Patents by Inventor Johannes Weyandt

Johannes Weyandt 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).

  • Chain tensioner for an internal-combustion engine
    Patent number: 5117786
    Abstract: A chain tensioner for an internal-combustion engine comprises a hydraulic piston which is longitudinally guided in a housing bore and on which a tensioning shoe is placed on one side and which, from the direction of the other side, is pressed against the chain by a coil spring. For the damping of chain thrashing, the hydraulic piston is acted upon by hydraulic pressure in the tensioning direction as well as in the opposite direction.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: June 2, 1992
    Assignees: Dr. Ing. h.c.F. Porsche AG, Hydraulik-Ring GmbH
    Inventors: Alfred Trzmiel, Matthias Kroener, Johannes Weyandt
  • Chain drive tensioning and adjusting arrangement
    Patent number: 5109813
    Abstract: An arrangement and method for the hydraulic tensioning and adjusting of a camshaft chain drive has a chain which winds around both camshafts. Together with its tensioning arrangement, the chain is shifted into its transverse direction. The load end of the chain is thus lengthened, and the loose end of the chain is shortened, or vice versa. Engine oil can be used as the hydraulic fluid. The fluid pressure rises with the rotational engine speed and is used either directly or by way of a control slide valve for adjustment of the tensioning arrangement.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: May 5, 1992
    Assignees: Dr. Ing. h.c.F. Porsche AG, Hydraulik-Ring GmbH
    Inventors: Alfred Trzmiel, Olaf Fiedler, Johannes Weyandt
  • Oil pan for an internal combustion engine
    Patent number: 4930469
    Abstract: An oil pan, which is made of plastic, has a baffle pot insert on a bottom thereof which is formed by a one piece pot-shaped plastic component. This baffle pot insert extends from the exterior side of the bottom into the oil pan. Further, a collar of the baffle pot insert rests against a bottom section of the oil pan. Screws, which penetrate the collar and are turned into threaded metal inserts of the oil pan, are used for fastening the baffle pot insert to the oil pan.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: June 5, 1990
    Assignee: Dr. Ing. h.c.F. Porsche AG
    Inventors: Axel Kamprath, Johannes Weyandt
  • Motorcycle
    Patent number: D462638
    Type: Grant
    Filed: July 9, 2001
    Date of Patent: September 10, 2002
    Assignee: Harley-Davidson Motor Company Group, Inc.
    Inventors: Willie G. Davidson, Louis Netz, Kirk Rasmussen, Jeff Coughlin, Rick Pierson, Brian Campbell, Alexander Bozmoski, Anthony Senger, Jeff Romenesko, Robb Dennert, Bob Hofmann, Al Zemlicka, Mike Hamann, John Myers, Mike Nixdorf, Patrick Keller, Manfred Schuermann, Klaus Fuoss, Andreas Schneider, Thomas Geffert, Stefan Fegg, Johannes Weyandt, Wolfgang Schnepf, Alfons Linder, James McNaughton, Frank Savage, Paul Lohr, Friedrich Seiler, Chris Ojstrsek
  • Motorcycle
    Patent number: D482300
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: November 18, 2003
    Assignee: Harley-Davidson Motor Company Group, Inc.
    Inventors: Willie G. Davidson, Louis Netz, Kirk Rasmussen, Jeff Coughlin, Rick Pierson, Brian Campbell, Alexander Bozmoski, Anthony Senger, Jeff Romenesko, Robb Dennert, Bob Hofmann, Al Zemlicka, Mike Hamann, John Myers, Mike Nixdorf, Patrick Keller, Manfred Schuermann, Klaus Fuoss, Andreas Schneider, Thomas Geffert, Stefan Fegg, Johannes Weyandt, Wolfgang Schnepf, Alfons Linder, James McNaughton, Frank Savage, Paul Lohr, Friedrich Seiler, Chris Ojstrsek
  • Portion of a motorcycle frame
    Patent number: D498182
    Type: Grant
    Filed: November 7, 2003
    Date of Patent: November 9, 2004
    Assignee: Harley-Davidson Motor Company Group, Inc.
    Inventors: Willie G. Davidson, Louis Netz, Kirk Rasmussen, Jeff Coughlin, Rick Pierson, Brian Campbell, Alexander Bozmoski, Anthony Senger, Jeff Romenesko, Robb Dennert, Bob Hofmann, Al Zemlicka, Mike Hamann, John Myers, Mike Nixdorf, Patrick Keller, Manfred Schuermann, Klaus Fuoss, Andreas Schneider, Thomas Geffert, Stefan Fegg, Johannes Weyandt, Wolfgang Schnepf, Alfons Linder, James McNaughton, Frank Savage, Paul Lohr, Friedrich Seiler, Chris Ojstrsek