Inventor: Akihiro Endo (Ohta, JP)
Assignee: Sakamoto Industry Co., Ltd. (Ohta, JP)

Method for forming tube end

Patent No. 6,725,698

Issued: April 27, 2004
Filed: December 3, 2001
Foreign Application Priority Data - filed in Japan: Jun 26, 2001 JP2001-192640 


At the time of spinning a tip reduced portion 3, an angle of inclination of the outer periphery of the tip reduced portion 3 with respect to an axis of a tube stock 2 is increased on a center side of the tube stock 2 and reduced on an end edge side thereof. By this, a generating line of an outer peripheral surface of the tip reduced portion 3 is made into a form like a center recessed curved surface.

Go Back for more representative patents.

Home || Intellectual Property || Patents || Trademarks || Copyrights

Brown & Michaels, PC
400 M & T Bank Building
118 North Tioga Street - The Commons
Ithaca, NY 14850
Phone: (607) 256-2000 Fax: (607) 273-2609