Patent US4663223A successfully refreshed from Google Patents.
US4663223A
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Tearable flexible coated abrasive product
Assignee: Saint Gobain Abrasives Inc
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Filing: 1985-08-15
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Granted: 1987-05-05
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Expires: 2005-08-15
Abstract
Abstract The present invention provides a flexible, coated abrasive product having a fabric or cloth substrate. The fabric has a warp direction and a fill direction and is preferably woven. The finished coated abrasive product is manually tearable in the warp direction in a straight line. The product is characterized by having a tear strength across the warp direction that is at least twice the tear strength across the fill direction. Tearing of the present products takes place along, or contiguous to, a single yarn in the warp direction. The coated abrasive product of the invention is particularly useful in the form of belts, elongated sheets or rolls.
Inventors
- 👤 Paul R. Schweyen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:59
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/001; B24D3/002; B24D11/00; Y; Y10; Y10T; Y10T442/00; Y10T442/30; Y10T442/3179; Y10T442/322; Y10T442/3228
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
50 words
A flexible, woven, fabric backed coated abrasive product, said fabric having a warp direction and a fill direction, said product manually tearable in a straight line in the warp direction, said product having a tear strength across the warp direction at least twice the tear strength across the fill direction.
Claim 2
Dependent Claim
50 words
A flexible, woven, fabric backed coated abrasive product, said fabric having a warp direction and a fill direction, said product manually tearable in a straight line in the warp direction, said product having a tear strength across the warp direction at least twice the tear strength across the fill direction.
Claim 3
Dependent Claim
19 words
The product of claim 1 wherein the product is manually tearable along a single yarn in the warp direction.
Claim 4
Dependent Claim
15 words
The product of claim 1 wherein the product is in the form of a belt.
Claim 5
Dependent Claim
16 words
The product of claim 1 wherein the product is in the form of an elongated sheet.
Claim 6
Dependent Claim
15 words
The product of claim 1 wherein the product is in the form of a roll.
Claim 7
Dependent Claim
33 words
The product of claim 1 wherein said fabric is comprised of yarns having equal or substantially equal strength and has a higher thread count in the warp direction than in the fill direction.
Claim 8
Dependent Claim
27 words
The product of claim 1 wherein the fabric yarns running in the warp direction have a higher tenacity than the fabric yarns running in the fill direction.
Claim 9
Dependent Claim
29 words
The product of claim 1 wherein the fabric yarns running in the warp direction are plied yarns and the fabric yarns running in the fill direction are not plied.
Claim 10
Dependent Claim
15 words
The product of claim 1 wherein the construction of the fabric is a plain weave.
Claim 11
Dependent Claim
15 words
The product of claim 1 wherein the construction of the fabric is a twill weave.
Claim 12
Dependent Claim
15 words
The product of claim 1 wherein the construction of the fabric is a sateen weave.
References Cited (Backward Citations)
US4439482A
Cited
US4553982A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |