Title:
【発明の名称】ヘリコプター玩具
Document Type and Number:
Japanese Patent JP2646267
Kind Code:
B2
Abstract:
In a helicopter toy, a plurality of rotor blades are mounted to a flying body for rotation about a rotational axis and for angular movement about their respective pivotal axes extending perpendicularly to the rotational axis so that the rotor blades have their respective angles of attack which can be altered in pitch. An attack-angle altering unit is provided for altering the angles of attack of the respective rotor blades such that, when a power is transmitted to the rotor blades from a power source to rotate the rotor blades about the rotational axis, the angles of attack of the respective rotor blades are brought to their respective plus pitches to climb the flying body, while, when the transmission of the power from the power source to the rotor blades is released, the angles of attack of the respective rotor blades are brought to their respective minus pitches to cause the flying body to descend.
Inventors:
OOSAWA KENICHI
KISHI TAKESHI
KISHI TAKESHI
Application Number:
JP14347789A
Publication Date:
August 27, 1997
Filing Date:
June 06, 1989
Export Citation:
Assignee:
WAIRUDO GYAA JUGEN
International Classes:
A63H27/127; A63H27/133; B64C11/34; (IPC1-7): A63H27/133
Domestic Patent References:
| JP6129381A | ||||
| JP53143435A | ||||
| JP4418460B1 | ||||
| JP353426B1 |
Attorney, Agent or Firm:
Masami Nakamura (1 outside)