Drive mechanism for a soap or foam dispenser
OwnerHans-Jörg Studer, Markus Ehrenspergerinventors
Life of this patent
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Abstract
A device for the linear drive of a pumping member in a soap-type dispenser includes a crank mechanism with a crank disc and a push rod transmitting a linear movement to a piston rod. Disengageable coupling members are located between the push rod and the piston rod to disengage the piston rod when an actuating signal is not present. The coupling members can be re-engaged upon further movement of the crank disc. The device may be employed in conjunction with a motor driven pumping member and a sensor with a control circuit to detect the presence of a hand to be supplied with the soap and generate the actuating signal.
Claims10
A device for the linear drive of a pumping member in a dispenser for free-flowing media of the type having an electric motor, a sensor with a control circuit to detect the presence of a hand to be supplied with the media to trigger a pumping process and interrupt the pumping process when the hand is no longer present in a region receiving the media in such a way that the media remains in the dispenser without dripping, comprising a crank mechanism connected to the electric motor, the crank mechanism including a crank disc and a push rod transmitting a linear movement to a piston rod;
- disengagable coupling members being located between the push rod and the piston rod to disengage the piston rod when the hand is no longer present, and spring-loaded means to re-engage the coupling members upon a further movement of the crank disc of the crank mechanism.
Dependencies are inferred from the claim text.