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Patent Searching and Data


Title:
METHOD OF PRODUCING BLIND BOLT
Document Type and Number:
WIPO Patent Application WO/2010/058450
Kind Code:
A1
Abstract:
A method of producing a blind bolt, which can enhance production efficiency, while reducing the product cost of the blind bolt. The method of producing a blind bolt which can fasten another member to such a member as a hand does not reach the inside or the back side thereof comprises a planar portion-forming step (S1) of forming two planar portions (23) parallel with each other on one end portion of a circular rod material (4), a elongated hole-forming step (S2) of forming an elongated hole (22) penetrating through the planar portion (23) from one side to the other side by pressing, a latching piece-housing step (S4) of housing a latching piece (3) having a long side longer than the diameter of the circular rod material (4) in the elongated hole (22) in such a manner that the long side extends along the axial direction of the circular rod material (4), and a latching protrusion-forming step (S5) of forming latching protrusions (31) on each side of the latching piece (3) exposed from the elongated hole (22) so that the protrusions project to the opposite outsides with respect to the width direction of the elongated hole (22) at a predetermined interval in the axial direction of the circular rod material (4).

Inventors:
ITO KATSUO (JP)
Application Number:
JP2008/070920
Publication Date:
May 27, 2010
Filing Date:
November 18, 2008
Export Citation:
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Assignee:
KOYOKIZAI CO LTD (JP)
ITO KATSUO (JP)
International Classes:
F16B35/04; B21D28/32
Foreign References:
JP2006226295A2006-08-31
JP2002538391A2002-11-12
Attorney, Agent or Firm:
SAGAWA, Shingo et al. (JP)
Shingo Sagawa (JP)
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