Patent ID: 8210147

Claim:
An improved head adapted to be secured to an internal combustion engine of the type comprising a rigid block, a primary crankshaft rotatably disposed within said block, at least one cylinder defined in said block, at least one power piston driven by said crankshaft and reciprocated within said at least one cylinder, the head comprising: means for attaching said head to said block over said at least one piston; at least one pair of exhaust ports formed in said head adapted to be disposed proximate said piston; at least one pair of intake ports formed in said head adapted to be disposed proximate said piston; an elongated, tubular exhaust tunnel disposed in said head proximate said head exhaust ports, said exhaust tunnel adapted to be oriented transversely with respect to said cylinder; an elongated, tubular intake tunnel disposed in said head proximate said head intake ports, said intake tunnel adapted to be oriented transversely with respect to said cylinder; a tubular, sliding exhaust valve disposed within said cylindrical exhaust tunnel in said head, said exhaust valve comprising an exhaust gas port and an elongated internal tubular passageway in fluid flow communication with said valve exhaust gas port for exhausting gases and a plurality of coaxially mounted, spaced apart, external sealing rings; a tubular, sliding intake valve disposed within said intake tunnel in said head, said intake valve comprising an intake gas port and an elongated, internal tubular passageway in fluid flow communication with said valve intake gas port for intaking a raw fuel/air mixture and a plurality of coaxially mounted, spaced apart, external sealing rings; a slide valve crankshaft rotatably mounted within said head for reciprocating said sliding exhaust and intake valves in response to rotation of said primary crankshaft, such that the exhaust valve gas port is aligned with the exhaust ports in said head during an exhaust stroke of said piston and otherwise said exhaust valve closes said head exhaust ports, and such that the intake valve gas port is aligned with the intake ports in said head during an intake stroke of said piston and otherwise said intake valve closes said head intake ports; wherein said slide valve crankshaft has an axis of rotation oriented generally perpendicularly with respect to said slide valves; valve connecting rods mechanically connecting said slide valve crankshaft with said sliding intake and sliding exhaust valves; and, wherein the ports forming said at least one pair of exhaust ports in said head are separated from one another by bridges that contact rings on said exhaust valve, and the ports forming said at least one pair of intake ports in said head are separated from one another by bridges that contact rings on said intake valve.