×

Electronic washer control including automatic load size determination, fabric blend determination and adjustable washer means

  • US 5,161,393 A
  • Filed: 06/28/1991
  • Issued: 11/10/1992
  • Est. Priority Date: 06/28/1991
  • Status: Expired due to Term
First Claim
Patent Images

1. A fabric washing machine comprising:

  • a rotatable container to receive fabrics to be washed;

    an electrically energized motor, means operatively connecting said motor to said container to rotate said container with said motor; and

    control means connected to said motor and effective to cause said motor to rotate said container having a load of fabrics therein with a first predetermined constant torque and to measure the time required for said motor to accelerate said container from a first predetermined velocity to a second higher predetermined velocity;

    to cause said motor to rotate said container with a second predetermined torque and to measure the time required for said motor to accelerate said container from the first predetermined velocity to the second predetermined velocity; and

    to generate a signal based upon the measured times so that the signal is representative of the mass of the load of fabrics and independent of friction of said washing machine.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×