Patent ID: 8777238
Filing Date: 2014-07-15
Classification: A61G

Abstract:
1. A portable chair lift adapted to pass through standard sized residential doorways and to help raise a collapsed or fallen person off the ground within a building, comprising: a rollable, base frame that resides directly on the ground when not in a tipped, rollable configuration, wherein said base frame has a mast that extends from the horizontal plane of the base frame, said mast comprising two parallel C channels affixed to said base frame, said C channels acting as a guide track to rollably contain lift chair mast wheels, and said base frame has two horizontal base support legs arranged in a parallel configuration, said legs having an opposing, inside face and an outside face, said outside faces having a maximum distance between them of 29½ inches; a lift carriage capable of being raised or lowered, nestled within said base frame, said lift carriage also residing directly on the ground when fully lowered and the base frame not in a tipped rollable configuration, wherein said lift carriage has an L shaped frame affixed to a seat and with at least two mast wheels extending therefrom, said mast wheels engageable with said base frame for rolling movement of said lift carriage with respect to said base frame, said movement having a vertical component, wherein said lift carriage's L shaped frame has an outside horizontal dimension that is less than a distance between said inside faces of said horizontal base support legs such that said lift carriage can reside in a nestled configuration within said base frame; a lift system operably connected between said base frame and said lift carriage so as to raise or lower said lift carriage within said base frame, wherein said lift system has two substantially similar belts each having a first end affixed to said base frame and a second end affixed to said lift carriage; a linear actuator having an extendable ram and affixed to the base frame; a power source operatively connected to said linear actuator; a T bar having two ends, and affixed to said extendable ram, said T bar having a first belt pulley rotationally affixed at either of said ends; a lift frame affixed to the base frame with two second belt pulleys rotationally attached thereto, and two distal belt clamping devices thereon; two proximate belt clamping devices attached to said lift carriage; and two substantially similar belts having a distal end and a proximate end; wherein said distal ends of said belts are attached to the distal belt clamping devices on the lift frame, and said belts are looped around said first belt pulleys and said second belt pulleys with their proximate ends affixed to the proximate belt clamping devices on the lift carriage.