US5624068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diamond tools for rock drilling, metal cutting and wear part applications
Assignee: Diamant Boart Stratabit SA
•
Filing: 1995-12-06
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Granted: 1997-04-29
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Expires: 2015-12-06
Abstract
Abstract The present invention relates to buttons, inserts and bodies for rock drilling, rock cutting, metal cutting and wear part applications. The buttons, inserts and bodies comprise cemented carbide provided with bodies and/or layers of CVD- or PVD-fabricated diamond and then HP/HT treated in the diamond stable area. The bodies of cemented carbide may have a uniform structure or a multi-structure containing eta-phase surrounded by a surface zone of cemented carbide free of eta-phase.
Inventors
- 👤 Mats G. Waldenstrom
- 👤 Udo K. R. Fischer
- 👤 Lars H. Hillert
- 👤 Mahlon D. Dennis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:09
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/46; E21B10/56; E21B10/567; E21B10/5676; B; B22; B22F; B22F7/00; B22F7/06; B23; B23P; B23P15/00; B23P15/28; C; C23; C23C; C23C14/00; C23C14/06; C23C14/0605; C23C14/0611; C23C14/58; C23C14/5806; C23C14/584; C23C16/00; C23C16/22; C23C16/26; C23C16/27; C23C16/56; Y; Y10; Y10S; Y10S76/00; Y10S76/12; Y10T; Y10T407/00; Y10T407/27; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
68 words
A method of making a composite body for rock drilling, metal cutting and wear part applications comprising prefabricating a diamond portion by CVD-or PVD-technique, prefabricating a cemented carbide portion, and bonding the diamond portion and cemented carbide portion by high pressure and high temperature, the diamond portion being a diamond body which is embedded in at least a part of the cemented carbide portion prior to said bonding.
Claim 2
Independent Claim
68 words
A method of making a composite body for rock drilling, metal cutting and wear part applications comprising prefabricating a diamond portion by CVD-or PVD-technique, prefabricating a cemented carbide portion, and bonding the diamond portion and cemented carbide portion by high pressure and high temperature, the diamond portion being a diamond body which is embedded in at least a part of the cemented carbide portion prior to said bonding.
Claim 3
Dependent Claim
14 words
The method of claim 1, wherein the composite body comprises a rock drilling insert.
Claim 4
Dependent Claim
14 words
The method of claim 1, wherein the composite body comprises a metal cutting insert.
Claim 5
Independent Claim
65 words
A method of making a composite body for rock drilling, metal cutting and wear part applications comprising prefabricating a diamond portion by CVD-or PVD-technique, prefabricating a cemented carbide portion, and, bonding the diamond portion and cemented carbide portion by high pressure and high temperature, the diamond portion being formed by application onto the cemented carbide portion prior to the high pressure and high temperature treatment.
Claim 6
Independent Claim
65 words
A method of making a composite body for rock drilling, metal cutting and wear part applications comprising prefabricating a diamond portion by CVD-or PVD-technique, prefabricating a cemented carbide portion, and, bonding the diamond portion and cemented carbide portion by high pressure and high temperature, the diamond portion being formed by application onto the cemented carbide portion prior to the high pressure and high temperature treatment.
Claim 7
Dependent Claim
14 words
The method of claim 4, wherein the composite body comprises a rock drilling insert.
Claim 8
Dependent Claim
14 words
The method of claim 4, wherein the composite body comprises a metal cutting insert.
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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) | 2000-04-28 | 2000-10-28 | 2001-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-28 | 2004-10-28 | 2005-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-28 | 2008-10-28 | 2009-04-29 | $7700.00 | Window Closed / Lapsed |