Patents by Inventor Jonas Wall

Jonas Wall 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: 6082405
    Abstract: A valve cone comprises a cylindrical body extending along a longitudinal axis. The body has a cylindrical surface with at least one, axially extending recess. The recess extends inside a contour line between a first end position at a first end of the cylindrical body and a second end position, which is located between the first end of the body and the opposite second end of the body. The cross-sectional area of the recess, in a plane perpendicular to its longitudinal axis, gradually decreases from a maximum value close to the said first end towards the second end position. A valve cone of the type described above is arranged in a valve. In a method for manufacturing the valve cone, the radial recesses are formed by cutting in a single axial-radial cutting motion.
    Type: Grant
    Filed: December 31, 1998
    Date of Patent: July 4, 2000
    Assignee: Tac AB
    Inventors: Patrik Qvarfordh, Jonas Wall, Nils Hjelte, Goran Dahl, Christer Hernrup