Abstract: The rotary engine piston and seal assembly is disclosed that improves engine efficiency and power and reduces wear on an inner housing surface. It has a somewhat cube-shaped piston and a pair of grooves running around all four sliding side surfaces. The grooves contain a series of segmented metal seals and are compressed against the mating surfaces by a group of seal springs.

Abstract: A novel centrifugal device that attaches to multiple rotating cross-vanes in a rotary engine so as to offset the effects of centrifugal forces on the cross-vanes and thereby reduce seal element wear on the cross-vanes. The device consists of two clevis arms and a weight arm pivotally pinned to each end of the rotating cross-vanes.

Abstract: The present rotary engine has a frame with facing, endless spherical surfaces between which combustion chambers move through contraction and expansion cycles. Rotors forming opposite sides of the combustion chambers rotate on an angled, nonrotatable shaft through which a straight power shaft passes. Ring gears on the hubs of the rotors drive gears fastened to the power shaft. The engine is air cooled with air deflected into an interior chamber for subsequent use as combustion air. Air is also deflected into hollow wall segments forming opposite sides of the combustion chambers and into hollow cross vanes forming the other opposite sides of the combustion chambers. The wall segments and cross vanes include sealing mechanisms. The present engine is simple in design and provides a high power to weight ratio.