CHAMBER PUMP AND METHOD FOR OPERATING A CHAMBER PUMP
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United States of America Patent
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app pub date -
Dec 13, 2017
filing date -
Dec 14, 2016
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Abstract
A chamber pump (10) and a method for operating same are provided. The chamber pump (10) includes a pump chamber (12), a chamber diaphragm (14) or a piston (34) as well as an axially movable driving rod (24) acting on the chamber diaphragm (14) or on the piston (34) for changing the volume of the pump chamber (12). The chamber pump (10) includes an electroactive diaphragm (40, 40′), which acts as an actuator for influencing an axial position of the driving rod (24) and acts on the driving rod (24), on the one hand, and on a housing of the pump (10), on the other hand. An electric potential is applied to the electroactive diaphragm (40, 40′) during the operation of the chamber pump (10) to influence an axial position of the driving rod (24) and to achieve a return stroke or a forward stroke of the chamber pump (10).
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