Lifting apparatus

  • US 8,469,338 B2
  • Filed: 04/20/2010
  • Issued: 06/25/2013
  • Est. Priority Date: 04/20/2010
  • Status: Active Grant
First Claim
Patent Images

1. A lifting apparatus, comprising:

  • a base having a proximal end, a distal end, a first pair of generally parallel laterally offset channels with open top ends, and a second pair of generally parallel laterally offset channels with open top ends;

    a first pair of rotatable arms extending inside the first pair of channels;

    a second pair of rotatable arms extending inside the second pair of channels;

    one arm of the first pair of arms and one arm of the second pair of arms rotating about a generally common first axis;

    the other arm of the first pair of arms and the other arm of the second pair of arms rotating about a generally common second axis;

    the first and second pairs of arms being rotatable in concert between lowered and raised positions;

    the arms of the first pair of arms being generally laterally adjacent one another when at the lowered position;

    the arms of the second pair of arms being generally laterally adjacent one another when at the lowered position;

    a receiving portion;

    the one arm of the first pair of arms and the one arm of the second pair of arms being rotatably coupled to the receiving portion about a generally common third axis;

    the other arm of the first pair of arms and the other arm of the second pair of arms being rotatably coupled to the receiving portion about a generally common fourth axis;

    the first and second axes being separated by a distance generally equal to a distance between the third and fourth axes.

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