Patent ID: 6092247
Filing Date: 2000-07-25
Classification: A61G

Abstract:
A patient lift and transfer device, comprising:a wheeled chassis including an upright frame and a pair of horizontally elongated side legs connected to a lower part of said upright frame and projecting rearwardly therefrom in cantilevered and sidewardly spaced relation;said side legs being movably connected to said upright frame for horizontal transverse movement between sidewardly contracted and expanded positions;a leg actuating mechanism cooperating between said upright frame and said legs for causing movement of said pair of legs in opposite direction as they are moved between said contracted and expanded positions;said wheeled chassis being rollingly supported on sidewardly spaced pairs of front and rear wheels which are rotatable solely about axes which extend transversely with respect to the elongated direction of said side legs, the pair of rear wheels being disposed adjacent rear free ends of said side legs, and driving mechanisms interconnected to the rear wheels for effecting powered driving of the chassis;a lifting arm arrangement vertically swingably mounted on said upright frame and projecting rearwardly therefrom, said lifting arm arrangement including elongate upper and lower swing arms which at one end are mounted on said upright frame for swinging movement about vertically spaced but substantially parallel upper and lower horizontally-extending swing axes respectively;a patient support frame connected to the other ends of said upper and lower arms at vertically spaced and substantially parallel upper and lower horizontally-extending pivot axes respectively, said support frame including a rigid support which extends between and is pivotally connected to said other ends at said upper and lower pivot axes so as to maintain a predefined spacing between said pivot axes during vertical swinging displacement of said lifting arm arrangement; andan actuating device connected to said lifting arm arrangement for controlling vertical swinging thereof about said upper and lower swing axes.