EP0133386A2
Expired / Lapsed
EP
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Polycrystalline diamond body with enhanced surface irregularities and methods of making the same
Assignee: Megadiamond Industries Inc
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Filing: 1984-06-22
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Granted: —
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Expires: 2004-06-22
Abstract
Abstract A polycrystalline diamond body with a plurality of faces having enhanced surface irregularities over at least a portion of at least one of the faces is disclosed. The polycrystalline diamond body with the enhanced surface irregularities attaches to other materials such as metal by conventional mounting techniques. The polycrystalline diamond bodies of this invention are without a carbide or metal backing. The pattern forming the enhanced surface irregularities of this invention can be predetermined or random. Similarly the pattern can be randomly distributed on the surface or positioned in a repeatable pattern. It is therefore not necessary that the surface irregularities be uniform in either shape or size. One method of forming the enhanced irregularities is during the press cycle during which the polycrystalline diamond is formed with screens, molds, or free standing bodies. The extent, form and location of the enhanced surface irregularities is controlled by the configuration of the screens, molds or free standing bodies. An alternative method to form enhanced surface irregularities in a polycrystalline diamond involves the use of an EDM machine, laser or other suitable techniques to form the anhanced irregularities after the polycrystalline diamond has been formed.
Inventors
- 👤 David Richard Hall
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 17:43
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/56; E21B10/567; E21B10/573; E21B10/5735; B; B23; B23B; B23B27/00; B23B27/14; B23B27/141; B23B27/145; B23B27/146; B23B27/18; B23B27/20; B23P; B23P5/00; B24; B24D; B24D18/00; B28; B28D; B28D1/00; B28D1/02; B28D1/12; B28D1/121; B23B2226/00; B23B2226/31; B23B2226/315; B23B2260/00; B23B2260/072; B23B2260/092; Y; Y10; Y10S; Y10S76/00; Y10S76/12; Y10T; Y10T407/00; Y10T407/26; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
32 words
A polycrystalline diamond body having a plurality of surfaces, characterized in that at least a portion of at least one (102, 202, 302, 902, 1002) of said surfaces has enhanced surface irregularities.
Claim 2
Dependent Claim
32 words
A polycrystalline diamond body having a plurality of surfaces, characterized in that at least a portion of at least one (102, 202, 302, 902, 1002) of said surfaces has enhanced surface irregularities.
Claim 3
Dependent Claim
40 words
A polycrystalline diamond body according to claim 1, characterized in that said one of said surfaces has a plurality of areas (902, 1002-1016) having enhanced surface irregularities and said plurality of areas are positioned in a repeatable or random pattern.
Claim 4
Dependent Claim
27 words
A polycrystalline diamond body according to claim 1 or 2, characterized in that said surface irregularities are in the form of a regular typically textured pattern (102).
Claim 5
Dependent Claim
28 words
A polycrystalline diamond body according to claim 3, characterized in that textured pattern comprises a plurality of interwoven strands forming crevices (107) and channels (106) across said surface.
Claim 6
Dependent Claim
57 words
A polycrystalline diamond body according to claim 4, characterized in that said crevices have a surface portion having a surface width and a subjacent portion having side portions subtending said surface portion wherein at least one plane intersecting said side portions and parallel to said surface portion has a width which is different from said surface width.
Claim 7
Dependent Claim
58 words
A polycrystalline diamond body according to claim 4 or 5 wherein said channels have a surface portion having a surface width and a subjacent portion having side portions subtending said surface portion,characterized in that at least one plane intersecting said side portions and parallel to said surface portion has a width which is different from said surface width.
Claim 8
Dependent Claim
27 words
A polycrystalline diamond body according to claim 1 or 2, characterized in that said surface irregularities are in the form of grooves (204) or cross-hatched grooves (304).
Claim 9
Dependent Claim
38 words
A polycrystalline diamond body according to claim 7, characterized in that each of said grooves has a base and two walls, each of said walls extending upward from said base at angles which are non-perpendicular to said base.
Claim 10
Dependent Claim
69 words
A polycrystalline diamond body according to claim 7, characterized in that each of said grooves has a surface portion having a width and a base subtending said surface portion and two walls, each of said walls extending upward from said base and at least one plane intersecting said walls and parallel to said surface portion having a width which is different from the width (y) of said surface portion.
Claim 11
Dependent Claim
38 words
A polycrystalline diamond body according to claim 7, characterized in that each of said grooves has a base and two walls, each of said walls extending upward from said base at angles which are perpendicular to said base.
Claim 12
Dependent Claim
29 words
A polycrystalline diamond body according to claim 1 or 2, characterized in that said enhanced surface irregularities are in the form of a random, typically a pitted, pattern (1124).
Claim 13
Dependent Claim
56 words
A polycrystalline diamond device comprising a mounting portion and a polycrystalline diamond body, said polycrystalline diamond body having a plurality of surfaces, characterized in that at least a portion of at least one (102, 202, 302, 902, 1002) of said surfaces has enhanced surface irregularities sufficient for attaching said polycrystalline diamond body to said mounting portion.
Claim 14
Dependent Claim
56 words
A polycrystalline diamond device comprising a mounting portion and a polycrystalline diamond body, said polycrystalline diamond body having a plurality of surfaces, characterized in that at least a portion of at least one (102, 202, 302, 902, 1002) of said surfaces has enhanced surface irregularities sufficient for attaching said polycrystalline diamond body to said mounting portion.
Claim 15
Independent Claim
80 words
A method for making a polycrystalline diamond body according to any one of claims 1-11, characterized in that it comprises : placing diamond source material onto surface irregularities enhancing means ; subjecting said diamond source material and said enhancing means to temperature and pressure conditions sufficient for forming polycrystalline diamond growth onto said enhancing means; and removing said enhancing means to form enhanced surface irregularities over at least a portion of at least one surface of said polycrystalline diamond body.
Claim 16
Dependent Claim
18 words
A method according to claim 13, characterized in that said enhancing means are removed in a chemical bath.
Claim 17
Independent Claim
90 words
A method for making a polycrystalline diamond body according to any one of claims 1-11, characterized in that it comprises : placing diamond source material into a containment vessel of a high pressure press ; subjecting said diamond source material to temperature and pressure conditions sufficient for forming a polycrystalline diamond body having a plurality of surfaces; removing said polycrystalline diamond body from said containment vessel of said press; and forming enhanced irregularities over at least a portion of at least one of said surfaces of said polycrystalline diamond body.
Claim 18
Independent Claim
58 words
A method for making a polycrystalline diamond body according to any one of claims 1 - 11, characterized in that it comprises subjecting diamond source material to temperatures and pressure conditions sufficient for forming polycrystalline diamond having a plurality of surfaces; and later enhancing surface irregularities over at least a portion of at least one of said surfaces.
Claim 19
Independent Claim
117 words
A system for forming a polycrystalline diamond body according to any one of claims 1 - 11, characterized in that it comprises : a high pressure and temperature press having a containment vessel ; enhancing means having a plurality of surfaces with at least a portion of at least one of said surfaces having a surface pattern and positioned within said containment vessel ; diamond source material positioned upon said surface of said enhancing means ; press control means for controlling the pressure and temperature within said containment vessel for forming polycrystalline diamond grown onto said enhancing means ; said enhanced surface irregularities of said polycrystalline diamond body being substantially the area vacated by said enhancing means.
Claim 20
Dependent Claim
24 words
A system as in claim 17, characterized in that said surface pattern of said enhancing means is a series of grooves or a screen.
References Cited (Backward Citations)
No citation records indexed.
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