Hydraulic wheel lift system for tow vehicles

  • US 4,564,207 A
  • Filed: 10/17/1983
  • Issued: 01/14/1986
  • Est. Priority Date: 10/17/1983
  • Status: Expired due to Term
First Claim
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1. A device adapted to be attached to a towing vehicle and adapted to raise the wheels of a vehicle to be towed, said device comprising:

  • (a) at least one main boom adapted to be mounted on said towing vehicle;

    (b) a wheel boom connected to said main boom in a position substantially transverse to said main boom;

    (c) a pair of lift-arms, each of said arms being substantially L-shaped and each being pivotally attached to said wheel boom;

    (d) means for pivoting said lift-arms between a rest position in which said lift-arms are adjacent to said wheel boom and an operative position in which each lift arm forms a substantially U-shaped frame with a portion of said wheel boom, said U-shaped frame comprising means for engaging and supporting the underside of a respective vehicle tire, said lift-arm pivoting means comprising a pair of hydraulically operated cylinders, each of said hydraulic cylinders including a cylinder portion and an arm portion which is adapted to reciprocate along a linear path parallel to the longitudinal axis of said wheel boom linear motion of respective hydraulic cylinders causing each of said generally L-shaped arms to pivot and to form, together with a portion of said wheel boom, a generally U-shaped, outwardly directed wheel bowl, each wheel bowl comprising means for receiving a vehicle wheel.

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