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Soap dispenser

  • US 5,988,440 A
  • Filed: 04/20/1998
  • Issued: 11/23/1999
  • Est. Priority Date: 10/17/1995
  • Status: Expired due to Fees
First Claim
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1. A liquid soap dispenser comprises:

  • a soap dispensing nozzle (6);

    a liquid soap reservoir;

    a plunger (21) and a cylinder (10) connected between the nozzle (6) and the reservoir so that soap is supplied from the reservoir to the cylinder (10) and from the cylinder (10) to the nozzle (6) upon relative movement in a dispensing direction of the plunger (21) within the cylinder (10);

    a sensor (8) for detecting the presence of the hands of a user in the vicinity of the nozzle (6);

    a magnetic core (12) coupled to the plunger (21) or the cylinder (10) the core (12) being mechanically connected to a plate (13); and

    ,a solenoid (14) which, in use, attracts the plate (13) to move the core (12) to cause relative movement of the cylinder (10) and plunger (21) when a current is supplied to the solenoid (14) in response to a signal from the sensor (8) indicating the presence of the hands of a user in the vicinity of the nozzle (6).

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