US4805586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dressing tool for grinding wheels
Assignee: Saint Gobain Diamantwerkzeuge GmbH and Co KG
•
Filing: 1987-07-30
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Granted: 1989-02-21
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Expires: 2007-07-30
Abstract
Abstract A dressing tool for grinding wheels includes a base body and a diamond coat which is formed of diamond grains embedded in a metallic bond. The diamond grains are artificially roughened so that their surface area is significantly enlarged and are arranged in the metallic bond with such density that the majority of grains are in direct contact with adjacent grains.
Inventors
- 👤 Dietrich Borse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:28
CPC Classifications
B; B24; B24B; B24B53/00; B24B53/12; B24D; B24D18/00; Y; Y10; Y10S; Y10S76/00; Y10S76/12
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
92 words
In a dressing tool for grinding wheels, comprising a base body and a diamond coat on said base body, said diamond coat including diamond grains held in a metallic bond, the improvement comprising said diamond grains being artificially roughened so that a surface area of said grains is enlarged by a factor of at least two as compared to a natural surface of diamond grains, said diamond grains being arranged in said coat with such a density that the majority of said diamond grains are in direct contact with adjacent diamond grains.
Claim 2
Dependent Claim
92 words
In a dressing tool for grinding wheels, comprising a base body and a diamond coat on said base body, said diamond coat including diamond grains held in a metallic bond, the improvement comprising said diamond grains being artificially roughened so that a surface area of said grains is enlarged by a factor of at least two as compared to a natural surface of diamond grains, said diamond grains being arranged in said coat with such a density that the majority of said diamond grains are in direct contact with adjacent diamond grains.
Claim 3
Dependent Claim
15 words
The dressing tool as defined in claim 1, wherein said diamond grains have pore-like indentations.
Claim 4
Dependent Claim
17 words
The dressing tool as defined in claim 2, wherein said indentations are formed by etching with metal.
Claim 5
Dependent Claim
18 words
The dressing tool as defined in claim 1, wherein said metallic bond is formed of an electro-plated metal.
Claim 6
Dependent Claim
14 words
The dressing tool as defined in claim 4, wherein said electro-plated metal is nickel.
Claim 7
Dependent Claim
14 words
The dressing tool as defined in claim 4, wherein said electro-plated metal is cobalt.
Claim 8
Dependent Claim
15 words
The dressing tool as defined in claim 4, wherein said electro-plated metal is nickel alloy.
Claim 9
Dependent Claim
15 words
The dressing tool as defined in claim 4, wherein said electro-plated metal is cobalt alloy.
Claim 10
Dependent Claim
19 words
The dressing tool as defined in claim 1, wherein said diamond grains are arranged in a single plane layer.
Claim 11
Dependent Claim
54 words
The dressing tool as defined in claim 1, wherein said diamond grains are arranged on top of one another to form a plurality of layers, the diamond grains of one layer engaging between the diamond grains of another layer and being in direct contact with grains lying alongside, below and above said one layer.
Claim 12
Dependent Claim
17 words
The dressing tool as defined in claim 1, wherein said diamond grains are of different grain sizes.
Claim 13
Dependent Claim
15 words
The dressing tool as defined in claim 1, wherein said diamond grains are synthetic diamonds.
Claim 14
Dependent Claim
15 words
The dressing tool as defined in claim 1, which is formed as a dressing slab.
Claim 15
Dependent Claim
39 words
The dressing tool as defined in claim 1, wherein said diamond grains are arranged in at least one layer which is provided with at least one wear protective layer in which diamond grains are held in an electro-plated metal.
Claim 16
Dependent Claim
19 words
The dressing tool as defined in claim 14, wherein said protective layer is of 0.1 to 1 mm thick.
Claim 17
Dependent Claim
14 words
The dressing tool as defined in claim 14, wherein said electro-plated metal is cobalt.
Claim 18
Dependent Claim
14 words
The dressing tool as defined in claim 14, wherein said electro-plated metal is nickel.
Claim 19
Dependent Claim
24 words
The dressing tool as defined in claim 14, wherein surface areas of the diamond grains in the wear protective layer are enlarged by etching.
Claim 20
Dependent Claim
23 words
The dressing tool as defined in claim 14, wherein the wear protective layer has a diamond concentration of 5 to 10 carat/cubic centimeter.
Claim 21
Dependent Claim
29 words
The dressing tool as defined in claim 14, wherein the wear protective layer is provided on a front side and a back side of said at least one layer.
Claim 22
Dependent Claim
24 words
The dressing tool as defined in claim 14, wherein the wear protective layer is provided on four sides of said at least one layer.
Claim 23
Dependent Claim
68 words
The dressing tool as defined in claim 14, wherein said at least one layer consists of roughened diamond grains of approximately the same size of 500 to 1,000 μm, and said protective layers each have approximately the same thickness as that of said at least one layer which is located between said protective layers which are composed of diamond grains of a size of up to 100 μm.
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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) | 1992-02-21 | 1992-08-22 | 1993-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-21 | 1996-08-22 | 1997-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-21 | 2000-08-22 | 2001-02-21 | $7700.00 | Window Closed / Lapsed |