136392 ⎘
Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having pistons with rotary and reciprocating motion, i.e. spinning pistons
Rotatable piston assembly
#2ROTATABLE PISTON ASSEMBLY
#3APPARATUS WITH A BUTTERFLY MECHANISM INCORPORATED THEREIN
#4INTERNAL COMBUSTION BUTTERFLY ENGINE
#5Hybrid drive system for a motor vehicle, and method of operating a motor vehicle
#6A HYDRAULIC OR PNEUMATIC DRIVE SYSTEM, AND A MOTOR AND A PUMP THEREFOR
#7External combustion engine
#8INTERNAL COMBUSTION ROTARY PISTON ENGINE
#9Axially rotating free piston
#10Counterpoise engine
#11RECIPROCATING ENGINES
#12Bendah rotary cycle internal combustion engine and air compressor
#13CLOSED WAVE SHAPED GROOVE
#14Systems and methods for facilitating conversion between reciprocating linear motion and rotational motion
#15Internal combustion engine
#16Internal combustion engine
#17Method and device for converting heat energy into mechanical energy
#18Rotary valve seal
#19Multi-chamber internal combustion engine
#20Internal combustion engine with novel fuel / air delivery system
#21Diesel engine
#22Internal combustion engine with novel fuel/air delivery system
#23Rotary piston machine
#24Internal combustion butterfly engine