US2004089104A1PendingUtilityA1

Method for making a tool with H-shaped cross section

41
Priority: Nov 7, 2002Filed: Nov 7, 2002Published: May 13, 2004
Est. expiryNov 7, 2022(expired)· nominal 20-yr term from priority
Inventors:Chih-Ching Hsien
B21K 5/16
41
PatentIndex Score
0
Cited by
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References
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Claims

Abstract

A method for making a hand tool includes step of forging to form a shank of the tool with an H-shaped cross section, step 2 of a secondary forging to precisely form the shape as desired, step 3 of final fishing to grind a surface of the tool, and step 4 of completing the tool.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A method for making a hand tool, comprising: 
 step 1: rough forging to form a shank of the tool with an H-shaped cross section;    step 2: a secondary forging to precisely form the shape as desired;    step 3: final fishing to grind a surface of the tool, and    step 4: completing the tool.    
     
     
         2 . The method as claimed in  claim 1 , wherein a temperature used in step 2 is lower than that used in step 1.  
     
     
         3 . The method as claimed in  claim 1  further comprising a step for bending the tool.

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