US2947616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding wheel structure
Assignee: Saint Gobain Abrasives Inc
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Filing: 1957-11-12
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Granted: 1960-08-02
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Expires: 1977-11-12
Abstract
No abstract record available.
Inventors
- 👤 Jr Loring Coes
- 👤 Marion S Champagne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:46
CPC Classifications
B; B24; B24D; B24D18/00; B24D18/0027; B23; B23H; B23H5/00; B23H5/06; B23H5/08; B24B; B24B19/00; B24B19/02; B24B19/022; B24B49/00; B24D3/00; B24D3/02; B24D3/04; B24D3/14; B24D3/18; B24D5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A GRINDING WHEEL CONSISTING OF ABRASIVE GRAINS BONDED TOGETHER BY ELECTRICALLY NON-CONDUCTIVE VITRIFIED CERAMIC BOND LEAVING INTERCONNECTING PORE SPACES IN THE WHEEL, AND A CONTINUOUS LINING OF VITREOUS CARBON ON THE WALLS OF THE INTERCONNECTING PORE SPACES SAID VITREOUS CARBON BEING ELECTRICALLY CONDUCTIVE AND SAID LINING FORMING A CONTINUOUS ELECTRICAL PATH THROUGH THE WHEEL, SAID WHEEL HAVING SURFACES AND SAID PATH EXTENDING FROM ONE SURFACE TO ANOTHER SURFACE AND SAID CONTINUOUS LINING BEING ALSO ON THE WALLS OF THE SURFACE PORES OF SAID SURFACES.
Claim 2
Dependent Claim
84 words
A GRINDING WHEEL CONSISTING OF ABRASIVE GRAINS BONDED TOGETHER BY ELECTRICALLY NON-CONDUCTIVE VITRIFIED CERAMIC BOND LEAVING INTERCONNECTING PORE SPACES IN THE WHEEL, AND A CONTINUOUS LINING OF VITREOUS CARBON ON THE WALLS OF THE INTERCONNECTING PORE SPACES SAID VITREOUS CARBON BEING ELECTRICALLY CONDUCTIVE AND SAID LINING FORMING A CONTINUOUS ELECTRICAL PATH THROUGH THE WHEEL, SAID WHEEL HAVING SURFACES AND SAID PATH EXTENDING FROM ONE SURFACE TO ANOTHER SURFACE AND SAID CONTINUOUS LINING BEING ALSO ON THE WALLS OF THE SURFACE PORES OF SAID SURFACES.
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) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |