Patent US4826508A successfully refreshed from Google Patents.
US4826508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible abrasive coated article and method of making it
Assignee: Abrasive Technology NA Inc
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Filing: 1987-09-10
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Granted: 1989-05-02
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Expires: 2007-09-10
Abstract
Abstract In the production of an abrasive member, an apertured mask, preferably formed of a resin such as polyvinyl chloride, is applied to one surface of a length of flexible, preferably electrically conducting fabric. A metal, such as nickel, is electrolytically deposited on the fabric through the apertures in the mask in the presence of abrasive particles. The fabric may be in the form of a conductive mesh, in which case it can be laminated onto a tough backing material. Alternatively, tough backing material, for example made of poly-aramid yarn, can be rendered conductive by coating it with vaporized metal, the metal deposits being formed directly in the coated backing fabric. This process simplifies manufacture and allows production on a continuous basis with greater throughput at lower cost.
Inventors
- 👤 Alexander Schwartz
- 👤 Joseph Lazar
- 👤 Semyon Lvovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:32
CPC Classifications
C; C25; C25D; C25D15/00; B; B24; B24D; B24D11/00; B24D11/001; B24D11/005; B24D11/06; B24D18/00; B24D18/0018; B24D3/00; B24D3/001; B24D3/002; B24D3/02; B24D3/04; B24D3/06; B24D3/34
Claims Analysis
Total Claims: 63
Claim 1
Independent Claim
107 words
A method of making a flexible abrasive member, comprising providing a length of flexible fabric that has been treated to render it conductive, applying a flexible mask of non-electrically conductive material having a multitude of discrete openings therein to one surface of said conductive flexible fabric, placing the fabric with the mask applied thereto in an electrolytic bath such that the conductive fabric becomes the cathode thereof, and electrodepositing metal directly in said discrete openings onto said conductive flexible fabric in the presence of particulate abrasive material to form metal electrodeposits on said conductive fabric in said openings with the particulate abrasive material embedded in said electrodeposits.
Claim 2
Independent Claim
107 words
A method of making a flexible abrasive member, comprising providing a length of flexible fabric that has been treated to render it conductive, applying a flexible mask of non-electrically conductive material having a multitude of discrete openings therein to one surface of said conductive flexible fabric, placing the fabric with the mask applied thereto in an electrolytic bath such that the conductive fabric becomes the cathode thereof, and electrodepositing metal directly in said discrete openings onto said conductive flexible fabric in the presence of particulate abrasive material to form metal electrodeposits on said conductive fabric in said openings with the particulate abrasive material embedded in said electrodeposits.
Claim 3
Dependent Claim
25 words
A method as claimed in claim 1, in which said fabric is rendered conductive by the application of a metal layer to one surface thereof.
Claim 4
Dependent Claim
19 words
A method as claimed in claim 2, in which the mask comprises a lattice defining said multitude of openings.
Claim 5
Dependent Claim
15 words
A method as claimed in claim 2, in which the flexible fabric is a mesh.
Claim 6
Dependent Claim
21 words
A method as claimed in claim 4, in which the flexible fabric is in the form of a metallized resin mesh.
Claim 7
Dependent Claim
22 words
A method as claimed in claim 4, in which the flexible fabric comprises a polymer resin mesh laminated to a metal foil.
Claim 8
Dependent Claim
25 words
A method as claimed in claim 2, in which the mask is formed of polymeric resin laminated to said flexible fabric under heat and pressure.
Claim 9
Dependent Claim
15 words
A method as claimed in claim 7, in which the polymeric resin is polyvinyl chloride.
Claim 10
Dependent Claim
69 words
A method as claimed in claim 1, in which the flexible fabric is continuously passed through said electrolytic bath and the anodes of said bath are formed of said electrodeposited metal, whereby said metal is continuously deposited in the discrete openings during the passage of said fabric though said bath and the abrasive material is released in said bath during said electrodeposition to become embedded in said metal deposits.
Claim 11
Dependent Claim
14 words
A method as claimed in claim 2, in which the electrodeposit metal is nickel.
Claim 12
Dependent Claim
15 words
A method as claimed in claim 2, in which the particulate abrasive material is diamond.
Claim 13
Dependent Claim
15 words
A method as claimed in claim 4 in which the mesh is a polyester mesh.
Claim 14
Dependent Claim
17 words
A method as claimed in claim 5, in which the mesh is a metallized polyester resin mesh.
Claim 15
Dependent Claim
15 words
A method as claimed in claim 2 wherein said fabric is a tough backing material.
Claim 16
Dependent Claim
83 words
A method as claimed in claim 2 wherein said flexible fabric is rendered conductive by coating it with a vaporized metal such that the vaporized metal becomes firmly attached to the fabric to provide a conductive coating, said mask is applied to said conductive coating to expose only said discrete locations, and said metal is electrodeposited on said coating at said discrete locations in the presence of said particulate abrasive material such that said particulate abrasive material becomes embedded in said metal electrodeposits.
Claim 17
Dependent Claim
16 words
A method as claimed in claim 15 wherein said vaporized metal is sprayed onto said fabric.
Claim 18
Dependent Claim
18 words
A method as claimed in claim 16 wherein said vaporized metal is sprayed with an arc spray gun.
Claim 19
Dependent Claim
18 words
A method as claimed in claim 16 wherein said vaporized metal is sprayed with a plasma spray gun.
Claim 20
Dependent Claim
19 words
A method as claimed in claim 16 wherein said electrodeposited metal is nickel and said vaporized metal is copper.
Claim 21
Dependent Claim
17 words
A method as claimed in claim 15 wherein said fabric is made of a scoured polyaramid yarn.
Claim 22
Dependent Claim
16 words
A method as claimed in claim 20 wherein the yarn is made of poly(p-phenylene terephthalamide) fibre.
Claim 23
Dependent Claim
14 words
A method as claimed in claim 21 wherein the fabric is about 1500 denier.
Claim 24
Dependent Claim
20 words
A method as claimed in claim 15 wherein the mask is a plastisol mask applied by a silk screen process.
Claim 25
Dependent Claim
29 words
A method as claimed in claim 4 wherein said mesh bearing said metal deposits is subsequently laminated to a backing sheet comprising a woven fabric of a polyaramid yarn.
Claim 26
Dependent Claim
14 words
A method as claimed in claim 24 wherein the yarn is made of poly-p-phenyleneterephthalamide.
Claim 27
Dependent Claim
20 words
A method as claimed in claim 25 wherein said flexible fabric is laminated to said backing sheet with polyurethane adhesive.
Claim 28
Dependent Claim
18 words
A method as claimed in claim 26 wherein said fabric is made of yarn of about 1500 denier.
Claim 29
Dependent Claim
19 words
A method as claimed in claim 24, wherein said backing sheet is coated on both sides with polyurethane adhesive.
Claim 30
Dependent Claim
22 words
A method as claimed in claim 1 wherein said flexible fabric is rendered conductive by means of wires interwoven with non-conductive yarn.
Claim 31
Dependent Claim
23 words
A method as claimed in claim 29 wherein said wires are coated with non-conductive material except where said deposits are to be formed.
Claim 32
Dependent Claim
39 words
A method as claimed in claim 29 wherein said wires are completely coated with non-conductive material, and said non-conductive material is removed from the wires woven into the fabric at locations where said deposits are required prior to electrodeposition.
Claim 33
Dependent Claim
19 words
A method as claimed in claim 31 wherein said non-conductive material is removed by chemical etching through a mask.
Claim 34
Dependent Claim
18 words
A method as claimed in claim 31 wherein said non-conductive material is removed by irradiation through a mask.
Claim 35
Dependent Claim
20 words
A method as claimed in claim 2 wherein said metal layer comprises a metal foil laminated onto said one surface.
Claim 36
Dependent Claim
16 words
A method as claimed in claim 2 wherein said metal film is deposited by vapour deposition.
Claim 37
Dependent Claim
12 words
A method as claimed in claim 34 where said fabric is woven.
Claim 38
Dependent Claim
16 words
A method as claimed in claim 36 wherein said woven fabric is made of polyaramid yarn.
Claim 39
Dependent Claim
15 words
A method as claimed in claim 36 wherein said yarn is made of poly-p-(phenylene) terephthalamide.
Claim 40
Dependent Claim
15 words
A method as claimed in claim 38 wherein said mask also comprises a woven fabric.
Claim 41
Dependent Claim
17 words
A method as claimed in claim 39 wherein said woven fabric mask is made of poly-p-(phenylene) terephthalamide.
Claim 42
Dependent Claim
63 words
A flexible abrasive member comprising a length of flexible fabric that has been treated to render it conductive, an electrically non-conductive mask layer applied to one surface of said fabric, said non-conductive mask layer having a multitude of discrete openings therein, and electrodeposited metal adhering to said conductive fabric in each of the openings, said electrodeposited metal having particulate abrasive material embedded therein.
Claim 43
Dependent Claim
63 words
A flexible abrasive member comprising a length of flexible fabric that has been treated to render it conductive, an electrically non-conductive mask layer applied to one surface of said fabric, said non-conductive mask layer having a multitude of discrete openings therein, and electrodeposited metal adhering to said conductive fabric in each of the openings, said electrodeposited metal having particulate abrasive material embedded therein.
Claim 44
Dependent Claim
26 words
A member as claimed in claim 41 in which the flexible fabric is rendered conductive by means of a metal layer applied to one surface thereof.
Claim 45
Dependent Claim
21 words
A member as claimed in claim 41 in which the flexible fabric is in the form of a metallized resin mesh.
Claim 46
Dependent Claim
21 words
A member as claimed in claim 42 in which the metal layer is a metal foil laminated to said flexible fabric.
Claim 47
Dependent Claim
16 words
A member as claimed in claim 42 in which the mask is made of polyvinyl chloride.
Claim 48
Dependent Claim
14 words
A member as claimed in claim 41, in which the electrodeposited metal is nickel.
Claim 49
Dependent Claim
16 words
A member as claimed in claim 42, in which the particulate abrasive material is diamond grit.
Claim 50
Dependent Claim
16 words
A member as claimed in claim 44 in which the non-conductive mesh is a polyester mesh.
Claim 51
Dependent Claim
15 words
A member as claimed in claim 38 wherein the yarn is made of poly(p-(phenylene terephthalamide).
Claim 52
Dependent Claim
20 words
A member as claimed in claim 49 wherein said flexible fabric is laminated to said blocking sheet with polyurethane adhesive.
Claim 53
Dependent Claim
18 words
A member as claimed in claim 50 wherein said fabric is made of yarn of about 1500 denier.
Claim 54
Dependent Claim
19 words
A member as claimed in claim 38, wherein said backing sheet is coated on both sides with polyurethane adhesive.
Claim 55
Dependent Claim
14 words
A member as claimed in claim 38, wherein said particulate abrasive material is diamond.
Claim 56
Dependent Claim
41 words
An abrasive member as claimed in claim 38 comprising a coating of vaporized metal deposited on said fabric and firmly attached thereto, and said metal deposits having abrasive particles embedded therein being provided at said discrete locations on said metal coating.
Claim 57
Dependent Claim
43 words
An abrasive member as claimed in claim 42 wherein said layer comprises a film of vaporized metal deposited on said fabric and firmly attached thereto, and said metal deposits having abrasive particles embedded therein being provided at discrete locations on said metal layer.
Claim 58
Dependent Claim
15 words
An abrasive member as claimed in claim 55 wherein said poly-aramid yarn is poly(p-phenylene terephthalamide).
Claim 59
Dependent Claim
20 words
An abrasive member as claimed in claim 54 wherein said metal layer is copper and said metal deposits are nickel.
Claim 60
Dependent Claim
15 words
An abrasive member as claimed in claim 54 wherein said abrasive particles are diamond grit.
Claim 61
Dependent Claim
15 words
An abrasive member as claimed in claim 54 wherein said fabric formed into a belt.
Claim 62
Dependent Claim
13 words
A flexible abrasive member produced by the method as claimed in claim 1.
Claim 63
Dependent Claim
13 words
An abrasive belt comprising a flexible abrasive member as claimed in claim 60.
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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) | 1992-05-01 | 1992-10-31 | 1993-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-01 | 1996-10-31 | 1997-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-01 | 2000-10-31 | 2001-05-02 | $7700.00 | Window Closed / Lapsed |