Abstract: A windmill vane for use with a windmill having a vertical shaft. The vane comprises an open, rigid, planar, preferably semi-elliptical frame and a flexible sail on the frame. The frame can also be chevron shaped or semi-rectangular in shape. One end of the frame is affixed to the shaft, ad the other end is aligned therewith horizontally and radially outwardly from the shaft. The planar frame is oriented with a central portion leading the ends thereof relative to the instantaneous direction of movement of the frame around the shaft. The central portion of the frame is inclined at a 45.degree. angle upwardly from the frame ends relative to such instantaneous direction of movement. The sail is light weight, resilient, and preferably carried by a loose sleeve around the frame. The design of the vane ensures that the sail is full when moving with the wind and streams directly behind the frame when moving across and against the wind.

Abstract: A novel graphic system and associated computer keyboard for easily and effectively programming a computer is disclosed. Specifically, a linear and structured flow chart using easy to understand graphic symbols allows transfer of the program represented by the flow chart directly into a computer via a keyboard which has associated graphic symbols designated on each of the individual keys.

Abstract: Vehicle propulsion system or the like characterized by energy interchange between a plurality of flywheel assemblies each including a driving/driven induction motor/generator, and a plurality of vehicle drive wheel assemblies including drive wheels each directly driving/driven by an induction motor/generator, with energy makeup provided by a heat engine driven generator means, operated on demand, such energy interchange being by means of a multi-directional bus to which the flywheel and drive wheel motor/generators are selectively connected by variable frequency switch means and to which the engine driven generator is connected when operating, the switching being under control of a digital computer type controller, the controller receiving as inputs various vehicle operating conditions including flywheel, drive wheel, brake, steering angle and speed control positions, and bus voltage and heat engine driven generator operating condition, and the controller generating switch means controlling outputs causing en