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Road grader

  • US 4,568,219 A
  • Filed: 06/04/1984
  • Issued: 02/04/1986
  • Est. Priority Date: 06/04/1984
  • Status: Expired due to Fees
First Claim
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1. A drag-type road grader, which comprises:

  • (a) a frame including;

    (1) a pair of trusses aligned in parallel relation along a direction of travel of the grader;

    (2) a plurality of hinge mechanisms mounted in longitudinally spaced relationship on each said truss, each said hinge mechanism being positioned in transversely opposed relationship with an associated hinge mechanism on the other of said trusses;

    (3) a plurality of tie rod means each extending transversely between said trusses and interconnecting an associated pair of said hinge mechanisms;

    (b) a plurality of road-working blades extending transversely between said trusses;

    (c) a plurality of blade mounting means each mounting a respective blade on an associated pair of said hinge mechanisms;

    (d) a tongue assembly including a tongue extending forwardly from said frame along the direction of vehicle travel and tongue connector means adapted for connecting said tongue to said trusses;

    (e) a pair of transport wheel assemblies each being movable between a retracted position with the grader in an operating mode and in extended position with the grader in a transport mode, each said wheel assembly being mounted on a respective truss;

    (f) power means for skewing said frame whereby said side frame members are shifted longitudinally with respect to each other and said blades are angled with respect to the direction of grader travel;

    (g) means adapted for raising and lowering said wheel assemblies; and

    (h) each said hinge mechanism pivotally mounting in spaced relation a respective tie rod means and blade for pivotal movement with respect to a respective truss about a vertical pivotal axis extending through said hinge mechanism.

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