Patent US4866885A successfully refreshed from Google Patents.
US4866885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive product
Assignee: Individual
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Filing: 1988-02-08
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Granted: 1989-09-19
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Expires: 2008-02-08
Abstract
Abstract A composite abrasive compact is produced by placing strips of suitable abrasive material on a cemented carbide substrate. The strips each comprise abrasive particles, optionally with a particulate second phase, in an organic binder. The organic binder is first removed by volatilization. Then, the cemented carbide substrate with the strips thereon is subjected to compact-producing conditions of elevated temperature and pressure.
Inventors
- 👤 John Dodsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:04
CPC Classifications
B; B24; B24D; B24D18/00; B24D18/0009; B24D3/00; B24D3/008
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
46 words
A method according to the layer of particulate components is deposited on the surface of the substrate by suspending the particulate components in a liquid containing the organic binder dispersed or dissolved therein, depositing liquid suspension on the surface and removing the liquid from the suspension.
Claim 2
Independent Claim
46 words
A method according to the layer of particulate components is deposited on the surface of the substrate by suspending the particulate components in a liquid containing the organic binder dispersed or dissolved therein, depositing liquid suspension on the surface and removing the liquid from the suspension.
Claim 3
Dependent Claim
11 words
A method according to claim 1 wherein the liquid is water.
Claim 4
Dependent Claim
16 words
A method according to claim 2 wherein the liquid is removed from the suspension by heating.
Claim 5
Dependent Claim
29 words
A method according to claim 1 wherein the layer of particulate components is a coherent, self-supporting layer which is pre-formed and then placed on the surface of the substrate.
Claim 6
Independent Claim
148 words
A method of making an abrasive body which comprises a layer of bonded ultra-hard abrasive particles bonded to a substrate, including the steps of: (i) providing the substrate; (ii) depositing a layer of the components necessary to form the layer of bonded ultra-hard abrasive particles, in particulate form, in an organic binder on a surface of the substrate; and (iii) subjecting the substrate and layer to conditions of elevated temperature and pressure at which the ultra-hard abrasive particle is crystallographically stable wherein the layer of particulate components is a coherent, self-supporting layer which is pre-formed and then placed on the surface of the substrate, the coherent, self-supporting layer being produced by depositing a coating of the particulate components suspended in a liquid which contains the organic binder dissolved or dispersed therein on to a support surface, removing the liquid from the coating, and heating the thus treated coating.
Claim 7
Independent Claim
148 words
A method of making an abrasive body which comprises a layer of bonded ultra-hard abrasive particles bonded to a substrate, including the steps of: (i) providing the substrate; (ii) depositing a layer of the components necessary to form the layer of bonded ultra-hard abrasive particles, in particulate form, in an organic binder on a surface of the substrate; and (iii) subjecting the substrate and layer to conditions of elevated temperature and pressure at which the ultra-hard abrasive particle is crystallographically stable wherein the layer of particulate components is a coherent, self-supporting layer which is pre-formed and then placed on the surface of the substrate, the coherent, self-supporting layer being produced by depositing a coating of the particulate components suspended in a liquid which contains the organic binder dissolved or dispersed therein on to a support surface, removing the liquid from the coating, and heating the thus treated coating.
Claim 8
Dependent Claim
11 words
A method according to claim 5 wherein the liquid is water.
Claim 9
Dependent Claim
13 words
A method according to claim 6 wherein the liquid is removed by heating.
Claim 10
Dependent Claim
22 words
A method according to claim 5 wherein the coating, after the liquid has been removed and prior to the heating, is compacted.
Claim 11
Independent Claim
89 words
A method of making an abrasive body which comprises a layer of bonded ultra-hard abrasive particles bonded to a substrate, including the steps of: (i) providing the substrate; (ii) depositing a layer of the components necessary to form the layer of bonded ultra-hard abrasive particles, in particulate form, in an organic binder on a surface of the substrate; and (iii) subjecting the substrate and layer to conditions of elevated temperature and pressure at which the ultrahard abrasive particle is crystallographically stable wherein the organic binder is a cellulose derivative
Claim 12
Independent Claim
89 words
A method of making an abrasive body which comprises a layer of bonded ultra-hard abrasive particles bonded to a substrate, including the steps of: (i) providing the substrate; (ii) depositing a layer of the components necessary to form the layer of bonded ultra-hard abrasive particles, in particulate form, in an organic binder on a surface of the substrate; and (iii) subjecting the substrate and layer to conditions of elevated temperature and pressure at which the ultrahard abrasive particle is crystallographically stable wherein the organic binder is a cellulose derivative
Claim 13
Dependent Claim
19 words
A method according to claim 9 wherein the cellulose derivative decomposes at a temperature of 300° C. or higher.
Claim 14
Dependent Claim
30 words
A method according to claim 1 wherein the substrate presents at least one major flat surface and the layer is deposited on that surface so as to cover it completely.
Claim 15
Dependent Claim
71 words
A method according to claim 1 wherein the substrate presents at lease one major flat surface, a plurality of coherent, selfsupporting layers of the particulate components, in strip form, are provided, the strips are placed on the major flat surface in spaced relationship and a material suitable to produce a bonded abrasive layer less abrasive than the layers of bonded ultra-hard abrasive particles is placed in the spaces between adjacent strips.
Claim 16
Dependent Claim
42 words
A method according to claim 1 wherein the substrate has a recess having side walls and a base formed therein and the layer is deposited in the recess so as to cover the base and at least part of the side walls.
Claim 17
Dependent Claim
13 words
A method according to claim 1 wherein the substrate is cemented carbide substrate.
Claim 18
Dependent Claim
24 words
A method according to claim 1 wherein the layer of bonded ultra-hard abrasive particles has a second phase uniformly distributed through the bonded particles.
Claim 19
Independent Claim
97 words
A method of making an abrasive body which comprises a layer of bonded ultra-hard abrasive particles bonded to a substrate, including the steps of: (i) providing the substrate; (ii) depositing a layer of the components necessary to form the layer of bonded ultra-hard abrasive particles, in particulate form, in an organic binder on a surface of the substrate; and (iii) subjecting the substrate and layer to conditions of elevated temperature and pressure at which the ultra-hard abrasive particle is crystallographically stable. wherein the organic binder is removed from the layer of particulate components prior to step (iii).
Claim 20
Independent Claim
97 words
A method of making an abrasive body which comprises a layer of bonded ultra-hard abrasive particles bonded to a substrate, including the steps of: (i) providing the substrate; (ii) depositing a layer of the components necessary to form the layer of bonded ultra-hard abrasive particles, in particulate form, in an organic binder on a surface of the substrate; and (iii) subjecting the substrate and layer to conditions of elevated temperature and pressure at which the ultra-hard abrasive particle is crystallographically stable. wherein the organic binder is removed from the layer of particulate components prior to step (iii).
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) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |