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Patent Searching and Data


Title:
AXIAL FORCE CONTROL BOLT
Document Type and Number:
Japanese Patent JP2012057709
Kind Code:
A
Abstract:

To provide an axial force control bolt with which a fastened object can be fastened with a predetermined axial force or axial force for reaching to a plastic region, and with which whether the bolt is before or after plastic deformation can be sorted simply.

The axial force control bolt has a shaft 1A and a screw 1c, and a head 1b and enables control of axial force acting in the axial direction, wherein an axial force detection material 2 to be destroyed when an axial strain amount of the bolt 1 exceeds a predetermined value is attached on at least an outer surface of the axial part 1A of the bolt 1, and the axial force detection material 2 is attached while axial tension is previously applied to the bolt 1.


Inventors:
SHIMODAIRA TAKAYUKI
Application Number:
JP2010201118A
Publication Date:
March 22, 2012
Filing Date:
September 08, 2010
Export Citation:
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Assignee:
HITACHI CONSTRUCTION MACHINERY
International Classes:
F16B31/02
Attorney, Agent or Firm:
Kasuga Toshiaki
Inoki Yuichi