Patent ID: 9248065
Filing Date: 2016-02-02
CPC Classification: A61G,B62B

Claim Text:
1. A patient transport apparatus for transport between a patient bed and a bathtub, comprising: a base having a first caster wheel, a second caster wheel, a third caster wheel, and a fourth caster wheel arranged at four corners of a bottom side of said base respectively; a extendable and retractable handle mechanically connected to a backside of said base for maneuvering said patient transport apparatus; a double scissors truss, mechanically connected on a top side of said base, operable to extend and retract vertically from said base; a crank handle, mechanically connected to said double scissor truss, wherein when said crank handle is rotated in one direction, said double scissor truss extends vertically and when said crank handle is rotated in the opposite direction, said scissor truss retracts to an initial unused position; a support frame member, mechanically connected to the top portion of said double scissor truss, configured to extend and retract horizontally so as to reach to said patient bed or to said bathtub; a hoisting assembly, positioned on top of said support frame member, configured to move back and forth along longitudinal sides of said support frame member; and a telescoping support pole, rotably connected to a front traverse end of said support frame member, operable to rotate in a direction perpendicular to said front traverse end of said support frame member, wherein: said hoisting assembly further comprises a rectangular frame member and a system of pulleys, said rectangular frame operative to move said system of pulleys back and forth along the longitudinal sides of said support frame member, wherein: said rectangular frame member further comprising a first axial member and a second axial member; a first longitudinal rectangular plate and a second longitudinal rectangular plate fixedly connected on top and at both ends of said first axial member and said second axial member so as to form said rectangular frame member, a first wheel, a second wheel, a third wheel, and a fourth wheel, arranged at four corners of said rectangular frame member, wherein said first wheel is connected to said second wheel via said first axial member and rotate freely around said first axial member, wherein said third wheel is connected to said fourth wheel via said second axial member and rotate freely around said second axial member, and said system of pulleys further comprising a first pulley member, a second pulley member, a third pulley member, and a fourth pulley member, arranged at the four corners of said rectangular frame, proximate and perpendicular to said first wheel, said second wheel, said third wheel, and said fourth wheel respectively, wherein each of said first pulley member, said second pulley member, said third pulley member, and fourth pulley member are connected to a first winch handle, a second winch handle, a third winch handle, and a fourth winch handle respectively.