Cushman, Darby & Cushman
Radial piston pump
 A radial piston pump for the automotive brake system has a rotor, a couple of pistons reciprocated within a respective cylinder formed within the rotor and a bearing. The top end of the piston abuts directly to the inner surface so that no show is existed therebetween. The relationship within a starting point and a finishing point of a suction groove, a starting point and a finishing point of a disharge groove and an opening port the cylinder is designed in such a manner that at least one of a couple of cylinders connects to the suction groove during a whole rotation of the rotor. 
Nippondenso Co., Ltd.
F
F04B
inventional
Akihiko Hideyuki Kougi Yoshiaki
Sawada Koike Nagai Ito