Patent US3898772A successfully refreshed from Google Patents.
US3898772A
Expired / Lapsed
US
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Material removal tool with multiple cutting edges
Assignee: Saint Gobain Diamantwerkzeuge GmbH and Co KG
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Filing: 1973-08-03
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Granted: 1975-08-12
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Expires: 1993-08-03
Abstract
Abstract A rotatable or reciprocable material removing tool having multiple cutting edges in which a plurality of cutting elements project from an outer surface of a base member of the tool and in which each cutting element comprises a cutting member composed of a homogeneous mass of crystalline diamond particles or crystalline boron nitride particles or a mixture of both, and a connecting member connecting the cutting member to the surface of the base member. Each cutting member forms at least one cutting edge of predetermined outline and the cutting elements are uniformly distributed on the surface of the base member in such a manner that the cutting edges are spaced from each other.
Inventors
- 👤 Wlodzimierz Sawluk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:39
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/48; E21B10/485; B; B23; B23C; B23C5/00; B23D; B23D61/00; B23D61/02; B23D61/04; B24; B24D; B24D5/00; B24D5/06; B24D5/12; B24D5/123; B28; B28D; B28D1/00; B28D1/02; B28D1/04; B28D1/041
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
174 words
In a material removing tool, a combination comprising a base member having an outer surface; and a plurality of cutting elements projecting from said outer surface, each of said cutting elements comprising a plate-shaped portion having a first surface and a plurality of substantially equal projections projecting substantially uniformly spaced from each other from said first surface and each having at least one cutting edge substantially parallel to and spaced from said one cutting edge on the other projections, said plate-shaped portion and said projections thereon being integrally formed from a homogeneous mass of crystalline hard particles of at least one material chosen from the group consisting of crystalline diamond particles and crystalline boron nitride particles, and a connecting member of cemented carbide integral with the surface of said plate-shaped portion opposite said first surface of each cutting element and connecting said cutting elements to said outer surface of said base member unifOrmly distributed on said outer surface with said at least one cutting edge on all projections extending substantially parallel to each other.
Claim 2
Dependent Claim
174 words
In a material removing tool, a combination comprising a base member having an outer surface; and a plurality of cutting elements projecting from said outer surface, each of said cutting elements comprising a plate-shaped portion having a first surface and a plurality of substantially equal projections projecting substantially uniformly spaced from each other from said first surface and each having at least one cutting edge substantially parallel to and spaced from said one cutting edge on the other projections, said plate-shaped portion and said projections thereon being integrally formed from a homogeneous mass of crystalline hard particles of at least one material chosen from the group consisting of crystalline diamond particles and crystalline boron nitride particles, and a connecting member of cemented carbide integral with the surface of said plate-shaped portion opposite said first surface of each cutting element and connecting said cutting elements to said outer surface of said base member unifOrmly distributed on said outer surface with said at least one cutting edge on all projections extending substantially parallel to each other.
Claim 3
Dependent Claim
24 words
A combination as defined in claim 1, wherein said cutting elements are arranged spaced from each other on said surface of said base member.
Claim 4
Dependent Claim
34 words
A combination as defined in claim 2, wherein said tool is a rotary tool having an outer substantially cylindrical surface, said cutting elements being arranged circumferentially spaced from each other on said cylindrical surface.
Claim 5
Dependent Claim
27 words
A combination as defined in claim 3, wherein said cutting elements are also spaced from each other in the direction of the axis of said cylindrical surface.
Claim 6
Dependent Claim
49 words
A combination as defined in claim 2, wherein said cutting tool is a rotary tool having an axis of rotation and said outer surface being a plane annular surface coaxial with said axis of rotation, said cutting elements being arranged angularly spaced from each other on said annular surface.
Claim 7
Dependent Claim
23 words
A combination as defined in claim 5, wherein said cutting elements are spaced angularly and radially from each other on said annular surface.
Claim 8
Dependent Claim
42 words
A combination as defined in claim 1, wherein said cutting edges of said projections extend transverse to the cutting direction of said tool, and wherein the length of said cutting edges is greater than that of the projections in said cutting direction.
Claim 9
Dependent Claim
40 words
A combination as defined in claim 2, wherein said connecting member of each cutting element extends substantially normal to said cutting direction of the tool and is arranged between the respective cutting member and said surface of said base member.
Claim 10
Dependent Claim
30 words
A combination as defined in claim 2, wherein said cutting elements are arranged on said outer surface of said base member spaced from each other in longitudinal and transverse rows.
Claim 11
Dependent Claim
34 words
A combination as defined in claim 1 wherein said projections are arranged spaced from each other in a plurality of transverse and longitudinal rows, wherein the transverse rows extend normal to the cutting direction.
Claim 12
Dependent Claim
28 words
A combination as defined in claim 10, wherein said transverse rows extend normal to the cutting direction of the tool and are spaced from each other a distance
Claim 13
Dependent Claim
39 words
A combination as defined in claim 1, wherein said projections are arranged in a plurality of spaced longitudinal and transverse rows, in which said transverse rows extend inclined at an acute angle to the cutting direction of the tool.
Claim 14
Dependent Claim
36 words
A combination as defined in claim 12, wherein said transverse rows extend inclined at an acute angle to the cutting direction of the tool and wherein said transverse rows are spaced from each other a distance
Claim 15
Dependent Claim
25 words
A combination as defined in claim 1, wherein said projections are prisms of square cross section forming cutting edges along the edges of the prism.
Claim 16
Dependent Claim
21 words
A combination as defined in claim 1, wherein said projections are pyramids forming cutting edges along the upwardly inclined edges thereof.
Claim 17
Dependent Claim
45 words
A combination as defined in claim 1, wherein said outer surface has a main surface portion from which said cutting elements project and transverse to said main surface portion an auxiliary surface portion, and including a layer of grinding material on said auxiliary surface portion.
Claim 18
Dependent Claim
39 words
A combination as defined in claim 1, wherein said plurality of cutting elements are arranged on said base member so that the connecting member of each cutting element is immediately adjacent to the connecting member of another cutting element.
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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) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |