US3902873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal coated synthetic diamonds embedded in a synthetic resinous matrix bond
Assignee: Industrial Distributors 1946 Ltd
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Filing: 1970-12-28
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Granted: 1975-09-02
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Expires: 1990-12-28
Abstract
Abstract A diamond abrasive device, such as a grinding wheel, comprising metal clad diamond particles embedded in a bonding matrix of resinous material, which is characterized in that the diamond particles comprise MD particles.
Inventors
- 👤 Frank Hallmark Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:10
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/14; C09K3/1436; C09K3/1445
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A DIAMOND ABRASIVE GRINDING WHEEL FOR GRINDING SOFT METAL HAVING A HARDNESS LYING IN THE RANGE FROM VPN 95 TO VPN 265, COMPRISING A HUB AND AN ANNULAR ABRASIVE ZONE AROUND THE PERIPHERY OF THE HUB, THE ABRASIVE ZONE COMPRISING A BONDING MATRIX OF RESINOUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF PHENOLIC, EPOXY, POLYIMIDE, ALKYD, UNSATURATED POLYESTER, SILICONE, POLYBENZINIMIDAZOLE AN POLYAMIDIMIDE HAVING EMBEDDED THEREIN SYNTHETIC DIAMOND PARTICLES COATED WITH A METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL,
Claim 2
Dependent Claim
79 words
A DIAMOND ABRASIVE GRINDING WHEEL FOR GRINDING SOFT METAL HAVING A HARDNESS LYING IN THE RANGE FROM VPN 95 TO VPN 265, COMPRISING A HUB AND AN ANNULAR ABRASIVE ZONE AROUND THE PERIPHERY OF THE HUB, THE ABRASIVE ZONE COMPRISING A BONDING MATRIX OF RESINOUS MATERIAL SELECTED FROM THE GROUP CONSISTING OF PHENOLIC, EPOXY, POLYIMIDE, ALKYD, UNSATURATED POLYESTER, SILICONE, POLYBENZINIMIDAZOLE AN POLYAMIDIMIDE HAVING EMBEDDED THEREIN SYNTHETIC DIAMOND PARTICLES COATED WITH A METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL,
Claim 3
Dependent Claim
23 words
A diamond abrasive grinding wheel as claimed in claim 1, wherein the metal coating comprises approximately 55% by weight of the composite particles.
Claim 4
Dependent Claim
26 words
A diamond abrasive grinding wheel as claimed in claim 1, wherein the sizes of said synthetic MD particles lie in the range 70 to 120 mesh.
Claim 5
Dependent Claim
108 words
In a diamond abrasive grinding device for soft metal having a hardness lying in the range from VPN 95 to VPN 265, an abrasive surface comprising metal coated synthetic MD particles embedded in a bonding matrix of resinous material selected from the group consisting of phenolic, epoxy, polyimide, alkyd, unsaturated polyester, silicone, polybenzinimidazole and polyamidimide resin, the metal coating comprising 10 to 70% by weight of the composite particles and comprising a metal selected from the group consisting of nickel, cobalt, silver, copper, molybdenum, titanium, aluminum, manganese, cadmium, tin, zinc, chromium, the platinum group metals, gold, tungsten, iron, zirconium and alloys containing at least one of said metals.
Claim 6
Dependent Claim
108 words
In a diamond abrasive grinding device for soft metal having a hardness lying in the range from VPN 95 to VPN 265, an abrasive surface comprising metal coated synthetic MD particles embedded in a bonding matrix of resinous material selected from the group consisting of phenolic, epoxy, polyimide, alkyd, unsaturated polyester, silicone, polybenzinimidazole and polyamidimide resin, the metal coating comprising 10 to 70% by weight of the composite particles and comprising a metal selected from the group consisting of nickel, cobalt, silver, copper, molybdenum, titanium, aluminum, manganese, cadmium, tin, zinc, chromium, the platinum group metals, gold, tungsten, iron, zirconium and alloys containing at least one of said metals.
Claim 7
Dependent Claim
23 words
A diamond abrasive grinding device as claimed in claim 4, wherein said metal coating comprises approximately 55% by weight of the composite particles.
Claim 8
Dependent Claim
25 words
A diamond abrasive grinding device as claimed in claim 4, in which the sizes of said particles lie in the range 70 to 120 mesh.
Claim 9
Independent Claim
111 words
A method of grinding a workpiece having a hardness lying in the range from VPN 95 to VPN 265, comprising the step of subjecting the workpiece to abrasion by metal clad synthetic MD particles embedded in a bonding matrix of resinous material selected from the group consisting of phenolic, epoxy, polyimide, alkyd, unsaturated polyester, silicone, polybenzinimidazole and polyamidimide resin, the metal coating comprising 10 to 70% by weight of the composite particles and comprising a metal selected from the group consisting of nickel, cobalt, silver, copper, molybdenum, titanium, aluminum, manganese, cadmium, tin, zinc, chromium, the platinum group metals, gold, tungsten, iron, zirconium, and alloys containing at least one of said metals.
Claim 10
Independent Claim
111 words
A method of grinding a workpiece having a hardness lying in the range from VPN 95 to VPN 265, comprising the step of subjecting the workpiece to abrasion by metal clad synthetic MD particles embedded in a bonding matrix of resinous material selected from the group consisting of phenolic, epoxy, polyimide, alkyd, unsaturated polyester, silicone, polybenzinimidazole and polyamidimide resin, the metal coating comprising 10 to 70% by weight of the composite particles and comprising a metal selected from the group consisting of nickel, cobalt, silver, copper, molybdenum, titanium, aluminum, manganese, cadmium, tin, zinc, chromium, the platinum group metals, gold, tungsten, iron, zirconium, and alloys containing at least one of said metals.
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) | 1978-09-01 | 1979-03-03 | 1979-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-01 | 1983-03-03 | 1983-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-01 | 1987-03-03 | 1987-09-02 | $7700.00 | Window Closed / Lapsed |