Device for inclining the tip path plane of a propeller of toy he

Details Device for inclining the tip path plane of a propeller of toy he Device for inclining the tip path plane of a propeller of toy he

1990-11-08

1992-05-05

Hafer, Robert A.

Amusement devices: toys

Aerodynamically supported or retarded

446 36, 446 37, A63H 1700

Patent

active

051103141

ABSTRACT:
In a propeller blade tip path plane-inclining device for a toy helicopter, a propeller is disposed asymmetrically with respect to a rotation shaft, and the position of the propeller in the plane of rotation of the propeller is detected, and the speed of rotation of the propeller is increased and decreased at predetermined regions so as to change the flexing of the propeller caused by a difference in the rotational speed, so that the propeller blade tip path plane is inclined, thereby determining the direction of the force of propulsion of a fuselage.

REFERENCES:
patent: D158936 (1950-06-01), Crowder
patent: 158937 (1950-06-01), Crowder
patent: 3108641 (1963-10-01), Taylor
patent: 3857194 (1974-12-01), Guttman
patent: 4272041 (1981-06-01), Mabuchi et al.
patent: 4981456 (1991-01-01), Sato et al.

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