×

Device for monitoring the rate of use of an electrical appliance

  • US 4,956,825 A
  • Filed: 02/05/1990
  • Issued: 09/11/1990
  • Est. Priority Date: 02/05/1990
  • Status: Expired due to Fees
First Claim
Patent Images

1. A use monitor for an electrical appliance for providing a continuous report of appliance use time during a specific moving time interval immediately prior to the report, said monitor comprising:

  • (a) a sensor for detecting when said appliance is in use;

    (b) a register operatively connected to said sensor which records a continuous pulse train indicative of sequential periods of use or non-use of said appliance over said time interval;

    (c) counter means for counting the periods of use represented by said pulse train; and

    ,(d) utilization means connected to said counter means for utilizing the results therefrom.

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