Patents by Inventor David G. Wolfram

David G. Wolfram has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6540580
    Abstract: A yo yo toy is formed of a pair of substantially disk-shaped body halves joined in a spaced arrangement by a center shaft. A quantity of string is secured to the center shaft and wound within the space. Each body half includes a receptacle and a cover pivotally secured thereto and lachable in a closed position. A plurality of toy items are secured within the receptacle and cover of one body half while the remaining body half defines a play feature background and play surface for the toy figure in the open position.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: April 1, 2003
    Assignee: Mattel, Inc.
    Inventor: David G. Wolfram
  • Patent number: 5478269
    Abstract: A toy figure includes a torso supporting a pair of pivotally secured legs and a pair of pivotally secured arms. One of the legs is further pivotable in an inward direction and is coupled to a pivotal lever supported within the torso interior. One of the arms is coupled to a grasping claw having a fixed jaw and a movable jaw pivotal with respect thereto. A cable mechanism is coupled between the movable jaw and the internally supported lever to provide opening and closing of the grasping claw in response to inward motion of one leg with respect to the torso. The opening and closing of the grasping claw is independent of the pivotal motion of the arm and the rotational motion of the grasping claw and is instead solely dependent upon the inward motion of the coupled leg.
    Type: Grant
    Filed: February 9, 1995
    Date of Patent: December 26, 1995
    Assignee: Mattel, Inc.
    Inventor: David G. Wolfram