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Automatic liquid soap supply device

  • US 5,299,713 A
  • Filed: 09/17/1992
  • Issued: 04/05/1994
  • Est. Priority Date: 09/24/1991
  • Status: Expired due to Fees
First Claim
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1. An automatic liquid soap supply device comprising:

  • a plurality of liquid soap supply taps to eject liquid soap,a plurality of sub-units associated with the respective liquid soap supply taps, each sub-unit having a sensor for sensing presence of a hand located under the liquid soap supply tap, a use detection circuit connected to the sensor and a pump driving circuit connected to and activated by said use detection circuit,a reservoir for storing the liquid soap to supply the liquid soap to the respective liquid soap supply taps,pumps disposed to the respective sub-units, each pump being connected to each pump driving circuit for supplying the liquid soap in the reservoir to each supply tap, anda main unit having a single power source circuit connected with each of said use detection circuitsso that each pump is driven to supply the liquid soap to the liquid soap supply tap when the sensor detects the hand.

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