Kayaba Kogyo Kabushiki Kaisha

Kenichi Kuga

Tetsuji Hayashi

This invention relates to a vane pump having a cover of simple construction and which permits reduction of production costs. A groove-shaped low pressure port,A and a branch groove,split into two are formed in the cover joined to a body. A pin extending by a predetermined amount from an end face of the body is implanted in a side plate. A throughhole through which the pin passes is formed in a cam ring, and a concave part,of predetermined depth for engaging with the end of the pin is formed in the cover. An escape hole,is also formed in the cover for housing the tip end of the drive shaft extending from the end face of the body. A shoulder part is formed on the inner circumference of a shaft hole in the body which engages or disengages with a step between the large diameter part and the small diameter part of the drive shaft.

Growing community of inventors

Tokyo, Japan

Kenichi Kuga