Abstract: A recliner in one embodiment has a support assembly capable of oscillatory motion, and the support assembly includes a chair support, a seat portion, coupled to the chair support, a back rest portion, and a foot rest portion. The oscillatory mechanism includes an arrangement providing to the subject a sensation similar to that of being swung from an overhead pivot.

Abstract: An apparatus is provided for imparting substantially oscillatory horizontal motion to a subject. The apparatus has a translating support assembly, an oscillatory mechanism, and an actuator permitting the subject to apply a non-gravitational acceleration to the translating support assembly. The oscillatory mechanism has a linkage assembly with mounts offset in a plane transverse to the direction of motion so as to permit a large stroke of travel of the translating support assembly relative to a fixed support structure. Additionally, a locking mechanism is provided that is biased to preclude motion of the oscillatory mechanism in the absence of a substantial weight on the support assembly.

Abstract: An apparatus for imparting substantially oscillatory motion to a subject. The apparatus has a support assembly for supporting the subject and an oscillatory mechanism for defining a path of motion of the support assembly, the path having a region of bilateral symmetry with respect to a reference point. An actuator assembly which may be coupled to the oscillatory mechanism enables the subject to control the oscillatory mechanism, as well as to brake and lock the motion of the mechanism. The apparatus may allow for the subject to recline on an articulated support assembly, in which case the equilibrium center of gravity of the support assembly is maintained substantially at the centerpoint of the path of motion regardless of the relative orientation of the articulated segments of the support assembly.