US3121981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive wheels and method of making the same
Assignee: Dart Industries Inc
•
Filing: 1960-09-23
•
Granted: 1964-02-25
•
Expires: 1980-09-23
Abstract
No abstract record available.
Inventors
- 👤 Hurst Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:46
CPC Classifications
B; B24; B24D; B24D5/00; B24D5/02; B24D5/04; B24D7/00; B24D7/02; B24D7/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A REINFORCED ABRASIVE WHEEL COMPRISING A MASS OF GRANULAR ABRASIVE HELD TOGETHER BY AN ORGANIC BOND AND CONTAINING A PLURALITY OF SEPARATE SPACED PLIES OF CORD REINFORCEMENT, EACH OF SAID PLIES CONSISTING OF A SERIES OF PARALLEL CORDS SUPPORTED ON AN ABRASIVE-INCLUDED NONWOVEN FIBROUS SHEET, HAVING A DIRECTIONAL DISPOSITION OF THE CORDS DIFFERENT FROM THE DIRECTIONAL DISPOSITION OF THE CORDS OF OTHER REINFORCING PLIES THEREIN.
Claim 2
Dependent Claim
65 words
A REINFORCED ABRASIVE WHEEL COMPRISING A MASS OF GRANULAR ABRASIVE HELD TOGETHER BY AN ORGANIC BOND AND CONTAINING A PLURALITY OF SEPARATE SPACED PLIES OF CORD REINFORCEMENT, EACH OF SAID PLIES CONSISTING OF A SERIES OF PARALLEL CORDS SUPPORTED ON AN ABRASIVE-INCLUDED NONWOVEN FIBROUS SHEET, HAVING A DIRECTIONAL DISPOSITION OF THE CORDS DIFFERENT FROM THE DIRECTIONAL DISPOSITION OF THE CORDS OF OTHER REINFORCING PLIES THEREIN.
References Cited (Backward Citations)
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |