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Safety seatbelt system

  • US 4,252,342 A
  • Filed: 03/08/1979
  • Issued: 02/24/1981
  • Est. Priority Date: 03/09/1978
  • Status: Expired due to Term
First Claim
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1. A safety seatbelt system comprising a seatbelt, a pivotal hook to hold said seatbelt, said hook being disposed in the front edge of a door, a solenoid for causing said hook to pivot and to unhook said seatbelt from said hook, a solenoid operating circuit including a timing means for magnetizing said solenoid for a period of time to have said hook release said seatbelt when a passenger takes a seat and closes the door, further comprising:

  • a hand brake;

    a hand brake switch actuated by operation of said hand brake; and

    a second solenoid operating circuit responsive to said hand brake switch for supplying magnetizing current to said solenoid to prevent said seatbelt from being removed from said passenger and hooked onto to said hook while said hand brake is released.

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