Document Type and Number:
Japanese Patent JPS4946205
Kind Code:
A
Abstract:
A diaphragm pump having a housing, an operating rod projecting within the housing and mounted therein for reciprocating translational movement, a rotatable camshaft mounted in the housing for reciprocating the operating rod, an electric motor for driving the camshaft and strain wave speed reducing gearing interposed between the motor and camshaft for rotating the camshaft at slow speed from the relatively high speed motor. Such gearing includes an external ring gear having internal teeth fixed to the housing, a deformable internal strain gear having external teeth in cooperative engagement with the ring gear, the strain gear being drivingly connected to the camshaft, and a strain inducer mounted internally of the strain gear in cooperative engagement therewith, the strain inducer being drivingly connected to the motor. The pump also includes a yoke fixed to the operating rod within the housing, cam and follower means interposed between the camshaft and yoke for driving the yoke in one direction, spring means interposed between the yoke and the housing for moving the yoke in an opposite direction and adjustable stop means for limiting movement of the yoke in the opposite direction to establish an adjustably predetermined stroke of the pump.
Application Number:
JP10633672A
Publication Date:
May 02, 1974
Filing Date:
October 25, 1972
Export Citation:
International Classes:
F04B9/02; F04B43/02; (IPC1-7): F15B15/24