Patent US3727778A successfully refreshed from Google Patents.
Patent US4169913A successfully refreshed from Google Patents.
US4169913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated tool steel and machining tool formed therefrom
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1978-03-01
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Granted: 1979-10-02
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Expires: 1998-03-01
Abstract
Abstract There is provided a coated tool steel having a tool steel substrate and at least one layer of a hard film overcoated on the substrate. The film consists of a B-1 type solid solution selected from carbides, nitrides and carbonitrides of at least one of titanium, zirconium or hafnium, and the breadth of the peak, at half maximum intensity, of Cu-Kα diffraction from the (200) plane of the film, being not less than 0.4 degree on a 2 θ scale. The invention further provides a machine tool having at least one cutting part thereof formed from the coated tool steel described above. The coated steel provided herein has excellent wear resistance.
Inventors
- 👤 Mitsunori Kobayashi
- 👤 Yoshihiko Doi
- 👤 Masaaki Tobioka
- 👤 Takaharu Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:00
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/148; C; C23; C23C; C23C14/00; C23C14/06; C23C30/00; Y; Y10; Y10S; Y10S428/00; Y10S428/911; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/24983; Y10T428/31
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
83 words
A coated tool steel comprising a tool steel substrate and at least one layer of a hard film overcoated on the substrate, the film consisting of a B-1 type solid solution selected from the group consisting of carbides, nitrides and carbonitrides of at least one of titanium, zirconium or hafnium, and the breadth of the peak, at half maximum intensity, of the Cu-Kα ray diffraction from the (200) plane of the film being not less than 0.4 degree on a 2 θ scale.
Claim 2
Dependent Claim
83 words
A coated tool steel comprising a tool steel substrate and at least one layer of a hard film overcoated on the substrate, the film consisting of a B-1 type solid solution selected from the group consisting of carbides, nitrides and carbonitrides of at least one of titanium, zirconium or hafnium, and the breadth of the peak, at half maximum intensity, of the Cu-Kα ray diffraction from the (200) plane of the film being not less than 0.4 degree on a 2 θ scale.
Claim 3
Dependent Claim
22 words
A coated tool as claimed in claim 1, wherein the solid solution contains at least one element selected from oxygen and boron.
Claim 4
Dependent Claim
85 words
A coated tool steel comprising a tool steel substrate and at least one layer of a hard film overcoated on the substrate, the film consisting of a B-1 type solid solution selected from the group consisting of titanium carbide, titanium nitride, titanium carbonitride, titanium oxycarbide, titanium oxycarbonitride, titanium oxynitride and titanium boronitride, and the breadth of the peak, at half maximum intensity, of the Cu-Kα ray diffraction from the (200) plane of the film being not less than 0.4 degree on a 2 θ scale.
Claim 5
Dependent Claim
85 words
A coated tool steel comprising a tool steel substrate and at least one layer of a hard film overcoated on the substrate, the film consisting of a B-1 type solid solution selected from the group consisting of titanium carbide, titanium nitride, titanium carbonitride, titanium oxycarbide, titanium oxycarbonitride, titanium oxynitride and titanium boronitride, and the breadth of the peak, at half maximum intensity, of the Cu-Kα ray diffraction from the (200) plane of the film being not less than 0.4 degree on a 2 θ scale.
Claim 6
Dependent Claim
94 words
A machining tool having at least at a cutting part thereof a coated tool steel comprising a tool steel substrate and at least one layer of a hard film overcoated on the substrate, the film consisting of a B-1 type solid solution selected from the group consisting of carbides, nitrides and carbonitrides of at least one of titanium, zirconium or hafnium, and the breadth of the peak, at half maximum intensity, of the Cu-Kα ray diffraction from the (200) plane of the film being not less than 0.4 degree on a 2 θ scale.
Claim 7
Dependent Claim
94 words
A machining tool having at least at a cutting part thereof a coated tool steel comprising a tool steel substrate and at least one layer of a hard film overcoated on the substrate, the film consisting of a B-1 type solid solution selected from the group consisting of carbides, nitrides and carbonitrides of at least one of titanium, zirconium or hafnium, and the breadth of the peak, at half maximum intensity, of the Cu-Kα ray diffraction from the (200) plane of the film being not less than 0.4 degree on a 2 θ scale.
Claim 8
Dependent Claim
26 words
A machining tool as claimed in claim 4, wherein the solid solution contains at least one element selected from the group consisting of oxygen and boron.
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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) | 1982-10-01 | 1983-04-02 | 1983-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-01 | 1987-04-02 | 1987-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-01 | 1991-04-02 | 1991-10-02 | $7700.00 | Window Closed / Lapsed |