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Undercarriage for X-ray diagnostic equipment

  • US 5,503,416 A
  • Filed: 03/10/1994
  • Issued: 04/02/1996
  • Est. Priority Date: 03/10/1994
  • Status: Expired due to Term
First Claim
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1. An undercarriage assembly for wheeling heavy equipment, said undercarriage being attached to a base member supporting said equipment, comprising:

  • a front wheel rotatably mounted on a bottom portion of the base member and being rotatable about a horizontal axis;

    swivel means for rotation of a wheel about a vertical axis, the swivel means being connected to the base member rearward of said front wheel and extending generally downward, said swivel means having an engaged position, wherein the swivel means can rotate about the vertical axis, and a disengaged position wherein the swivel means cannot swivel about the vertical axis;

    a rear wheel rotatably attached to said swivel means on the bottom of the base member and behind the front wheel, the rear wheel being rotatable about a horizontal axis in tandem with the front wheel to thereby enable wheeling the equipment across a surface such that respective bottom extremities of said wheels are common to a plane tangential thereto;

    means for braking disposed adjacent said rear wheel, said braking means having an engaged position, in which the rear wheel cannot rotate and a disengaged position in which the rear wheel can rotate;

    an elongate leg member pivotally attached at a proximal end to the base member, rearward of said rear wheel;

    a wheel member rotatably attached on a distal end of the leg member and being rotatable about a horizontal axis; and

    positioning means attached to the base member and to the leg member for positioning said leg member to extend downwardly from the base member at an angle thereto such that the wheel member is disposed above the tangential plane common to the front and rear wheels in a suspended position and rotates in tandem with the rear wheel when said wheel member contacts the surface across which the equipment is wheeled, said positioning means comprising a linear decelerator which absorbs impact energy from the wheel member when said wheel member contacts said surface such that the wheel member is moved toward the base at a constant rate to thereby prevent the equipment from rocking.

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