Patent US5454844A successfully refreshed from Google Patents.
US5454844A
Expired / Lapsed
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Abrasive article, a process of making same, and a method of using same to finish a workpiece surface
Assignee: 3M Co
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Filing: 1993-10-29
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Granted: 1995-10-03
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Expires: 2013-10-29
Abstract
Abstract An abrasive article having a sheet-like structure having a major surface and having deployed in a fixed position thereon a plurality of abutting abrasive composites in an area spacing of at least 1,200 composites/cm 2 , each of the composites comprising a plurality of abrasive particles dispersed in a binder. The invention also relates to a method for reducing a surface finish of a workpiece surface using the abrasive article and a process for making the abrasive article of the invention.
Inventors
- 👤 Louis D. Hibbard
- 👤 Stanley B. Collins
- 👤 John D. Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:15
CPC Classifications
B; B24; B24D; B24D11/00; B24D3/00; B24D3/02; B24D3/20; B24D3/28; B24D3/34; B24D3/342; B24D3/344
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
50 words
An abrasive article comprising a sheet-like structure having a major surface and having deployed in a fixed position thereon a plurality of abutting abrasive composites in an area spacing of at least 1,200 composites/cm 2 , each of said composites comprising a plurality of abrasive particles dispersed in a binder.
Claim 2
Dependent Claim
50 words
An abrasive article comprising a sheet-like structure having a major surface and having deployed in a fixed position thereon a plurality of abutting abrasive composites in an area spacing of at least 1,200 composites/cm 2 , each of said composites comprising a plurality of abrasive particles dispersed in a binder.
Claim 3
Dependent Claim
26 words
The abrasive article of claim 1, wherein said plurality of composites are deployed in an area spacing of at least about 3,000 abrasive composites/cm 2 .
Claim 4
Dependent Claim
26 words
The abrasive article of claim 1, wherein said plurality of composites are deployed in an area spacing of at least about 4,600 abrasive composites/cm 2 .
Claim 5
Dependent Claim
26 words
The abrasive article of claim 1, wherein said plurality of composites are deployed in an area spacing of at least about 7,700 abrasive composites/cm 2 .
Claim 6
Dependent Claim
26 words
The abrasive article of claim 1, wherein said plurality of composites are deployed in an area spacing of at least about 8,850 abrasive composites/cm 2 .
Claim 7
Dependent Claim
26 words
The abrasive article of claim 1, wherein said plurality of composites are deployed in an area spacing of from 1,200 to 10,000 abrasive composites/cm 2 .
Claim 8
Dependent Claim
21 words
The abrasive article of claim 1, wherein each said composite has a precise shape defined by a distinct and discernible boundary.
Claim 9
Dependent Claim
34 words
The abrasive article of claim 1, wherein said composites each has a precise three-dimensional shape defined by a distinct and discernible boundary, wherein said plurality of abutting composites all have an identical three-dimensional shape.
Claim 10
Dependent Claim
22 words
The abrasive article of claim 1, wherein each said composite has a geometrical shape selected from pyramidal shape and truncated pyramidal shape.
Claim 11
Dependent Claim
15 words
The abrasive article of claim 1, wherein each said composite has a truncated pyramidal shape.
Claim 12
Dependent Claim
48 words
The abrasive article of claim 1, wherein said composite has a shape selected from the group consisting of pyramidal and truncated pyramidal, wherein said shape comprises a base side in contact with said major surface bounded by base side edges having lengths from about 100 to 500 micrometers.
Claim 13
Dependent Claim
29 words
The abrasive article of claim 1 wherein said plurality of composites are deployed in an area spacing between about 4,515 abrasive composites/cm 2 to 10,000 abrasive composites/cm 2 .
Claim 14
Dependent Claim
50 words
The abrasive article of claim 1, wherein each said composite comprises a precise, three-dimensional shape including (i) a base side in planar contact with said major surface, said base side having a first cross-sectional area, and (ii) a distal end spaced from said base side having a second cross-sectional area.
Claim 15
Dependent Claim
17 words
The abrasive article of claim 13, wherein said first cross-sectional area is greater than said second cross-sectional
Claim 16
Dependent Claim
15 words
The abrasive article of claim 13, wherein said precise, three-dimensional shape comprises a tapered shape.
Claim 17
Dependent Claim
25 words
The abrasive article of claim 13, wherein each said composite has substantially a same height as measured between said base said and said distal end.
Claim 18
Dependent Claim
17 words
The abrasive article of claim 16, wherein said same height is between about 25 and 200 micrometers.
Claim 19
Dependent Claim
51 words
An abrasive belt article comprising an endless sheet-like structure having a major surface and having deployed in a fixed position thereon a plurality of abutting abrasive composites in area spacing of at least 1,200 composites/cm 2 , each of said composites comprising a plurality of abrasive particles dispersed in a binder.
Claim 20
Dependent Claim
51 words
An abrasive belt article comprising an endless sheet-like structure having a major surface and having deployed in a fixed position thereon a plurality of abutting abrasive composites in area spacing of at least 1,200 composites/cm 2 , each of said composites comprising a plurality of abrasive particles dispersed in a binder.
References Cited (Backward Citations)
JPS62255069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-10-02 | 1999-04-03 | 1999-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-10-02 | 2003-04-03 | 2003-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-10-02 | 2007-04-03 | 2007-10-03 | $7700.00 | Window Closed / Lapsed |