Amusement helicopter

摘要

Helicopter intended for use as a toy and raisable on a four-bar linkage by a hydraulic cylinder through a hydraulic circuit. An electrical circuit provides for alternately flashing flight lights, pulsating front gun lights, and for providing through a speaker a chopper sound and a phasor gun sound. The hydraulic circuit includes a novel single spool for regulating flow through a valve between a combined motor pump tank to a cylinder at a fast speed up and slow speed down. The valve is mechanically linked to the joy stick. The four-bar linkage includes a safety bar which overrides the joy stick in the event that an individual or an object is positioned under the linkage in an elevated condition. The hydraulic circuit is provided with a joy stick stop limit within the joy stick throttle structure, a valve control stop link, a safety bar limit, and the inherent four-bar linkage limit, all of these limits acting to keep oil in the cylinder and provide for safety of operation. All of the electromechanical circuitry is positioned in one box which mounts within the enclosure providing for accessible and ease of replacement servicing as required.