Patent ID: 8469338
Filing Date: 2013-06-25
Classification: B66F

Abstract:
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.