US4842937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of depositing a wear-protective layer on a cutting tool and wear protective layer produced by the method
Assignee: Winter CVD Technik GmbH
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Filing: 1988-02-26
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Granted: 1989-06-27
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Expires: 2008-02-26
Abstract
Abstract A wear-protective layer for cutting tools is formed by the chemical vapor deposition or chemical plasma deposition or plasma sputtering by depositing a plurality of layers to a support of the cutting tool to form a multilayer in which each successive layer remoter from the support has a higher elasticity module and a greater diamond portion than the preceding layer. The outermost layer is a layer of diamond.
Inventors
- 👤 Hans-Robert Meyer
- 👤 Hans-Joachim Wiemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:24
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/26; C23C16/27; C23C16/02; C23C16/0272; C23C16/029; C23C16/278; Y; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
96 words
A wear-protective layer for a support of a metallic or non-metallic hard material, said layer being formed by chemical vapor deposition or plasma deposition as a multilayer comprising a layer of diamond, and means for reducing a difference in elasticity between said support and said layer of diamond said means comprising plurality of layers arranged to be located between said support and said layer of diamond and formed so that each following layer remoter from said support has a greater diamond portion and a higher elasticity module than each preceding layer positioned below said remoter layer.
Claim 2
Dependent Claim
96 words
A wear-protective layer for a support of a metallic or non-metallic hard material, said layer being formed by chemical vapor deposition or plasma deposition as a multilayer comprising a layer of diamond, and means for reducing a difference in elasticity between said support and said layer of diamond said means comprising plurality of layers arranged to be located between said support and said layer of diamond and formed so that each following layer remoter from said support has a greater diamond portion and a higher elasticity module than each preceding layer positioned below said remoter layer.
Claim 3
Dependent Claim
25 words
The wear-protective layer as defined in claim 1, wherein said layer of diamond has a greater thickness than the layers lying below said outermost layer.
Claim 4
Dependent Claim
33 words
The wear-protective layer as defined in claim 1, wherein said layer has the thickness of 5 to 500 μm and the layers below said layer have the thicknesses from 2 to 50 μm.
Claim 5
Dependent Claim
42 words
The wear-protective layer as defined in claim 1, wherein each of said layers below said layer of diamond includes, in addition to said diamond portion, of a binder material selected from the group consisting of boride, nitride, silicide and carbides of metals.
Claim 6
Dependent Claim
31 words
The wear-protective layer as defined in claim 1, wherein each of said layers below said layer of diamond includes a binder material selected from the group consisting of nickel and cobalt.
Claim 7
Dependent Claim
20 words
The wear-protective layer as defined in claim 1, wherein said layers below said layer of diamond include different binder materials.
Claim 8
Dependent Claim
19 words
The wear-protective layer as defined in claim 1, wherein said support is a cutting insert of a cutting tool.
Claim 9
Dependent Claim
15 words
The wear-protective layer as defined in claim 7, wherein said tool is a milling cutter.
Claim 10
Dependent Claim
14 words
The wear-protective layer as defined in claim 7, wherein said tool is a saw.
Claim 11
Dependent Claim
16 words
The wear-protective layer as defined in claim 1, wherein said support is a form truing roller.
Claim 12
Dependent Claim
16 words
The wear-protective layer as defined in claim 1, wherein said support is formed as a blade.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-26 | 1992-12-26 | 1993-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-26 | 1996-12-26 | 1997-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-26 | 2000-12-26 | 2001-06-27 | $7700.00 | Window Closed / Lapsed |