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Anti-jackknifing apparatus

  • US 4,784,403 A
  • Filed: 10/23/1986
  • Issued: 11/15/1988
  • Est. Priority Date: 07/25/1985
  • Status: Expired due to Term
First Claim
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1. Anti-jackknifing apparatus for use in connection between articulated vehicles having a pulling unit and trailer wherein there is mounted on the pulling unit a plate having a v-slot and in the v-slot of the plate a coupling is made with a trailer coupling pin, wherein the apparatus comprises,a support frame adapted to be mounted on said trailer,an abutment member adapted to be positioned in an active engagement position between the sides of the v-slot of the pulling unit,and drive means for said abutment member to move said abutment member into its active engagement position and retract it from said active engagement position,said support frame including an abutment transverse support means including a mounting bar element mounted on the trailer above the v-slot of the pulling unit and behind the trailer coupling pin and positioning said abutment member which depends from the support frame in a depending vertically aligned position from above said v-slot and into the zone between the v-slot plate mounted on the pulling unit, said transverse support means and said drive means restraining movement of the abutment such that when pivotal movement of the pulling unit and trailer moves the abutment member and v-slot plate relative to each other to cause engagement of the abutment member with the v-slot side of the v-slot plate such engagement arrests further relative swinging movement of the pulling unit and trailer,bracing means connected to said abutment transverse support means for transferring forces applied to said abutment member by and during engagement with said v-slot plate to said mounting bar element to thereby transfer the forces from said support frame to the trailer at a point above the v-slot.

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