Abstract: The invention as disclosed is a control mechanism adapted for actuation by a human, in the exemplary embodiment by a person's foot. The invention provides for control or actuation of a plurality of devices to be controlled. A plurality of control elements, preferably arranged arcuately with respect to an actuating member is provided with a structure for accurately indexing the actuating member to a particular control element by way of one mode of movement and for actuating an individual indexed control element of a second mode of movement. Particular structure is provided, by way of a foot pedal, in the exemplary embodiment, with particular adjustments so as to adapt the actuating member, that is, the foot pedal, to various sizes and positions of an operator's foot, as well as amplitude of actuating movement.

Abstract: An axial gear train of the type having a nutating gear mounted on a skew axle that has a gear face meshing with a fixed gear face. A nutating gear has a gear face meshing with a gear face on an output gear. The improvement resides in means positioned to hold the gear faces on the nutating gear or gears and the gear faces they mesh with together at the point of contact which rotates. The improvement in one form comprises yokes positioned at and rotating with the rotating points of contact. In another form, cluster gear assemblies are provided so arranged that opposing forces are created resisting the tendency of gear faces to push apart. Further improvements reside in particular design construction to facilitate mounting or journalling of the nutating gear or gears on the skew axle by way of a split hub construction which provides the journal for said gear or gears.

Abstract: A completely sealed magnetically driven pump having a piston armature driven by electrical windings. Unique electrical driving circuits are provided for the pump embodying feedback windings magnetically coupled with the driving windings of the pump for controlling the reciprocation. The drive circuits are such as to facilitate driving rates, embodying particularly solid state bistable flip-flop components adaptable to be embodied in or associated with computers or other low power logic devices.