Internal-combustion engines – Rotary – With compression – combustion – and expansion in a single...
Reexamination Certificate
2006-02-07
2006-02-07
Richter, Sheldon J (Department: 3748)
Internal-combustion engines
Rotary
With compression, combustion, and expansion in a single...
C123S04400R, C416S128000, C416S129000, C418S161000, C418S164000
Reexamination Certificate
active
06994071
ABSTRACT:
A counter-rotating 2 cycle piston engine with a combustion chamber and an output shaft rotatably mounted to rotate independently about the same propeller centerline of an aircraft. The Internal combustion power is transmitted to the output shaft by means of a conventional piston, rod, crankshaft configuration journaled to the combustion chamber or engine block in the traditional manner thereby producing concurrent rotation of the shaft and counter-rotation of the engine block. Interior surfaces of the combustion chamber and pistons are angled to control the oil flow inside the crankcase and eliminate unwanted ponding. The pistons are modified to transfer fluid accumulations to the combustion chamber. A throttle is located at the axis of rotation to function normally without the effects of centrifical force. Dual propellers mounted on the shaft and on the block improve thrust performance, balance the torques and moments of inertia of the two counter-rotating masses, All rotational output torque automatically balances itself between counter rotating propellers and is converted into propulsion. No rotational torque is allowed to be transmitted to the airframe through the counter-rotating engine mount.
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