Patent ID: 9162857
Filing Date: 2015-10-20
Classification: B66F

Abstract:
1. An apparatus comprising: a base, the base supported by a plurality of supporting wheels; a top member, the top member defining a proximal end and a distal end, the proximal end pivotally coupled to the base; a bladder, the bladder disposed between the base and the top member; a mounting block, the mounting block pivotally coupled to the distal end of the top member; a stabilizing member, the stabilizing member pivotally coupled to the base on a proximal side of the bladder and pivotally coupled to the mounting block on a distal side of the bladder such that a portion of the stabilizing member spans over the bladder with the supporting wheels resting on a horizontal surface; and a chain, the chain spanning between the base and the top member, enclosed at least partially within the bladder, and operative to limit an extent to which the apparatus can raise the distal end of the top member away from the base; wherein the apparatus is operative to raise the distal end of the top member away from the base as the bladder is inflated.