×

Water supply control system

  • US 5,063,622 A
  • Filed: 10/04/1990
  • Issued: 11/12/1991
  • Est. Priority Date: 02/07/1989
  • Status: Expired due to Term
First Claim
Patent Images

1. A water supply control system having light-emitting means for periodically emitting light, light-detecting means for detecting light emitted from the light-emitting means and reflected from a portion of the body of a user, and control means for controlling a faucet to supply water based on a detected signal from the light-detecting means, wherein said control means comprises auxiliary light-emitting means for enabling said light-emitting means to effect a plurality of light emissions at a period shorter than the period at which the light is periodically emitted thereby, when a user is detected on the basis of the detected signal from said light-detecting means, and decision means for counting the number of times in which the light is detected by said light-detecting means, among the light emissions caused by said auxiliary light-emitting means, and for controlling said faucet based on the counted number.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×