Patents by Inventor Krista Winfree

Krista Winfree 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: 6830115
    Abstract: An axle driving apparatus of the invention is available for an economical vehicle having a belt type stepless transmission. The axle driving apparatus includes a pair of axles connected to respective drive wheels, a propelling transmission mechanism, and a steering transmission mechanism. The propelling transmission mechanism is drivingly connected to said prime mover through said belt type stepless transmission so as to transmit speed-variable output rotation of said belt type stepless transmission to both said axles, thereby rotating said axles together at various speeds in a common direction selected from two opposite directions for forward and backward traveling of said vehicle. The steering transmission mechanism is drivingly connected to said prime mover so as to transmit two oppositely directive output rotations to said respective axles, thereby differentially rotating said axles at various differences of rotational speed between said axles.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: December 14, 2004
    Inventors: Hideaki Okada, Norihiro Ishii, Robert Abend, Krista Winfree
  • Publication number: 20030213625
    Abstract: An axle driving apparatus of the invention is available for an economical vehicle having a belt type stepless transmission. The axle driving apparatus comprises a pair of axles connected to respective drive wheels, a propelling transmission mechanism, and a steering transmission mechanism. The propelling transmission mechanism is drivingly connected to said prime mover through said belt type stepless transmission so as to transmit speed-variable output rotation of said belt type stepless transmission to both said axles, thereby rotating said axles together at various speeds in a common direction selected from two opposite directions for forward and backward traveling of said vehicle. The steering transmission mechanism is drivingly connected to said prime mover so as to transmit two oppositely directive output rotations to said respective axles, thereby differentially rotating said axles at various differences of rotational speed between said axles.
    Type: Application
    Filed: May 17, 2002
    Publication date: November 20, 2003
    Inventors: Hideaki Okada, Norihiro Ishii, Robert Abend, Krista Winfree