Patent US5304223A successfully refreshed from Google Patents.
US5304223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structured abrasive article
Assignee: 3M Co
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Filing: 1993-03-08
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Granted: 1994-04-19
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Expires: 2013-03-08
Abstract
Abstract A coated abrasive article comprising a backing bearing on at least one major surface thereof abrasive composites comprising a plurality of abrasive grains dispersed in a binder. The binder serves as a medium for dispersing abrasive grains, and it may also bond the abrasive composites to the backing. The abrasive composites have a predetermined shape, e.g., pyramidal. The dimensions of a given shape can be made substantially uniform. Furthermore, the composites are disposed in a predetermined array. The predetermined array can exhibit some degree of repetitiveness. The repeating pattern of a predetermined array can be in linear form or in the form of a matrix. The coated abrasive article can be prepared by a method comprising the steps of: (1) introducing a slurry containing a mixture of a binder and a plurality of abrasive grains onto a production tool; (2) introducing a backing to the outer surface of the production tool such that the slurry wets one major surface of the backing to form an intermediate article; (3) at least partially curing or gelling the binder before the intermediate article departs from the outer surface of the production tool to form a coated abrasive article; and (4) removing said coated abrasive article from the production tool.
Inventors
- 👤 Jon R. Pieper
- 👤 Richard M. Olson
- 👤 Michael V. Mucci
- 👤 Gary L. Holmes
- 👤 Robert V. Heiti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:20
CPC Classifications
B; B24; B24D; B24D11/00; B24D3/00; B24D3/001; B24D3/002; B24D3/02; B24D3/20; B24D3/28
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
98 words
A method of making a coated abrasive article comprising the steps of: (1) introducing a slurry containing a mixture of a binder and a plurality of abrasive grains onto a production tool; (2) introducing a backing to the outer surface of the production tool such that the slurry wets one side of the backing to form an intermediate article; (3) at least partially curing or gelling the binder before the intermediate article departs from the outer surface of the production tool to form a coated abrasive article; and (4) removing the coated abrasive article from the production tool.
Claim 2
Independent Claim
98 words
A method of making a coated abrasive article comprising the steps of: (1) introducing a slurry containing a mixture of a binder and a plurality of abrasive grains onto a production tool; (2) introducing a backing to the outer surface of the production tool such that the slurry wets one side of the backing to form an intermediate article; (3) at least partially curing or gelling the binder before the intermediate article departs from the outer surface of the production tool to form a coated abrasive article; and (4) removing the coated abrasive article from the production tool.
Claim 3
Dependent Claim
13 words
The method of claim 1, wherein said binder is cured by radiation energy.
Claim 4
Dependent Claim
13 words
The method of claim 1, wherein said production tool is cylindrical in shape.
Claim 5
Dependent Claim
12 words
The method of claim 1, wherein said production tool is a belt.
Claim 6
Dependent Claim
13 words
The method of claim 1, wherein said binder is cured by thermal energy.
Claim 7
Dependent Claim
22 words
The method of claim 1, further including the step of fully curing the coated abrasive article after removal from the production tool.
Claim 8
Independent Claim
111 words
A method of making a coated abrasive article comprising the steps of: (1) introducing a slurry containing a mixture of a binder and plurality of abrasive grains on to a backing such that the slurry wets the front side of the backing to form an intermediate article; (2) introducing the intermediate article to a production tool having an outer surface, the outer surface of the production tool containing a specified pattern; (3) at least partially curing or gelling the binder before the intermediate article departs from the outer surface of the production tool to form a coated abrasive article; and (4) removing from the coated abrasive article from the production tool.
Claim 9
Independent Claim
111 words
A method of making a coated abrasive article comprising the steps of: (1) introducing a slurry containing a mixture of a binder and plurality of abrasive grains on to a backing such that the slurry wets the front side of the backing to form an intermediate article; (2) introducing the intermediate article to a production tool having an outer surface, the outer surface of the production tool containing a specified pattern; (3) at least partially curing or gelling the binder before the intermediate article departs from the outer surface of the production tool to form a coated abrasive article; and (4) removing from the coated abrasive article from the production tool.
Claim 10
Dependent Claim
13 words
The method of claim 7, wherein said binder is cured by radiation energy.
Claim 11
Dependent Claim
13 words
The method of claim 7, wherein said production tool is cylindrical in shape.
Claim 12
Dependent Claim
12 words
The method of claim 7, wherein said production tool is a belt.
Claim 13
Dependent Claim
13 words
The method of claim 7, wherein said binder is cured by thermal energy.
Claim 14
Dependent Claim
22 words
The method of claim 7, further including the step of fully curing the coated abrasive article after removal from the production tool.
Claim 15
Independent Claim
124 words
A method of abrading a surface of a workpiece comprising the steps of: (1) providing a coated abrasive article comprising a backing having attached to at least one major surface thereof, in an array having a non-random pattern, a plurality of precisely shaped abrasive composites, each of said composites comprising a plurality of abrasive grains dispersed in a binder, which binder provides the means of attachment of the composites to the backing; (2) placing the surface of said article having abrasive composites attached thereto in contact with the surface of said workpiece; and (3) moving at least one of the surface of said article or the surface of said workpiece with respect to the other so as to abrade the surface of said workpiece.
Claim 16
Independent Claim
124 words
A method of abrading a surface of a workpiece comprising the steps of: (1) providing a coated abrasive article comprising a backing having attached to at least one major surface thereof, in an array having a non-random pattern, a plurality of precisely shaped abrasive composites, each of said composites comprising a plurality of abrasive grains dispersed in a binder, which binder provides the means of attachment of the composites to the backing; (2) placing the surface of said article having abrasive composites attached thereto in contact with the surface of said workpiece; and (3) moving at least one of the surface of said article or the surface of said workpiece with respect to the other so as to abrade the surface of said workpiece.
Claim 17
Independent Claim
122 words
A method of abrading a surface of a workpiece comprising the steps of: (1) providing a coated abrasive article comprising a backing having attached to at least one major surface thereof, in an array having a non-random pattern, a plurality of precisely shaped abrasive composites, each of said composites comprising a plurality of abrasive grains dispersed in a binder, which binder is formed from a material curable by radiation energy; (2) placing the surface of said article having abrasive composites attached thereto in contact with the surface of said workpiece; and (3) moving at least one of the surface of said article or the surface of said workpiece with respect to the other so as to abrade the surface of said workpiece.
Claim 18
Independent Claim
122 words
A method of abrading a surface of a workpiece comprising the steps of: (1) providing a coated abrasive article comprising a backing having attached to at least one major surface thereof, in an array having a non-random pattern, a plurality of precisely shaped abrasive composites, each of said composites comprising a plurality of abrasive grains dispersed in a binder, which binder is formed from a material curable by radiation energy; (2) placing the surface of said article having abrasive composites attached thereto in contact with the surface of said workpiece; and (3) moving at least one of the surface of said article or the surface of said workpiece with respect to the other so as to abrade the surface of said workpiece.
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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) | 1997-04-18 | 1997-10-18 | 1998-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-18 | 2001-10-18 | 2002-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-18 | 2005-10-18 | 2006-04-19 | $7700.00 | Window Closed / Lapsed |