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Television monitor and control

  • US 4,246,495 A
  • Filed: 10/05/1978
  • Issued: 01/20/1981
  • Est. Priority Date: 10/05/1978
  • Status: Expired due to Term
First Claim
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1. Apparatus for controlling the operating time of a utilization means having a switch for controlling the supply of power thereto, said apparatus comprising;

  • a first timer coupled with the control switch of the utilization means to accumulate the operating time of the utilization means over a predetermined interval,means for setting a desired accumulation time in the first timer,reset means for resetting the first timer to zero accumulated time at the end of the predetermined interval,a second timer associated with the first timer for enabling operation of the utilization means only during a selection period of said predetermined interval,and means for setting the desired selection period, which represents a portion of the predetermined interval, of the second timer,said second timer including means for enabling operation of the first timer only during the said selection period,whereby the utilization means is permitted operation during the selection period but only up to a time limit defined by the set accumulation time.

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