Title:
METHOD FOR THE PRODUCTION OF HAIRDRESSER'S SCISSORS, AND HAIRDRESSER'S SCISSORS
Document Type and Number:
WIPO Patent Application WO2004035242
Kind Code:
A3
Abstract:
The invention relates to a method for the production of hairdresser's scissors (1), wherein the scissor blades (23,33) are pre-deformed from blanks according to a specific degree of curvature in the direction facing away from the cutting edge. A hard metal material is then respectively welded in the form of a welding pass to the front faces of the scissor blades (23,33) which are directed towards each other in order to form the cutting edges (24,34). The curvature of the scissor blades (23,33) recedes as a result of heat action during the welding process. The welding passes are then ground in order to form cutting edges (23,24) and the scissor halves (2,3) are pre-straightened and are hardened. The hairdresser's scissors (1) are then straightened when hard in an assembled state. The invention also relates to hairdresser's scissors thus embodied. The cutting edges (24,34) are provided in the form of a full material extending along the entire thickness of the hairdresser's scissors (23,33), such that post-grinding or further straightening of the hairdresser's scissors is possible without incurring any losses in terms of functionality.
Inventors:
BECK CHRISTIAN (DE)
Application Number:
PCT/EP2003/011447
Publication Date:
May 27, 2004
Filing Date:
October 15, 2003
Export Citation:
Assignee:
BECK CHRISTIAN (DE)
International Classes:
B23K9/04; B23P15/40; B26B13/06; (IPC1-7): B23P15/40; B26B13/00; B21D53/64; B23K9/04; B23K31/02
Foreign References:
| DE3219260A1 | 1983-11-24 | |||
| US5069872A | 1991-12-03 | |||
| EP0156395A2 | 1985-10-02 | |||
| US1814959A | 1931-07-14 | |||
| US3827316A | 1974-08-06 | |||
| DE19909887A1 | 1999-10-07 |
Other References:
DATABASE WPI Section Ch Week 198549, Derwent World Patents Index; Class M13, AN 1985-306621, XP002275980
Download PDF:
Previous Patent: DEVICE FOR FREE THREE-DIMENSIONAL PROFILE FORMING
Next Patent: LUBRICANT CONTROL SYSTEM FOR METAL CASTING SYSTEM
Next Patent: LUBRICANT CONTROL SYSTEM FOR METAL CASTING SYSTEM