A powered seat for assisting a person in moving between seated and standing positions comprising a seat squab with front 114B and rear 114A moveable portions and a mechanism for enabling movement of the portions between a seated configuration in which the portions are substantially aligned to provide a seat and a standing configuration in which the rear portion 114A is higher than the front portion and both portions are tilted forwards at different angles. One of the squab portions may have a tether to deform a front portion in the standing configuration and the portions may independently tilt. A back rest 112 and grips 122 may be arranged to move with the rear portion. Also disclosed are a flexible sheet for covering a lift mechanism and means to keep it taught, an axle arrangement wherein the weight of the chair holds an axle in a restraining receiving area and a retractable footrest arranged to maintain first and second links in parallel positions.
