Abstract: An improved mechanism is disclosed for varying the radius of gyration of a plurality of gyrating masses and for selectively changing the direction of the resultant unbalanced force produced by these gyrating masses. The improved mechanism is comprised of a pair of normally non-rotating, eccentrically disposed, circular cams which engage a pair of cam followers which are attached to connecting rods which in turn are connected to the gyrating masses. The direction of the resultant unbalanced force is selectively changed by simply rotating, in unison, the pair of normally non-rotating cams.

Abstract: This invention relates to new and useful improvements in devices that convert rotary motion into unidirectional motion by varying the radius of gyration of a plurality of gyrating masses which gyrate in a plane that is perpendicular to the axis of rotation. An improved mechanism, comprised of a normally stationary crank-like shaft, is disclosed for changing the direction of the resultant force and for continuously varying the radius of gyration of the gyrating masses. Also an improved means of support for the gyrating masses is disclosed which permits the use of linear motion bearings in order to substantially reduce the friction and wear of the slidable gyrating masses and their associated supporting structure.

Abstract: This invention relates to new and useful improvements in devices that convert the centrifugal forces produced by rotating masses into a propulsive force acting in one direction and which is comprised of a movable supporting structure in which identical sets of masses rotate in opposite directions about an axis which is perpendicular to the desired direction of travel and a mechanism for continuously varying the radius of gyration of each mass during its cycle of revolution.