US3770400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making grinding members
Assignee: Toolmasters Ltd
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Filing: 1969-01-06
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Granted: 1973-11-06
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Expires: 1989-01-06
Abstract
Abstract A method of making a grinding member comprising a composition of a hardened resin and abrasive particles on a base, in which the resin in a kneadable condition is rolled on the base with a master roller to a predetermined profile and the resin is thereafter caused to harden slowly substantially without change of shape or volume, wherein there is included the improvement of initially filling the resin with a particulate substance imparting at least one of thermal and electrical conductivity, heat-, shock- and wear-resistance and ready wearability, of initially filling the resin with coarse abrasive particles and subsequently embedding fine abrasive particles in its exposed surface, and/or of bonding abrasive particles to the profiled surface by means of a hardenable resin the same as or compatible with that of the composition.
Inventors
- 👤 R Hallewell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:57
CPC Classifications
B; B24; B24D; B24D18/00
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
9 words
dispersing particles of inert filler material in said resin,
Claim 2
Dependent Claim
18 words
mixing said resin with coarse abrasive particles so that said coarse abrasive particles become dispersed in said resin,
Claim 3
Dependent Claim
22 words
A method as defined in claim 1 wherein said adhesive resin and abrasive particles are applied to said profiled surface in admixture.
Claim 4
Dependent Claim
97 words
while the filled resin is supported on the base and is in a partially hardened condition in which it is capable of being permanently deformed upon application of pressure thereto and is nonsticky, molding the resin layer to alter the shape of said resin layer by moving a rotating shaping roller over an exposed surface of the resin layer and applying a deforming pressure onto said surface of said resin layer by means of the roller and thereby altering the shape of said resin layer until said exposed surface thereof has been deformed to a final profile,
Claim 5
Dependent Claim
31 words
A method as defined in claim 1 wherein said liquid adhesive resin is applied alone over said profiled surface and said abrasive particles are thereafter embedded in said adhesive resin coating.
Claim 6
Dependent Claim
22 words
applying to said profiled surface abrasive particles and a liquid adhesive resin which adheres to said filled resin and said abrasive particles,
Claim 7
Dependent Claim
11 words
placing a continuous layer of said resin/abrasive mixture on a base,
Claim 8
Dependent Claim
11 words
placing a continuous layer of said filled resin on a base,
Claim 9
Dependent Claim
97 words
while the filled resin is supported on the base and is in a partially hardened condition in which it is capable of being permanently deformed upon application of pressure thereto and is nonsticky, molding the resin layer to alter the shape of said resin layer by moving a rotating shaping roller over an exposed surface of the resin layer and applying a deforming pressure onto said surface of said resin layer by means of the roller and thereby altering the shape of said resin layer until said exposed surface thereof has been deformed to a final profile,
Claim 10
Dependent Claim
106 words
while the resin is supported on the base and is in a partially hardened condition in which it is capable of being permanently deformed upon application of pressure thereto and is nonsticky, a. molding the resin layer to alter the shape of said resin layer by moving a rotating shaping roller over an exposed surface of the resin layer and applying a deforming pressure onto said surface of said resin layer by means of the roller and thereby altering the shape of said resin layer until it has been deformed to a final profile, b. applying fine abrasive particles to said exposed surface of said layer,
Claim 11
Dependent Claim
52 words
causing the filled resin and the adhesive resin to harden slowly without changing the shape of the surface and with substantially no volume change to form a grinding member having a grinding surface of said final profile and to unite the filled resin layer to the base and to the abrasive particles.
Claim 12
Dependent Claim
20 words
A method as defined in claim 1 wherein said adhesive resin is the same as said resin of said layer.
Claim 13
Dependent Claim
29 words
A method as defined in claim 1 wherein said filler comprises coarse abrasive particles and wherein said abrasive particles subsequently applied to said profiled surface are fine abrasive particles.
Claim 14
Dependent Claim
47 words
causing the resin to harden slowly without changing the shape of the surface and with substantially no volume change to form a grinding member having a grinding surface of said final profile and to unite the resin layer to the base and to the fine abrasive particles.
Claim 15
Dependent Claim
74 words
causing the resin to harden slowly without changing the shape of the surface and with substantially no volume change to form a grinding member having a grinding surface of said final profile and to unite the resin to the base, said filler material comprising at least one substance imparting to said hardened resin layer at least one of the properties of thermal conductivity, electrical conductivity, heat resistance, shock resistance, wear resistance and ready wearability.
Claim 16
Dependent Claim
33 words
A method as defined in claim 1 wherein said filler imparts to said resin layer at least one of the properties of thermal conductivity, electrical conductivity, heat resistance, shock resistance and wear resistance.
Claim 17
Dependent Claim
46 words
A method as defined in claim 1 wherein said filler is selected from the group consisting of wood flour, chalk powder, marble flour, slate powder, silica flour, aluminum oxide, silicon carbide, diamond dust, nylon, asbestos powder, mica powder, graphite, comminuted metals, metal-coated particles, and mixtures thereof.
Claim 18
Dependent Claim
47 words
A method as defined in claim 1, wherein the base comprises a central supporting disc and the continuous resin layer is of an annular configuration disposed around the rim of the disc with the exposed surface of the layer constituting the peripheral surface of the annular layer.
Claim 19
Dependent Claim
72 words
A method as defined in claim 1, wherein the base comprises a central supporting disc and the continuous resin layer is of an annular configuration disposed around the rim of the disc, and wherein the exposed sUrface of the layer is rolled to said final profile while said disk is mounted in its operable grinding position, whereby the grinding member is produced already mounted and trued up in position ready for use.
Claim 20
Independent Claim
22 words
A method of making a grinding member having abrasive particles embedded in a synthetic resin substrate, the method comprising the steps of:
Claim 21
Dependent Claim
27 words
A method as defined in claim 10 wherein said fine abrasive particles are embedded in said exposed surface after it has been deformed to said final profile.
Claim 22
Dependent Claim
24 words
In a method of making a grinding member having abrasive particles embedded in a synthetic resin substrate, the improvement which comprises the steps of;
Claim 23
Dependent Claim
47 words
A method as defined in claim 12 wherein the filler material is selected from the group consisting of wood flour, chalk powder, marble flour, slate powder, silica flour, aluminium oxide, silicon carbide, diamond dust, nylon, asbestos powder, mica powder, graphite, comminuted metals, metal-coated particles, and mixtures thereof.
Claim 24
Dependent Claim
47 words
A method as defined in claim 12, wherein the base comprises a central supporting disc and the continuous resin layer is of an annular configuration disposed around the rim of the disc with the exposed surface of the layer constituting the peripheral surface of the annular layer.
Claim 25
Dependent Claim
72 words
A method as defined in claim 12, wherein the base comprises a central supporting disc and the continuous resin layer is of an annular configuration dispOsed around the rim of the disc, and wherein the exposed surface of the layer is rolled to said final profile while said disc is mounted in its operable grinding position, whereby the grinding member is produced already mounted and trued up in position ready for use.
Claim 26
Dependent Claim
47 words
A method as defined in claim 10 wherein the base comprises a central supporting disc and the continuous resin layer is of an annular configuration disposed around the rim of the disc with the exposed surface of the layer constituting the peripheral surface of the annular layer.
Claim 27
Dependent Claim
72 words
A method as defined in claim 10, wherein the base comprises a central supporting disc and the continuous resin layer is of an annular configuration disposed around the rim of the disc, and wherein the exposed surface of the layer is rolled to said final profile while said disc is mounted in its operable grinding position, whereby the grinding member is produced already mounted and trued up in position ready for use.
Claim 28
Dependent Claim
17 words
A method as defined in claim 1 wherein said abrasive particles are sprayed onto said profiled surface.
Claim 29
Dependent Claim
24 words
A method as defined in claim 10 wherein the said fine abrasive particles are sprayed onto said exposed surface after it has been profiled.
Claim 30
Dependent Claim
29 words
A method as defined in claim 12 wherein abrasive particles are sprayed onto said exposed surface of said resin layer after profiling but before the resin layer has hardened.
References Cited (Backward Citations)
US3424566A
Cited
US3415635A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |