Patent Number: 6,332,302

Title: Impact bar and its manufacturing method

Abstract: An impact bar having a sectional shape including a cylindrical portion formed of a plate material has a flat rib portion formed by extending both ends of the plate material to an inner side of the cylindrical portion with the leading end of each end being close to or contacting the inner surface of the cylindrical portion. The resulting impact bar provides enhanced strength without an increase in weight.

Inventors: Asai; Katsuhiko (Konan, JP)

Assignee: Sanyo Machine Works, Ltd.

International Classification: B21C 37/08 (20060101); B21C 37/15 (20060101); B60J 5/04 (20060101); E04C 003/30 ()

Expiration Date: 12/25/2018