US Patent 7600815 Raiser seat

A raiser seat for assisting a person from a sitting to a standing position is described. The seat comprises: a seat frame (4); a seat (10) supported for movement relative to the seat frame between a lowered position and a raised position; and a movement mechanism for moving the seat between the lowered and the raised positions. The movement mechanism comprises at least one cam (104) and the seat rests on the at least one cam such that rotation of the at least one cam results in movement of the seat relative to the seat frame.