US4253850A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resin bonded abrasive bodies for snagging metal containing low abrasive and high filler content
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1979-08-17
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Granted: 1981-03-03
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Expires: 1999-08-17
Abstract
Abstract Organic bonded abrasive bodies such as snagging wheels and wheel segments for conditioning billets, slabs, and castings have abrading portions with 0 to 8% pores by volume, a low abrasive content of from 24 to 45% by volume of 4 to 36 grit size abrasive, substantially constant volume of a thermosetting resin of from 18 to 24% by volume and a high content of filler material constituting from 29% to 56% by volume of the body and wherein at least 80% by volume of the filler material is inorganic material.
Inventors
- 👤 Charles V. Rue
- 👤 Kesh S. Narayanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:04
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/34; B24D3/342; B24D3/344
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
88 words
An organic bonded abrasive body having an abrading portion suitable for snagging metal and wherein the abrading portion comprises: 24% to 45% by volume of from 4 to 36 grit size abrasive particles selected from a group consisting of fused aluminum oxide, fused alumina-zirconia, sintered alumina, sintered bauxite, sintered alumina-zirconia, silicon carbide, and mixtures thereof, 18% to 24% by volume of thermosetting resin, 0 to 8% by volume of pores, and 29% to 56% by volume of filler material containing at least 80% by volume of inorganic material.
Claim 2
Dependent Claim
88 words
An organic bonded abrasive body having an abrading portion suitable for snagging metal and wherein the abrading portion comprises: 24% to 45% by volume of from 4 to 36 grit size abrasive particles selected from a group consisting of fused aluminum oxide, fused alumina-zirconia, sintered alumina, sintered bauxite, sintered alumina-zirconia, silicon carbide, and mixtures thereof, 18% to 24% by volume of thermosetting resin, 0 to 8% by volume of pores, and 29% to 56% by volume of filler material containing at least 80% by volume of inorganic material.
Claim 3
Dependent Claim
27 words
An organic bonded abrasive body according to claim 1 wherein the thermosetting resin is selected from a group consisting of phenol-formaldehyde, phenol-furfural, aniline-formaldehyde, urea-formaldehyde, phenoxy, and epoxy.
Claim 4
Dependent Claim
55 words
An organic bonded abrasive body according to claim 1 wherein the filler material is selected from the group consisting of iron pyrites, potassium sulfate, cryolite, iron sulfide, fluorspar, sodium chloride, potassium fluoborate, silicon carbide, magnesia, alumina, calcium oxide, chopped glass fibers, copolymer of vinylidene chloride and vinyl chloride, polyvinylidene chloride, polyvinyl chloride, and mixtures thereof.
Claim 5
Dependent Claim
38 words
An organic bonded abrasive body according to claim 1 wherein the filler material is a mixture of iron pyrites, cryolite, calcium oxide and a copolymer of vinylidene chloride and vinyl chloride and the thermosetting resin is a phenolic.
Claim 6
Dependent Claim
35 words
An organic bonded abrasive body according to claim 1 wherein the filler material is a mixture of potassium sulfate, iron pyrites, calcium oxide, chopped glass fiber and a copolymer of vinylidene chloride and vinyl chloride.
Claim 7
Dependent Claim
34 words
An organic bonded abrasive body according to claim 5 wherein the mixture of filler material further comprises: silicon carbide of smaller particle size than the abrsive particles and wherein the thermosetting resin is phenolic.
Claim 8
Dependent Claim
50 words
An organic bonded abrasive body according to claim 1 wherein the abrasive body is a grinding wheel comprising: an outer abrading portion and a strong non-abrading fine center portion adjoining the abrading portion and extending around a central axis of the wheel and radially inwardly from the adjoining abrading portion.
Claim 9
Dependent Claim
36 words
An organic bonded abrasive body according to claim 1 wherein the filler material is selected from the group consisting of inorganic sulfides, inorganic sulfates, organic and inorganic halides, metal oxides, metal carbides, fibers and mixtures thereof.
Claim 10
Dependent Claim
31 words
An organic bonded abrasive body according to claim 8 wherein the inorganic sulfides filler material is selected from the group consisting of iron sulfide, iron disulfide, iron pyrites and mixtures thereof.
Claim 11
Dependent Claim
18 words
An organic bonded abrasive body according to claim 8 wherein the inorganic sulfate filler material is potassium sulfate.
Claim 12
Dependent Claim
44 words
An organic bonded abrasive body according to claim 8 wherein the inorganic or organic halides filler material is selected from the group consisting of cryolite, fluorspar, sodium chloride, potassium fluoborate, copolymer of vinylidene chloride and vinyl chloride, polyvinylidene chloride, polyvinyl chloride and mixtures thereof.
Claim 13
Dependent Claim
28 words
An organic bonded abrasive body according to claim 8 wherein the metal oxides filler material is selected from the group consisting of magnesia, alumina, calcia and mixtures thereof.
Claim 14
Dependent Claim
18 words
An organic bonded abrasive body according to claim 8 wherein the inorganic carbide filler material is silicon carbide.
Claim 15
Dependent Claim
16 words
An organic bonded abrasive body according to claim 8 wherein the fibers are chopped glass fibers.
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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) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |