US4337750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasion resistant diamond blade
Assignee: Saint Gobain Abrasives Inc
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Filing: 1980-10-08
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Granted: 1982-07-06
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Expires: 2000-10-08
Abstract
Abstract A saw blade having diamond or other abrasive segments bonded to the periphery of a steel center includes segments of a hook shape with a leg extending radially of the saw. Hooks of different length are provided whereby erosion of the blade at the joints between the segments and the steel center is minimized.
Inventors
- 👤 Richard E. Dutcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:09
CPC Classifications
B; B24; B24D; B24D5/00; B24D5/12; B24D5/123
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
87 words
A circular rotary cutting blade having hard abrasive segments, selected from the group consisting of diamond particles, cubic boron nitride particles or diamond and cubic boron nitride particles bonded in a hard metal matrix, bonded to the periphery, and separated by radially extending gullets, wherein at least some of the segments are hook shaped and have a leg extending from one end toward the center of the blade, the improvement comprising the inclusion of segments having leg lengths differing, one from the other, by at least 10%.
Claim 2
Dependent Claim
87 words
A circular rotary cutting blade having hard abrasive segments, selected from the group consisting of diamond particles, cubic boron nitride particles or diamond and cubic boron nitride particles bonded in a hard metal matrix, bonded to the periphery, and separated by radially extending gullets, wherein at least some of the segments are hook shaped and have a leg extending from one end toward the center of the blade, the improvement comprising the inclusion of segments having leg lengths differing, one from the other, by at least 10%.
Claim 3
Dependent Claim
10 words
A blade as in claim 1 also including un-hooked segments.
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) | 1985-07-05 | 1986-01-04 | 1986-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-05 | 1990-01-04 | 1990-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-05 | 1994-01-04 | 1994-07-06 | $7700.00 | Window Closed / Lapsed |