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Truck safety recorder

  • US 4,338,512 A
  • Filed: 12/08/1980
  • Issued: 07/06/1982
  • Est. Priority Date: 12/08/1980
  • Status: Expired due to Term
First Claim
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1. A recording apparatus for use by a driver of a vehicle, the vehicle powered by an engine, said recording apparatus comprising in combination:

  • a. clocking means for generating a periodic time signal;

    b. a sensor for sensing that the vehicle is in motion and generating a motion signal in response thereto;

    c. first storage means for storing the amount of time that the driver has spent driving the vehicle;

    d. display means coupled to said first storage means for displaying the time stored by said first storage means;

    e. control means responsive to the periodic time signal and responsive to the motion signal for incrementing the time stored by said first storage means upon an occurrence of said periodic time signal provided that the vehicle is in motion;

    f. second storage means coupled to said control means for storing the amount of time that the driver has spent on duty;

    g. third storage means coupled to said control means for storing the amount of time that the driver has spent off duty;

    h. switch means coupled to said control means and operated by the driver for indicating whether the driver is on duty or off duty;

    i. said control means incrementing said second storage means upon an occurrence of said periodic time signal provided that the driver is on duty and incrementing said third storage means upon an occurrence of said periodic time signal provided that the driver is off duty;

    j. a keyed switch coupled to said control means and operated by an insertable key;

    k. engine enable/disable means coupled to the engine of the vehicle and having an input for disabling the engine upon receiving a shut-down signal at the input; and

    l. said control means being coupled to the input of said engine enable/disable means for supplying the shutdown signal provided that said key is inserted within said keyed switch when said switch means indicates that the driver is off duty.

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