Oblon, Fisher, Spivak, McClelland & Maier
Diaphragm fluid pump
 In a diaphragm fluid pump which includes a diaphragm piston assembly assembled within a pump housing to form a pump chamber at one side thereof, the diaphragm piston assembly includes a diaphragm member secured in a fluid-tight manner at its outer periphery to the peripheral wall of the pump housing, and an operation rod connected at one end to the diaphragm member and at another end to a swingable end of a rocker arm to reciprocate the diaphragm piston assembly in an axial direction so as to produce a positive or negative pressure in the pump chamber. A pair of axially spaced upper and lower guide assemblies are mounted within the pump housing to slidably support the operation rod in its axial direction, and a support member is mounted on a lower end portion of the operation rod and slidably supported by the lower guide assembly, the support member being provided at its upper end with a receiver portion for receiving thereon the swingable end of the rocker arm. 
Aisan Kogyo Kabushiki Kaisha Toyota Jidosha Kabushiki Kaisha
F F F
F04B F04B F02F
inventional inventional additional
Shoichi Shingo Yoshihisa
Yamamoto Watanabe Nomura