CA2317234A1 - Amorphous diamond coating of blades - Google Patents
Amorphous diamond coating of blades Download PDFInfo
- Publication number
- CA2317234A1 CA2317234A1 CA002317234A CA2317234A CA2317234A1 CA 2317234 A1 CA2317234 A1 CA 2317234A1 CA 002317234 A CA002317234 A CA 002317234A CA 2317234 A CA2317234 A CA 2317234A CA 2317234 A1 CA2317234 A1 CA 2317234A1
- Authority
- CA
- Canada
- Prior art keywords
- blade
- inclined surfaces
- plasma stream
- angle
- deposition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011248 coating agent Substances 0.000 title abstract 2
- 238000000576 coating method Methods 0.000 title abstract 2
- 229910003460 diamond Inorganic materials 0.000 title 1
- 239000010432 diamond Substances 0.000 title 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 3
- 229910052799 carbon Inorganic materials 0.000 abstract 3
- 230000008021 deposition Effects 0.000 abstract 3
- 238000010891 electric arc Methods 0.000 abstract 1
- 229910021385 hard carbon Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Landscapes
- Physical Vapour Deposition (AREA)
- Dry Shavers And Clippers (AREA)
Abstract
The invention provides improved razors, razor blades, and processes for producing razor blades or similar cutting tools with sharp and durable cutting edges. With this invention a hard carbon coating is applied to a blade having a cutting edge bounded by a first inclined surface and a second inclined surface, with an included blade angle enclosed by the inclined surfaces. An arc discharge is applied to an evaporable carbon surface of a cathode to generate a plasma stream of vaporized carbon in a generally directional stream resolvable into a set of roughly parallel lines.
The blade to be coated is oriented within the plasma stream so that an angle measured from a line bisecting the included blade angle and one of the set of roughly parallel lines is with the range of 20° to 90°, so as to exposes one of the inclined surfaces to the plasma stream at that angle. The blade is presented to the plasma stream so that deposition of vaporized carbon occurs on both inclined surfaces of the blade cutting edge. The deposition takes place at an approximately equal rate of deposition on the two inclined surfaces. The coated blade is stiff and rigid while maintaining a high aspect ratio.
The blade to be coated is oriented within the plasma stream so that an angle measured from a line bisecting the included blade angle and one of the set of roughly parallel lines is with the range of 20° to 90°, so as to exposes one of the inclined surfaces to the plasma stream at that angle. The blade is presented to the plasma stream so that deposition of vaporized carbon occurs on both inclined surfaces of the blade cutting edge. The deposition takes place at an approximately equal rate of deposition on the two inclined surfaces. The coated blade is stiff and rigid while maintaining a high aspect ratio.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US23292894A | 1994-04-25 | 1994-04-25 | |
| US232,928 | 1994-04-25 | ||
| CA002188022A CA2188022C (en) | 1994-04-25 | 1995-04-21 | Amorphous diamond coating of blades |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002188022A Division CA2188022C (en) | 1994-04-25 | 1995-04-21 | Amorphous diamond coating of blades |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2317234A1 true CA2317234A1 (en) | 1995-11-02 |
| CA2317234C CA2317234C (en) | 2002-03-26 |
Family
ID=25678740
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002317235A Expired - Fee Related CA2317235C (en) | 1994-04-25 | 1995-04-21 | Amorphous diamond coating of blades |
| CA002317234A Expired - Fee Related CA2317234C (en) | 1994-04-25 | 1995-04-21 | Amorphous diamond coating of blades |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002317235A Expired - Fee Related CA2317235C (en) | 1994-04-25 | 1995-04-21 | Amorphous diamond coating of blades |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA2317235C (en) |
-
1995
- 1995-04-21 CA CA002317235A patent/CA2317235C/en not_active Expired - Fee Related
- 1995-04-21 CA CA002317234A patent/CA2317234C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2317234C (en) | 2002-03-26 |
| CA2317235C (en) | 2002-03-26 |
| CA2317235A1 (en) | 1995-11-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20140422 |