VIBRATION PUMP Russian patent published in 1994 - IPC

FIELD: pump engineering. SUBSTANCE: flexible shock-absorber provided with a rigid bearing is mounted on a rod using a nut. A diaphragm is positioned on the rod between piston and nut. Flowing passage is provided in a case and passes through the rigid bearing. Bottom part of the flowing passage positioned above the shock-absorber is shifted with respect to its top part to periphery of the pump at a distance that provides symmetry of the form over periphery of the rigid bearing in given sizes. The diaphragm is set on the rod so that face of the diaphragm abuts against face of the nut with a guarantee tension. EFFECT: improved design. 2 cl, 2 dwg