Patents by Inventor Jiri Krampera

Jiri Krampera 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).

  • Publication number: 20020074853
    Abstract: An in accordance with every embodiment of the invention eccentrically spoked bicycle front wheel or bicycle rear wheel on its sides has an unequal number of spokes, but a practically equal or exactly equal average tension of the spokes. For several reasons, this wheel in operation is significantly more durable than a comparable conventional eccentrically spoked bicycle front wheel or bicycle rear wheel, which on its sides has an equal number of spokes, but significantly unequal average tensions of the spokes.
    Type: Application
    Filed: December 17, 2001
    Publication date: June 20, 2002
    Inventor: Jiri Krampera
  • Patent number: 5228756
    Abstract: A rim for a spoked bicycle rear wheel has rim holes laterally displaced by an amount (E) from an axis passing through the center of the cross-section of the rim. Such a rim can be subject to undesired tilting under stress imposed by spokes connected between the rim and the wheel hub and placed under tension. The rim side containing the spoke nipples is more highly loaded. To bring about balance of the tensions on both rim sides, the rim cross-section has an asymmetrical shape so that there is more rim material on the more highly loaded side and so that that side is also stiffer. The compressive forces in the rim material are better balanced, making it possible to use less expensive, conventional materials.
    Type: Grant
    Filed: March 10, 1992
    Date of Patent: July 20, 1993
    Inventor: Jiri Krampera