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Patent Searching and Data

Document Type and Number:
Japanese Patent JP5482975
Kind Code:
An inner surface regulation tool includes a mandrel, a plug which is detachably connected to the mandrel, and a connection member which connects the plug and the mandrel by a magnetic force. One of the plug and the mandrel includes a column-shaped portion which extends in an axial direction of the one, and the other of the plug and the mandrel includes a joining hole which extends in an axial direction of the other and into which the column-shaped portion is inserted. In addition, the connection member is a permanent magnet which is attached to at least one of the column-shaped portion and the joining hole.

Yamane Koji
Kazumune Shimoda
Tomio Yamakawa
Yuji Inoue
Application Number:
Publication Date:
May 07, 2014
Filing Date:
August 22, 2013
Export Citation:
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Nippon Steel & Sumitomo Metal Corporation
International Classes:
B21B25/06; B21B19/04; B21C1/24; B21C3/16; B21C23/08; B21C25/04
Domestic Patent References:
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Sumio Tanai
Hiroshi Masui
Tomoo Katsumata

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