Patents by Inventor Thomas O. Grichen

Thomas O. Grichen 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: 6532948
    Abstract: A toy rocket set that includes a rocket and a launcher for the rocket that utilizes compressed air to launch the rocket. The upper end of the launch tube has an end cap secured thereupon by a threaded connection. An annular elastomeric element is retained between the end cap and the launch tube body. As the end cap is tightened onto the launch tube body, the elastomeric element is compressed resulting in an adjustable frictional engagement with a radially enlarged nose cone on the rocket. The centerpoint of the parachute is secured by a tether to a removable link in the rocket body. The removable link is retained within the rocket body by a slidable rod. During flight, when the rocket inverts, the rod slides within the rocket body to release the link and permit the parachute to deploy to an open position.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: March 18, 2003
    Inventor: Thomas O. Grichen
  • Publication number: 20020020401
    Abstract: A toy rocket set that includes a rocket and a launcher for the rocket that utilizes compressed air to launch the rocket. The upper end of the launch tube has an end cap secured thereupon by a threaded connection. An annular elastomeric element is retained between the end cap and the launch tube body. As the end cap is tightened onto the launch tube body, the elastomeric element is compressed resulting in an adjustable frictional engagement with a radially enlarged nose cone on the rocket. Fluid pressure is then increased within a chamber within the launch tube. Once the fluid pressure increases to the point where the upward force upon the rocket overcomes the frictional forces between the elastomeric element and the nose cone, the rocket is launched from the launch tube. The toy rocket has a novel and advantageous parachute deployment mechanism. The edges of a parachute are secured to the rear end of the rocket body by several links.
    Type: Application
    Filed: August 17, 2001
    Publication date: February 21, 2002
    Inventor: Thomas O. Grichen