US3645706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinoid grinding wheels containing nickel-coated cubic boron nitride particles
Assignee: General Electric Co
•
Filing: 1969-12-16
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Granted: 1972-02-29
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Expires: 1989-12-16
Abstract
Abstract An improved resinoid grinding wheel particularly useful for the wet or dry grinding of hardened steels and steel alloys utilizes nickel-coated cubic boron nitride particles as the abrasive medium.
Inventors
- 👤 Harold Paul Bovenkerk
- 👤 William Arthur Berecki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:38
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1436; C09K3/1445; B; B24; B24D; B24D18/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
15 words
A grinding wheel as claimed in claim 1 wherein the resinous material is phenol formaldehyde.
Claim 2
Dependent Claim
15 words
A grinding wheel as claimed in claim 1 wherein the resinous material is a polyimide.
Claim 3
Independent Claim
83 words
A method of making an abrasive wheel for hardened steel and steel alloys comprising applying a coating of nickel to a quantity of cubic boron nitride particles, the nickel constituting about 30 to 80 weight percent of the coated particles, mixing said coated particles with resinous material, selected from the group consisting of phenol-formaldehyde, urea-formaldehyde, melamine-formaldehyde, epoxy, polyester, polyamide and polyimide resins, and mixtures thereof and forming the coated cubic boron nitride resinous material mixture as the abrasive surface of a grinding wheel.
Claim 4
Dependent Claim
15 words
A grinding wheel as claimed in claim 4 wherein the resinous material is phenol formaldehyde.
Claim 5
Dependent Claim
15 words
A grinding wheel as claimed in claim 4 wherein the resinous material is a polyimide.
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |