SEAT STRUCTURE WITH SIT-TO-STAND FEATURE

摘要

A stand chair is operated by a pair of screw shaft-type linear actuators which extend upwardly and forwardly from a pair of spaced-apart frame members. One embodiment has a solid seat and another has a split sweat with a drop-away front portion. One or more motors are provided to operate the screw shafts in such a way as to raise the rear seat portion without changing its angular orientation in space. Connector links interconnect the frame with the front seat portion so as to cause it to drop downwardly out from under the thighs of an occupant, while the back seat portion raises upward, thereby assisting the occupant to stand up and exit the chair. Various additional features such as armrests, wheels and a reclining backrest may also be provided.

主权项

1. A chair structure for assisting a person in need of assistance to move from a sitting position to a vertical standing position, said chair comprising:
an elongate base formed of a two spaced apart elongated tubular members for supporting said structure on a surface; each member having a section extending forward and upward at an acute angle from said base; a seat structure having two tubular members extending telescopically relative to said forward and upward members, said structure having a seat portion for carrying said patient, said seat portion being mounted between said two tubular members to move said patient upward and forward; and at least one actuator interconnected between said base and said seat structure for moving said seat and said patient in an upward and forward direction.