Abstract: A wheelchair for the handicapped is provided having an arm-rest hinge block including a back half-block fastened to an upright back of a structure and carrying a pivot pin. An arm-rest half-block mounted to pivot on the pivot pin includes a bore that rotatably receives a cylindrical shank of an angled arm-rest so that the shank is locked in position when the angled arm-rest occupies a substantially horizontal plane or a substantially vertical plane.

Abstract: A wheelchair including a chassis (2) and an articulated height adjustment structure (12) with a seat, foot rest and back is disclosed. The articulated structure is made up of two symmetrical and lateral articulated systems, each having a first folding quadrilateral (17) with upper and lower bars (18, 19), pivoted at the front to the chassis and at the back by a spacer (20), and a second folding quadrilateral which helps to support the foot rest and connects the chassis at the front to the first quadrilateral. Each spacer is in the form of a triangular plate connected to the upper and lower bars (18, 19) by fixing nuts which can be set in adjustable positions on the bars. The spacers on opposite sides of the wheelchair are connected by a crosspiece.

Abstract: A chair for the handicapped or invalids. In the chair the second assembly is disposed at least in part behind the front plane and is linked to the first assembly by at least one reversible actuation and coupling rod, itself set back from the front plane and beneath the plane defined by the seat in its low position. The invention is particularly applicable to verticalizing chairs.