Belt And Sprocket Patents (Class 280/471)
  • Patent number: 4629950
    Abstract: This invention is a variable automatic forward/reverse control device for an unattended baby cart which is particularly designed for the housewife who is too busy at home to take care of her baby in the cart. Placing the baby in this cart equipped with this control device and taking advantage of the device may make this cart automatically advance a preset distance and then automatically back a preset distance, without worrying about this cart ramming against a room wall or some stationary objects indoors. Thus, the baby will feel quite safe and not cry. In addition, this cart may be provided with music to let the housewife use her spare time to do some handicraft or other chores. Furthermore, the timing equipment or rang-finding computer in the control device may be adjusted to close to zero time so that this cart can slightly vibrate to-and-from in situ so that in such circumstances, the baby will not cry.
    Type: Grant
    Filed: September 27, 1985
    Date of Patent: December 16, 1986
    Inventor: Huang C. Ching
  • Patent number: 4575354
    Abstract: A running toy has a detachable non-circular wheel attached to an axle driven by a known prime mover, such as spring-powered prime mover and the like. The wheel is molded from an elastic material, such as rubber, soft plastic and the like, and has large projections and recesses formed on the peripheral surface thereof to make the running toy perform various interesting motions which are not conventionally obtained as well as to offer favorable effects.
    Type: Grant
    Filed: June 23, 1983
    Date of Patent: March 11, 1986
    Assignee: Takara Co., Ltd.
    Inventors: Yoichi Wakayama, Hirohisa Sato, Masumi Terui
  • Patent number: 4073500
    Abstract: This disclosure pertains to a rigid board-like surface having three casters affixed to the undermost surface thereof. Two of the casters are disposed in spaced apart relationship and co-axially aligned at one end of the board. The remaining caster is located at the other end of the board. Each caster utilizes an eccentric wheel, causing the board to undulate when rolling down an inclined surface. An inverted U-shaped rail is affixed to the uppermost surface of the board to which is attached a rope-like cord utilized to provide a grasp for the user of the apparatus.
    Type: Grant
    Filed: August 24, 1976
    Date of Patent: February 14, 1978
    Inventor: Leo Campeau