US2712987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrading belt and method of making it
Assignee: Hartford Special Machinery Co
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Filing: 1951-10-09
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Granted: 1955-07-12
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Expires: 1971-10-09
Abstract
No abstract record available.
Inventors
- 👤 William H Storrs
- 👤 Arthur J Wells
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:33
CPC Classifications
B; B24; B24D; B24D11/00; B24D11/001; B24D11/005; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
THE PROCESS PRODUCING AN ABRASIVE ELEMENT, HAVING ABRASIVE GAINS AT THE SURFACE OF A PREDETERMINED NOMINAL SIZE, WHICH COMPRISES SOFTENING A SURFACE OF A BASE MATERIAL CONSISTING OF SYNTHETIC LINEAR CONDENSATION POLYMAMIDE ONLY ADJACENT THE SURFACE BY A SOLVENT TO A DEPTH NOT IN EXCESS OF THREE TIMES THE NORMINAL GRAIN SIZE IMBEDDING ABRASIVE PARTICLES IN THE POLYAMIDE ONLY WHERE THE SURFACE IS SOFTEN WHILE RETAINING THE INTERIOR OF THE POLYAMIDE UNCHANGED, AND REMOVING THE SOLVENT.
Claim 2
Dependent Claim
76 words
THE PROCESS PRODUCING AN ABRASIVE ELEMENT, HAVING ABRASIVE GAINS AT THE SURFACE OF A PREDETERMINED NOMINAL SIZE, WHICH COMPRISES SOFTENING A SURFACE OF A BASE MATERIAL CONSISTING OF SYNTHETIC LINEAR CONDENSATION POLYMAMIDE ONLY ADJACENT THE SURFACE BY A SOLVENT TO A DEPTH NOT IN EXCESS OF THREE TIMES THE NORMINAL GRAIN SIZE IMBEDDING ABRASIVE PARTICLES IN THE POLYAMIDE ONLY WHERE THE SURFACE IS SOFTEN WHILE RETAINING THE INTERIOR OF THE POLYAMIDE UNCHANGED, AND REMOVING THE SOLVENT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-11 | 1959-01-10 | 1959-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-11 | 1963-01-10 | 1963-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-11 | 1967-01-10 | 1967-07-12 | $7700.00 | Window Closed / Lapsed |