Patent US1671213A successfully refreshed from Google Patents.
Patent US5011509A successfully refreshed from Google Patents.
US5011509A
Expired / Lapsed
US
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Composite compact with a more thermally stable cutting edge and method of manufacturing the same
Assignee: Diamond Innovations Inc
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Filing: 1989-08-07
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Granted: 1991-04-30
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Expires: 2009-08-07
Abstract
Abstract A compact blank for use in operations that require very high abrasion resistance and a thermally stable cutting edge is disclosed. The compact comprises a substrate formed of tungsten carbide or other hard material with a polycrystalline diamond layer bonded to the substrate. The diamond layer is fabricated by chemical vapor deposition and then subsequently bonded to the tungsten carbide substrate by the application of high pressure and high temperature at diamond stable conditions.
Inventors
- 👤 Robert H. Frushour
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:25
CPC Classifications
B; B24; B24D; B24D3/00; B24D3/02; B24D3/04; B24D3/06; B24D3/10; C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/5001; C04B41/5002; C04B41/80; C04B41/81; C04B41/85; E; E21; E21B; E21B10/00; E21B10/46; E21B10/56; E21B10/567
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
47 words
A composite body comprising: a diamond material layer formed by chemical vapor deposition as a single, well bonded body and having a first surface; a substrate; and the first surface of the diamond material layer and the substrate being bonded together under high pressure and high temperature.
Claim 2
Dependent Claim
47 words
A composite body comprising: a diamond material layer formed by chemical vapor deposition as a single, well bonded body and having a first surface; a substrate; and the first surface of the diamond material layer and the substrate being bonded together under high pressure and high temperature.
Claim 3
Dependent Claim
17 words
The composite body of claim 1 wherein the diamond layer has a thickness greater than 0.001 inch
Claim 4
Independent Claim
74 words
A method of manufacturing a composite body comprising the steps of: forming a diamond material layer by chemical vapor deposition as a single, well bonded body on a graphite substrate; mounting the diamond material layer on a cemented metal carbide substrate; and subjecting the diamond material layer and the cemented metal carbide substrate to high pressure and high temperature to form a bond between the diamond material layer and the cemented metal carbide substrate.
Claim 5
Independent Claim
74 words
A method of manufacturing a composite body comprising the steps of: forming a diamond material layer by chemical vapor deposition as a single, well bonded body on a graphite substrate; mounting the diamond material layer on a cemented metal carbide substrate; and subjecting the diamond material layer and the cemented metal carbide substrate to high pressure and high temperature to form a bond between the diamond material layer and the cemented metal carbide substrate.
Claim 6
Dependent Claim
21 words
The method of claim 3, in which the pressure is at least 40 kilobars and the temperature is above 1250° C.
Claim 7
Dependent Claim
29 words
The method of claim 3, wherein the diamond material layer is formed by depositing the diamond material on a material other than graphite subsequently removed from the diamond material.
Claim 8
Dependent Claim
17 words
The method of claim 3 in which the diamond layer has a thickness greater than 0.001 inch.
Claim 9
Dependent Claim
73 words
A composite body formed by the process comprising the steps of: forming a diamond material layer by chemical vapor deposition as a single, well bonded body on a substrate; mounting the diamond material layer on a cemented metal carbide substrate; and subjecting the diamond material layer and the cemented metal carbide substrate to high pressure and high temperature to form a bond between the diamond material layer and the cemented metal carbide substrate.
Claim 10
Dependent Claim
73 words
A composite body formed by the process comprising the steps of: forming a diamond material layer by chemical vapor deposition as a single, well bonded body on a substrate; mounting the diamond material layer on a cemented metal carbide substrate; and subjecting the diamond material layer and the cemented metal carbide substrate to high pressure and high temperature to form a bond between the diamond material layer and the cemented metal carbide substrate.
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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) | 1994-04-29 | 1994-10-29 | 1995-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-29 | 1998-10-29 | 1999-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-29 | 2002-10-29 | 2003-04-30 | $7700.00 | Window Closed / Lapsed |