Title:
SCREW EXTRACTING TOOL AND EXTRACTING METHOD
Document Type and Number:
Japanese Patent JP3722481
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a screw extracting tool in which a screw can be easily and securely extracted regardless if skillfulness exists or not without giving strong impact even when a cross recess is wholly crushed, and in which a tip part of a male screw part is hard to be broken.
SOLUTION: The screw extracting tool 1 has a tapered part 4 which is formed to be gradually contracted in outer diameter toward a tip at one end part of a tool main body 2. In a tip part of the tapered part 4, a male thread part 5 in an inverse spiral direction to a plus thread A to be extracted is engraved. A guide screw part 6 is formed in the same outer diameter for prescribed length at a tip part of the male thread part 5. A tip 6a of the guide screw part 6 is formed flat.
Inventors:
Iwao Yasuoka
Application Number:
JP2002358105A
Publication Date:
November 30, 2005
Filing Date:
December 10, 2002
Export Citation:
Assignee:
Mitsutomo Manufacturing Co., Ltd.
International Classes:
B25B27/18; (IPC1-7): B25B27/18
Domestic Patent References:
| JP2001162552A | ||||
| JP3130381U | ||||
| JP8505819A | ||||
| JP2001260047A |
Attorney, Agent or Firm:
Minoru Torinosu
Shinichi Nakajima
Shinichi Nakajima
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