Patent US4381925A successfully refreshed from Google Patents.
US4381925A
Expired / Lapsed
US
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Grinding disk
Assignee: Tyrolit-Schleifmittelwerke Swarovski KG
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Filing: 1981-01-29
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Granted: 1983-05-03
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Expires: 2001-01-29
Abstract
Abstract A grinding disk comprising abrasive grains such as corundum, a bonding agent such as phenolic resin, and a filler material. At least part of said filler material is an active filler, i.e. a material that acts chemically and/or physically in the grinding process. At least part of this active filler material is provided in the form of particles that are solid bodies of lamellar structure. The lamellar structure is a supporting grid and has an intercalated guest component.
Inventors
- 👤 Karl Colleselli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:16
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/34; B24D3/346
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
70 words
In an abrasive article comprising abrasive grains, a bonding agent, and an active filler, the improvement wherein at least a part of the active filler is graphite of a lamellar structure, acting as a supporting grid, having an intercalated guest component selected from the group consisting of a metal, a metal halide, a metal sulfide, a transition metal hydride, a transition metal carbide, a transition metal nitride and elemental sulfur.
Claim 2
Dependent Claim
70 words
In an abrasive article comprising abrasive grains, a bonding agent, and an active filler, the improvement wherein at least a part of the active filler is graphite of a lamellar structure, acting as a supporting grid, having an intercalated guest component selected from the group consisting of a metal, a metal halide, a metal sulfide, a transition metal hydride, a transition metal carbide, a transition metal nitride and elemental sulfur.
Claim 3
Dependent Claim
40 words
An abrasive article according to claim 1, wherein at least 3% of the active filler based on the total weight of the active filler is graphite of a lamellar structure, acting as a supporting grid, having said intercalated guest component.
Claim 4
Dependent Claim
40 words
An abrasive article according to claim 2, wherein 20% to 50% of the active filler based on the total weight of the active filler is graphite of a lamellar structure, acting as a supporting grid, having said intercalated guest component.
Claim 5
Dependent Claim
21 words
An abrasive article according to claim 1, wherein said guest component is a metal, a metal halide or a metal sulfide.
Claim 6
Dependent Claim
17 words
An abrasive article according to claim 3 wherein said filler particles are a graphite-ferrous, chloride intercalation compound.
Claim 7
Dependent Claim
17 words
An abrasive article according to claim 4, wherein said filler particles are a graphite-ferric chloride intercalation compound.
Claim 8
Dependent Claim
22 words
An abrasive article according to claim 1, 2, 3, 4, 5 or 6, wherein said filler particles are provided with a coating.
Claim 9
Dependent Claim
20 words
An abrasive article according to claim 7, wherein said coating is a cured synthetic resin compatible with said bonding agent.
Claim 10
Dependent Claim
12 words
An abrasive article according to claim 7, wherein said coating is inorganic.
Claim 11
Dependent Claim
20 words
An abrasive article according to claim 8, wherein fine grained, hard matters are admixed with said coating to increase adhesiveness.
Claim 12
Dependent Claim
47 words
An abrasive article according to claim 1, wherein the guest component is a member selected from the group consisting of the hydrides, carbides and nitrides of titanium, vanadium, molybdenum and tungsten, an alkali metal, ferric chloride, ferrous chloride, zinc chloride, tin chloride, potassium chloride and elemental sulfur.
Claim 13
Dependent Claim
16 words
An abrasive article according to claim 9, wherein said coating is a silicate or a phosphate.
Claim 14
Dependent Claim
20 words
An abrasive article according to claim 10, wherein said fine grained, hard matters are silicon carbide, corundum or a silicate.
Claim 15
Dependent Claim
20 words
An abrasive article according to claim 9, wherein fine grained, hard matters are admixed with said coating to increase adhesiveness.
Claim 16
Dependent Claim
20 words
An abrasive article according to claim 14, wherein said fine grained, hard matters are silicon carbide, corundum or a silicate.
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) | 1986-05-02 | 1986-11-01 | 1987-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-02 | 1990-11-01 | 1991-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-02 | 1994-11-01 | 1995-05-03 | $7700.00 | Window Closed / Lapsed |