US6327784B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing a cutting member having an auxiliary layer
Assignee: US Philips Corp
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Filing: 1999-12-22
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Granted: 2001-12-11
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Expires: 2019-12-22
Abstract
Abstract The invention relates to a method of manufacturing a cutting member ( 3 ). According to the method, a single side 9 of a carrier 1 of the cutting member is provided with an auxiliary layer ( 11 ). The carrier is provided with a cutting edge ( 7 ) by means of an electrochemical machining device ( 19 ), an electrode ( 21 ) of the electrochemical machining device being arranged on a side ( 15 ) of the carrier remote from the auxiliary layer. According to the invention, the auxiliary layer is provided as far as the cutting edge to be provided on the carrier, and, after the cutting edge has been provided on the carrier, the auxiliary layer is maintained on the carrier as a layer which is functional for the cutting member. In this manner, the auxiliary layer has a double function and is thus utilized in a better way. In a preferred embodiment, the auxiliary layer mainly comprises SiO 2 and has a thickness below 200 nm, preferably below 100 nm. In this embodiment, an edge ( 33 ) of the auxiliary layer, which is present at the location of the cutting edge of the carrier, constitutes an auxiliary cutting edge or even a main cutting edge of the cutting member, so that the cutting member has improved cutting properties and an improved service life. The cutting member is used in a shaving head ( 37 ) according to the invention and in a shaving device ( 35 ) according to the invention, which shaving device comprises a shaving head. The shaving head further comprises a manipulator ( 51 ) which is arranged near the cutting edge of the cutting member for moving hairs ( 75 ) along the cutting edge during cutting. In this manner, the auxiliary layer of the cutting member also is a protective layer protecting against wear, corrosion and providing mechanical resistance.
Inventors
- 👤 Hermanus S. J. Altena
- 👤 Maarten Brussee
- 👤 Foppe Kramer
- 👤 Johan Pragt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:50
CPC Classifications
B; B26; B26B; B26B19/00; B26B21/00; B26B21/54; B26B21/58; B26B21/60; B23; B23H; B23H9/00; B23H9/08
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
188 words
A method of manufacturing a cutting member comprising the steps: providing an auxiliary layer on one side of a cutting member, then providing said cutting member with a cutting edge by means of an electrochemical processing device, said cutting member being arranged in such a manner with respect to an electrode of the electrochemical processing device that the auxiliary layer faces away from the electrode, said auxiliary layer being applied as far as the cutting edge to be provided on the cutting member and being preserved, after provision of the cutting edge, as a functional auxiliary layer for said cutting member, providing a side of said cutting member, remote from the auxiliary layer, with a first wedge-shaped part having a relatively small wedge angle, by means of a mechanical material-removing device, said first wedge-shaped part situated at a distance from the cutting edge, then, providing said side, remote from the auxiliary layer, with a second wedge-shaped part having a relatively large wedge angle, said second wedge shaped part extending between the cutting edge and said first wedge-shaped part and being formed by means of the electrochemical processing device.
Claim 2
Independent Claim
188 words
A method of manufacturing a cutting member comprising the steps: providing an auxiliary layer on one side of a cutting member, then providing said cutting member with a cutting edge by means of an electrochemical processing device, said cutting member being arranged in such a manner with respect to an electrode of the electrochemical processing device that the auxiliary layer faces away from the electrode, said auxiliary layer being applied as far as the cutting edge to be provided on the cutting member and being preserved, after provision of the cutting edge, as a functional auxiliary layer for said cutting member, providing a side of said cutting member, remote from the auxiliary layer, with a first wedge-shaped part having a relatively small wedge angle, by means of a mechanical material-removing device, said first wedge-shaped part situated at a distance from the cutting edge, then, providing said side, remote from the auxiliary layer, with a second wedge-shaped part having a relatively large wedge angle, said second wedge shaped part extending between the cutting edge and said first wedge-shaped part and being formed by means of the electrochemical processing device.
Claim 3
Dependent Claim
18 words
A method as claimed in claim 1 , characterized in that the auxiliary layer comprises SiO 2 .
Claim 4
Dependent Claim
19 words
A method as claimed in claim 2 , characterized in that the auxiliary layer also comprises ZrO 2 .
Claim 5
Dependent Claim
20 words
A method as claimed in claim 1 , characterized in that the auxiliary layer has a thickness below 200 nm.
Claim 6
Dependent Claim
20 words
A method as claimed in claim 4 , characterized in that the auxiliary layer has a thickness below 100 nm.
Claim 7
Dependent Claim
25 words
A method as claimed in claim 1 , characterized in that the cutting member is plate-shaped and is provided with a substantially straight cutting edge.
Claim 8
Dependent Claim
38 words
A method as claimed in claim 6 , characterized in that the wedge angle of the first wedge-shaped part ranges between 15° and 30°, while the wedge angle of the second wedge-shaped part ranges between 30° and 60°.
Claim 9
Dependent Claim
89 words
A cutting member comprising a plate-shaped carrier provided with a cutting edge, said carrier provided, only on one side, with an auxiliary layer, said auxiliary layer extending as far as the cutting edge, a side of the cutting edge facing away from said auxiliary layer provided with a first wedge-shaped part, having a relatively small wedge angle and situated at a distance from the cutting edge and with a second wedge-shaped part having a relatively large wedge angle and extending between the cutting edge and the first wedge-shaped part.
Claim 10
Dependent Claim
89 words
A cutting member comprising a plate-shaped carrier provided with a cutting edge, said carrier provided, only on one side, with an auxiliary layer, said auxiliary layer extending as far as the cutting edge, a side of the cutting edge facing away from said auxiliary layer provided with a first wedge-shaped part, having a relatively small wedge angle and situated at a distance from the cutting edge and with a second wedge-shaped part having a relatively large wedge angle and extending between the cutting edge and the first wedge-shaped part.
Claim 11
Dependent Claim
19 words
A cutting member as claimed in claim 8 , characterized in that the auxiliary layer comprises SiO 2 .
Claim 12
Dependent Claim
20 words
A cutting member as claimed in claim 9 , characterized in that the auxiliary layer also comprises ZrO 2 .
Claim 13
Dependent Claim
22 words
A cutting member as claimed in claim 8 , characterized in that the auxiliary layer has a thickness less than 200 nm.
Claim 14
Dependent Claim
21 words
A cutting member as claimed in claim 11 , characterized in that the auxiliary layer has a thickness below 100 nm.
Claim 15
Dependent Claim
39 words
A cutting member as claimed in claim 8 , characterized in that the wedge angle of the first wedge-shaped part ranges between 15° and 30°, while the wedge angle of the second wedge-shaped part ranges between 30° and 60°.
Claim 16
Dependent Claim
100 words
A shaving head comprising a cutting member, which is provided with a carrier and a cutting edge for cutting hairs growing from skin, and a manipulator by means of which, in use, hairs can be moved along the cutting edge of the cutting member during cutting, the cutting edge of the cutting member and the manipulator adjoining each other and being displaceable relatively to each other in a direction parallel to the cutting edge, characterized in that the cutting member is a cutting member as claimed in claim 8 , the auxiliary layer of the cutting member facing the manipulator.
Claim 17
Dependent Claim
113 words
A shaver comprising a shaving head provided with a cutting member, which is provided with a carrier and a cutting edge for cutting hairs growing from skin, and a manipulator by means of which, in use, hairs can be moved along the cutting edge of the cutting member during cutting, the cutting edge of the cutting member and the manipulator adjoining each other, and the shaver being provided with a driving device for displacing the cutting member and the manipulator of the shaving head with respect to each other in a direction parallel to the cutting edge, characterized in that the shaving head is a shaving head as claimed in claim 14 .
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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) | 2004-12-10 | 2005-06-11 | 2005-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-12-10 | 2009-06-11 | 2009-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-12-10 | 2013-06-11 | 2013-12-11 | $7700.00 | Window Closed / Lapsed |