Motor-driven model airplane having a pusher propeller
AssigneeMabuchi Motor Co., Ltd.
InventorKenichi Mabuchi
Life of this patent
Estimating the term…
Abstract
A motor-driven model airplane which is designed to have a pusher propeller to free the fuselage from aerodynamic influences of propeller slip stream and also to protect the fuselage from such damage as would be caused by collision in flight.
Claims12
A model airplane comprising a fuselage adapted to contain a battery, a battery driven motor having an extension shaft and pusher-type propeller mounted on and driven by said extension shaft at a location behind the tail of said airplane, the rear of said fuselage further including a hollow cylinder-shaped member and a cup-shaped member tightly fixed to said cylinder-shaped member, said cup-shaped member having bearing means in the interior thereof, said extension shaft being permitted to rock on said bearing means and a propeller racing device.
A model airplane comprising a fuselage adapted to contain a battery, a battery driven motor having an extension shaft and a pusher-type propeller mounted on and driven by said extension shaft at a location behind the tail of said airplane, there being further included bearing means tightly fixed relative to the rear of said fuselage, said extension shaft being connected to said propeller and an extension-shaft coupler for detachably connecting said extension shaft to the output shaft of said motor.
A model airplane comprising:
- a fuselage;
- main wings secured to said fuselage;
- a battery located near the nose of said fuselage;
- a motor mounted close to said main wings and driven by said battery;
- an extension shaft driven by said motor;
- a bearing for said extension shaft, said bearing being positioned at the rear end of said fuselage;
- a pusher-type propeller mounted on and driven by said extension shaft at a location behind the tail of said airplane;
- and
- means for setting the axis of propeller revolution to said fuselage, and said propeller being so mounted that the axis of propeller revolution is substantially directed to the center of gravity of the airplane.
Dependencies are inferred from the claim text.