Reciprocable piston internal combustion engine, especially diese
Reciprocating piston internal combustion engine with twist formi
Retractable seat valve and method for selective gas flow...
Rocker cover gasket assembly with integral valve stem seals
Rotary engine valve with improved seals and lubrication system
Rotary plug
Rotary sleeve port for an internal combustion engine
Rotary valve
Rotary valve
Rotary valve
Rotary valve apparatus for internal combustion engines and metho
Rotary valve arrangement
Rotary valve arrangement
Rotary valve assembly
Rotary valve assembly
Rotary valve assembly used with reciprocating engines
Rotary valve construction for an internal combustion engine
Rotary valve construction utilizing a compressed gas as lubrican
Rotary valve control system for internal combustion engines and
Rotary valve device for internal combustion engines