Antriebsvorrichtung fuer eine Pumpe zur Erzeugung eines ein Handgeraet zur Koerperpflege speisenden pulsierenden Fluessigkeitsstrahls

摘要

Device for operating a pump so as to produce therefrom a pulsating jet of liquid for feeding to a hand-piece for medical care, in particular for tooth and mouth care, in which the frequency of the liquid impulses, are capable of being modulated while maintaining a nearly constant amplitude of the liquid pressure.