Abstract: Three piece separable hinge assembly wherein, when closed or nested, a smaller flat leaf is received loosely, coplanar, within a central cut-out area of a larger flat leaf so that the composite hinge occupies the thickness of only one leaf. When this thickness corresponds to the shallow recess or seating niche of an attached structure (e.g. either door or door jamb) to which the leaf is secured, such door can be completely closed without leaving an appreciable gap between it and the adjacent wall. Each leaf, along a common edge, is formed with a jointly aligned bearing tube, which tubes house a cylindrical hinge pin having a tapered, distally converging, engagement neck and flared head. Such pin is removably insertable from either end of the tube. Longitudinally spaced along the bearing tube of the smaller leaf are a pair of tangentially projecting abutment lugs which serve to locate one connected structure (e.g. door) for automatic alignment with the other (e.g.

Abstract: A pair of elevating structures to be worn on the feet, each of the structures comprising a ground contact unit to which a vertically separated foot receiving unit is joined to form a unitary structure. The ground contact unit has a horizontal base plate from which rear, side, and front walls extend upwardly to form a hollow structure, a portion of these walls extending further upward in the form of a hollow tower on the rear portion of the unit to which tower the foot receiving unit is joined. The tower extends under the rear half of the foot receiving unit so that the weight of the wearer is centered over the tower and transferred from the tower to the ground contact unit. The forward part of the foot receiving unit is cantilevered from the tower and forms an open area between the forward portion of the foot receiving unit and the lower part of the ground contact unit. The foot receiving unit has semi-flexible walls and means to close the walls about the feet of the wearer.