Abstract: The present invention relates to a propeller control mechanism comprising a center, a first group, and a second group. This mechanism is capable of controlling the angle of attack of the propeller blades without auxiliary actuators or external linkages and minimizing the propeller blades' motion range. Furthermore, this mechanism is applicable not only to aerial vehicles but also to vehicles on the surface of water or underwater.

Abstract: A toy comprising a rotor and a centrally arranged capsule, wherein the capsule comprises an actuator mechanism that is configured to cooperate with a launch element and an actuator element, wherein the actuator element is configured for engaging with the actuator mechanism to transfer a momentum to the rotor, whereby the rotor can rotate and be launched from the launch element, wherein the capsule is a separate part relative to the rotor, and the capsule comprises at least two capsule parts whereby the two capsule parts can be opened when the rotor and the capsule are separated, and wherein rotor, capsule and actuator mechanism are connected to each other to the effect that the momentum from the actuator element is transferred to the actuator mechanism that conveys the momentum on from the capsule to the rotor, when the at least to capsule parts are closed.

Abstract: A set includes a launchable doll having a body portion and wings fixed to the body portion between a torso portion and a waist portion of the body portion to impart aerodynamic lift to the doll when the doll is rotated and the legs are fixed into a substantially vertical orientation when the wings are fixed to the body portion; and a launcher including a base, a tube that contains the legs and a mechanism that rotates the tube and the doll with respect to the base.

Abstract: A novel flying toy comprising a ringed or banded rotor launched by a pulled string. The rotor has an outer ring or band and an inner circular disk connected by a plurality of curved blades. The rotor rests upon a spindle set in one end of a handle grasped by the user. The rotor is loosely held by pins in the spindle. A string is wound around the spindle and pulled by the user. The spindle and rotor are spun rapidly causing the rotor to lift off the pins and into the air. The outer band contains air near the blades, and coupled with the configuration of the blades, contributes greatly to aerodynamic lift and flight stability.

Abstract: An audio and video effect flight toy comprises a rod and a supporter. The supporter is connected to the rod. A groove is formed on the supporter. A slender rope winds around the supporter; and another end of the slender rope is tied with a drag handle. A disk has a round disk at a center, and at least one blade is formed at an outer ring of the round disk; while another end of each blade is connected to an outer ring circularly. A bottom of the round disk is protruded with a post. A circuit unit is installed on the round disk. The circuit unit is formed by a light emitting pieces and an audio element. The top of the round disk, connections of the round disk with each blade, and connections of each blade with the outer ring are installed with power joints for being installed with light emitting pieces.

Abstract: A flying toy including a handle portion having an upper end. A spindle is mounted atop the upper end and has a bore extending downwardly therethrough. A rotating rod extends through the bore and into the upper end of the handle to allow relative rotation of the spindle upon the handle. The spindle has a pair of pins extending upwardly therefrom. A propeller portion is coupled with respect to the circular platform of the handle portion. The propeller portion includes an inner circular disk. The inner circular disk has a plurality of radially extending blades integrally formed with a peripheral edge thereof. Each of the blades have a predetermined angle of orientation. A length of string is secured to the spindle. The length of string has an end fixedly secured to the spindle with a remainder of the string being wrappedly disposed around the rotating rod just prior to operation of the toy.

Abstract: A spinning figurine toy has a weighted skirt or disc to provide angular momentum, a lower spindle, a spring attached to the lower spindle, a foot inserted into the lower end of the spring, and a rod fixed in the foot and able to move vertically within the lower spindle. When the toy is spun upon the foot, bouncing or jumping motion may be imparted to the toy by dropping it from a height because of the resilient nature of the spring. A pull-string operated hand launcher having a helical spindle on top fits into a corresponding helical aperture in the foot to provide a means of setting the toy in motion at high speed and of releasing it.

Abstract: A main rotor is provided for use in a rotary winged model aircraft. The main rotor includes a rotor hub assembly rotatable about a vertical axis and at least two main rotor blades. Each of the main rotor blades extends in a radial direction from the rotor hub assembly. The main rotor blades each include a tip end positioned to lie in spaced-apart relation to the rotor hub assembly and a root end coupled to the rotor hub assembly for pivotable folding movement from an initial horizontal position perpendicular to the vertical axis about a horizontal axis through a desired folding angle of about 90.degree.. Forces transmitted to the rotor hub by the rotor blade during a crash-landing of a rotary winged model aircraft including the main rotor are minimized due to movement of the rotor blades through the desired folding angle.

Abstract: A flying amusement device including first and second rotary elements separated by a hub. Each of the rotary elements includes a set of lift members which provide lift in a common direction when the device is rotated about the hub. A length of flexible line is connected to the hub and wound thereabout prior to use. The device is held in the user's hand with the free end of the flexible line connected to the user's throwing hand. The device is then thrown outwardly from the body of the user with a snapping motion of the wrist to impart rotation to the device. This rotation produces lift, and further rotation is imparted to the device due to the device unwinding from the flexible line as it travels away from the user. Upon fully unwinding the flexible line from the hub, the continued rotation of the device causes the flexible line to be rewound upon the hub, thus drawing the device back towards the user.

Abstract: The present invention relates to a toy unit having a movable toy and a flat rectangular toy case having an engaging section disposed therein in which the movable toy is detachably set. Support structure is disposed therein for supporting the movable toy when the movable toy starts movement. The toy case includes a power generating assembly, whereby the toy case has a card shape in the state when the movable toy is set in the engaging section of the toy case.