US2005229399A1PendingUtilityA1

Razor blade and method of manufacture

46
Assignee: GILLETTE COMPANY A DELWARE CORPriority: Jul 18, 2000Filed: Jun 14, 2005Published: Oct 20, 2005
Est. expiryJul 18, 2020(expired)· nominal 20-yr term from priority
Inventors:Nicolae NeamtuStephen F. Hobbs
B21D 53/64B26B 21/565B26B 21/22B21D 53/645B23P 15/403B26B 21/165B26B 21/4068
46
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Claims

Abstract

An elongated stock material for use in manufacturing shaving razor blades, the material including an elongated, flat strip of metal having a front edge and back edge extending along its length, a sharpened cutting edge portion extending along the front edge, a weakened portion between the front edge and the back edge, a blade portion between the cutting edge portion and the weakened portion, and a removable portion between the weakened portion and the back edge. Also disclosed are blades and cartridges made from the material, and methods and apparatus making and using the material.

Claims

exact text as granted — not AI-modified
1 . An elongated stock material for use in manufacturing shaving razor blades, said material comprising 
 an elongated, flat strip of metal having a front edge and back edge extending along its length,    a sharpened cutting edge portion extending along said front edge,    a weakened portion between said front edge and said back edge,    a blade portion between said cutting edge portion and said weakened portion,    a removable portion between said weakened portion and said back edge, and    wherein said removable portion is offset from said blade portion along a plane extending backwards from said sharpened cutting edge centrally through said blade portion.    
   
   
       2 . The material of  claim 1  wherein said weakened portion has a reduced thickness compared to said blade portion and said removable portion.  
   
   
       3 . The material of  claim 1  wherein said weakened portion has a first notch portion on one side.  
   
   
       4 . The material of  claim 3  wherein said weakened portion has a second notch portion on the other side.  
   
   
       5 . The material of  claim 3  wherein said notch portions are offset with respect to each other.  
   
   
       6 . The material of  claim 5  wherein each said notch portion has a steep surface and a gradually deflecting surface.  
   
   
       7 . The material of  claim 1  wherein said weakened portion is located between ¼ and ¾ of the distance from said front edge to said back edge.  
   
   
       8 - 29 . (canceled)

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