Patents by Inventor Harold J. Cronquist

Harold J. Cronquist 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).

  • Roll enhancing snowmobile ski suspension for deeper snow riding
    Patent number: 8827291
    Abstract: Disclosed is an improved snowmobile ski suspension including a pair of airspring biasing mechanisms whose air volumes are interconnected by a cross linking conduit that incorporates an open and closed switch. In an alternative embodiment a simpler configuration is provided for which does not include the use of an open or closed switch manifold.
    Type: Grant
    Filed: October 29, 2011
    Date of Patent: September 9, 2014
    Inventors: Harold J. Cronquist, Troy L. Leiphart, Gerard John Karpik
  • Roll enhancing snowmobile ski suspension for deeper snow riding
    Publication number: 20120112424
    Abstract: Disclosed is an improved snowmobile ski suspension including a pair of airspring biasing mechanisms whose air volumes are interconnected by a cross linking conduit that incorporates an open and closed switch. In an alternative embodiment a simpler configuration is provided for which does not include the use of an open or closed switch manifold.
    Type: Application
    Filed: October 29, 2011
    Publication date: May 10, 2012
    Inventors: Harold J. Cronquist, Troy L. Leiphart, Gerard John Karpik