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PORTABLE DOCK LEVELLERS

  • US 3,639,935 A
  • Filed: 06/15/1970
  • Issued: 02/08/1972
  • Est. Priority Date: 06/15/1970
  • Status: Expired due to Term
First Claim
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1. A portable dock leveller, comprising :

  • a ramp platform having a wing hinged to and projecting from one side of said platform;

    said wing adapted to normally extend over an opening between a dock on which the platform is supported and the floor of an adjacent carrier, for passage therebetween;

    resilient means for hinge lifting the wing on the platform;

    releasable frictional means for preventing the wing from such lifting;

    wheels mounted below the platform;

    means for lifting the platform and wing on said wheels to a locked position for guided transport thereon; and

    means for releasing the platform from said locked position.

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