICK AND SAID ANNULAR ABRASIVE PORTION OUTSIDE OF THE LAYER OF SHELLAC ON BOTH SIDES HAVING A THICKNESS AT LEAST AS GREAT AS THAT OF THE LAYER OF SHELLAC WITHIN IT.
Claim 2
Dependent Claim
87 words
A COPING WHEEL COMPRISING A STEEL CENTER, AN ANNULAR ABRASIVE PORTION OF ABRASIVE GRAIN BONDED WITH THERMO-IRREVERSIBLE PHENOL-FORMALDEHYDE RESIN ON THE PERIPHERY OF SAID STEEL CENTER, AND A LAYER OF SHELLAC BETWEEN SAID ABRASIVE PORTION AND SAID STEEL CENTER ON BOTH SIDES OF SAID STEEL CENTER, SAID LAYER BEING AT LEAST ONE THIRTY-SECOND OF AN INCH THICK AND SAID ANNULAR ABRASIVE PORTION OUTSIDE OF THE LAYER OF SHELLAC ON BOTH SIDES HAVING A THICKNESS AT LEAST AS GREAT AS THAT OF THE LAYER OF SHELLAC WITHIN IT.
References Cited (Backward Citations)
US2268663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-06 | 1956-07-07 | 1957-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-06 | 1960-07-07 | 1961-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-06 | 1964-07-07 | 1965-01-06 | $7700.00 | Window Closed / Lapsed |