General

Coates International, Ltd. ("we" or the "Company") has developed over a period of more than 25 years a patented spherical rotary valve system which is adaptable for use in piston-driven internal combustion engines of many types.

The Coates rotary valve system is designed to replace the intake and exhaust conventional "poppet valves" currently used in almost all piston-driven stationary, automotive, motorcycle and marine engines. Unlike conventional valves which protrude into the engine cylinder, the Coates rotary valve system utilizes spherical valves that rotate in a cavity formed between a two-piece cylinder head....