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Deadman brake assembly for cargo vehicles

  • US 5,350,036 A
  • Filed: 06/08/1992
  • Issued: 09/27/1994
  • Est. Priority Date: 06/12/1991
  • Status: Expired due to Fees
First Claim
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1. A deadman brake assembly for a cargo vehicle having a vehicle frame and a driver'"'"'s seat, comprising a brake device for selectively applying a braking force to said cargo vehicle, moving means provided for moving said brake device between a brake release position in response to a driver sitting on said driver'"'"'s seat and a normal brake application position when a driver is not on said seat;

  • a link mechanism interconnecting said moving means and said brake device for effecting movement of said brake device between said brake release and brake application positions in response to movement of said moving means;

    first urging means connected to said link mechanism normally urging said moving means toward said brake application position;

    second urging means connected to said link mechanism for urging said moving means toward said brake release position when a driver sits on said driver'"'"'s seat; and

    third urging means connected to said link mechanism urging said moving means toward said brake application position independently of said first urging means;

    said link mechanism comprising a bell crank having a long arm and a short arm swingably mounted on said vehicle frame by a first mounting means;

    said first, second and third urging means being mounted on the end of said long arm by a second mounting means;

    one end of said link mechanism being connected in the middle of said long arm;

    a brake lever of said brake device being connected to the end of said short arm;

    said first urging means comprising a coil spring connected to said vehicle frame on one end thereof and connected to the end of said long arm on the outer end thereof;

    said second and third urging means including a turnover spring mounted on said vehicle frame by a third mounting means on one end thereof and connected to the end of said long arm on the other end thereof; and

    said third mounting means of said turnover spring being within the swinging range of said bell crank which swings from a first position to a second position as said moving means moves from said brake application position to said brake release position.

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