发明申请
- 专利标题: Razor Blade and Method of Manufacture
- 专利标题(中): 剃须刀和制造方法
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申请号: US12434852申请日: 2009-05-04
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公开(公告)号: US20100107425A1公开(公告)日: 2010-05-06
- 发明人: Henryk Bykowski , Stephan Fischer , Jochen Thoene
- 申请人: Henryk Bykowski , Stephan Fischer , Jochen Thoene
- 申请人地址: US MO St. Louis
- 专利权人: EVEREADY BATTERY COMPANY INC.
- 当前专利权人: EVEREADY BATTERY COMPANY INC.
- 当前专利权人地址: US MO St. Louis
- 主分类号: B26B21/56
- IPC分类号: B26B21/56 ; B21K21/00 ; B21D11/00 ; B26B21/54
摘要:
A method for making a razor blade having a bent portion is disclosed. The method includes: providing an elongated strip of stainless steel that can be 0.076 mm thick; hardening the strip; providing a cutting edge along an edge of the strip and providing coating(s) on the cutting edge. The stainless steel has a carbon content preferably between 0.45% and 0.55% by weight. The strip is separated lengthwise into discrete razor blades. The bent portion of the razor blade is then formed using a swivel bending process. When the razor blade is bent to define an included angle of 90 degrees between planar regions adjacent the bent portion and an inner surface having a radius about 0.3-0.35 mm, the outer surface of the bent portion is free from macro-cracks.
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