US2814918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cut-off wheel
Assignee: Saint Gobain Abrasives Inc
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Filing: 1956-06-07
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Granted: 1957-12-03
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Expires: 1976-06-07
Abstract
No abstract record available.
Inventors
- 👤 John R Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:23
CPC Classifications
B; B24; B24D; B24D5/00; B24D5/12; B24D18/00; B24D18/0009; B24D5/02; B24D5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
136 words
A PRESSED AND CURED DISC-SHAPED CUT-OFF WHEEL COMPRISING ABRASIVE GRIT BONDED WITH THERMO-SETTING RESIN BOND, SAID WHEEL HAVING ON EACH SIDE THEREOF INTEGRALLY BONDED THERETO BY SAID BOND A DISC OF OPEN MESH GLASS CLOTH OF THREADS OF CONTINUOUS FILAMENT GLASS YARN IN SETS OF UNITS OF WRAP AND WEFT HAVING A TENSILE STRENGTH OF AT LEAST 100 LBS. PER UNIT, ONE OF THE SETS OF UNITS OF WRAP AND WEFT HAVING AT LEAST TWO THREADS PER UNIT, SAID GLASS CLOTH HAVING FROM TWO AND ONE HALF TO SEVEN OPENINGS PER INCH IN THE DIRECTION OF THE WRAP AND IN THE DIRECTION OF THE WEFT, SAID DISCS OF GLASS CLOTH HAVING BEFORE PRESSING BEEN IMPREGNATED WITH THERMO-SETTING RESIN VARNISH WITH VOLATILES ELIMINATED TO BETWEEN 1.5% AND 10% OF SAID RESIN VARNISH BY WEIGHT, AND THERMO-SETTING RESIN
Claim 2
Dependent Claim
136 words
A PRESSED AND CURED DISC-SHAPED CUT-OFF WHEEL COMPRISING ABRASIVE GRIT BONDED WITH THERMO-SETTING RESIN BOND, SAID WHEEL HAVING ON EACH SIDE THEREOF INTEGRALLY BONDED THERETO BY SAID BOND A DISC OF OPEN MESH GLASS CLOTH OF THREADS OF CONTINUOUS FILAMENT GLASS YARN IN SETS OF UNITS OF WRAP AND WEFT HAVING A TENSILE STRENGTH OF AT LEAST 100 LBS. PER UNIT, ONE OF THE SETS OF UNITS OF WRAP AND WEFT HAVING AT LEAST TWO THREADS PER UNIT, SAID GLASS CLOTH HAVING FROM TWO AND ONE HALF TO SEVEN OPENINGS PER INCH IN THE DIRECTION OF THE WRAP AND IN THE DIRECTION OF THE WEFT, SAID DISCS OF GLASS CLOTH HAVING BEFORE PRESSING BEEN IMPREGNATED WITH THERMO-SETTING RESIN VARNISH WITH VOLATILES ELIMINATED TO BETWEEN 1.5% AND 10% OF SAID RESIN VARNISH BY WEIGHT, AND THERMO-SETTING RESIN
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) | 1960-12-02 | 1961-06-03 | 1961-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-02 | 1965-06-03 | 1965-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-02 | 1969-06-03 | 1969-12-03 | $7700.00 | Window Closed / Lapsed |