Patent US4575384A successfully refreshed from Google Patents.
US4575384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding wheel for grinding titanium
Assignee: Saint Gobain Abrasives Inc
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Filing: 1984-05-31
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Granted: 1986-03-11
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Expires: 2004-05-31
Abstract
Abstract An abrasive product and process is disclosed, for grinding titanium metal and its alloy. The product used to grind the titanium consists of a grinding wheel wherein the abrasive grains are aggregates of silicon carbide particles bonded together with a refractory bond such as silicon oxynitride or a silicate based material.
Inventors
- 👤 Robert H. Licht
- 👤 Charles V. Rue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:55
CPC Classifications
B; B24; B24D; B24D99/00; B24D3/00; B24D3/02; B24D3/04; B24D3/14; C; C09; C09K; C09K3/00; C09K3/14; C09K3/1436
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
68 words
A process for grinding titanium metal and its alloys, characterized by: applying to the surface of said metal, a moving abrasive product comprised of abrasive grains and a bond therefor wherein said abrasive grains are each made up of a plurality of silicon carbide particles bonded together by an inorganic binder wherein said inorganic binder is one selected from the group consisting of silicon oxynitride and iron silicate.
Claim 2
Dependent Claim
68 words
A process for grinding titanium metal and its alloys, characterized by: applying to the surface of said metal, a moving abrasive product comprised of abrasive grains and a bond therefor wherein said abrasive grains are each made up of a plurality of silicon carbide particles bonded together by an inorganic binder wherein said inorganic binder is one selected from the group consisting of silicon oxynitride and iron silicate.
Claim 3
Dependent Claim
51 words
The process of claim 1 wherein said abrasive grains are made up from 80% to 95% by weight of silicon carbide particles, 5% to 20% by weight of inorganic binder therefor, and wherein said silicon carbide particles can vary in size from about 4620 microns to about 32 microns and finer.
Claim 4
Dependent Claim
33 words
The process of claim 1 wherein said resin bond includes fillers and said resin is selected from the group consisting of phenol-aldehyde condensation resin, epoxy resin, polyester resin, polyimide resin, and polybenzimidazole resin.
Claim 5
Dependent Claim
39 words
The process of claim 3 wherein said grinding wheel consists essentially of 40% to 60% by volume of said abrasive grains, 12% to 60% by volume of combined resin and filler, and 0% to 28% by volume of pores.
Claim 6
Dependent Claim
29 words
The process of claim 1 wherein said abrasive product is a coated abrasive comprising a flexible backing to which said abrasive grains are affixed with a thermoset organic polymer.
Claim 7
Dependent Claim
20 words
The process of claim 1 wherein said abrasive grains include up to 75% by weight of alumina-zirconia crushed cofused abrasive.
Claim 8
Dependent Claim
45 words
An abrasive grain especially suitable for grinding titanium and titanium alloys, said abrasive grain being made up of a plurality of silicon carbide particles bonded together by a substantially lesser amount of a bond selected from the group consisting of silicon oxynitride and iron silicate.
Claim 9
Dependent Claim
45 words
An abrasive grain especially suitable for grinding titanium and titanium alloys, said abrasive grain being made up of a plurality of silicon carbide particles bonded together by a substantially lesser amount of a bond selected from the group consisting of silicon oxynitride and iron silicate.
Claim 10
Dependent Claim
59 words
The abrasive of claim 7 wherein said silicon carbide particles are present in an amount of from 80% to 95% by weight, the silicon oxynitride or iron silicate is present in an amount of from 5% to 20% by weight, and said silicon carbide has a particle size of from about 4620 microns to about 32 microns and finer.
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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) | 1989-03-10 | 1989-09-09 | 1990-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-10 | 1993-09-09 | 1994-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-10 | 1997-09-09 | 1998-03-11 | $7700.00 | Window Closed / Lapsed |