Patents by Inventor Martin Jäkel

Martin Jäkel 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: 8434441
    Abstract: A connecting device for the pivotal and loss-prevention joining of an actuating lever (1) and a support element (6) of a valve operating mechanism of a combustion engine. The actuating lever (1) has, in a supporting section (3), a spherical cap-shaped cavity (5) inside of which the spherical end (7) of the supporting element (6) may be placed. A recess and/or undercut (8) is formed underneath the spherical end (7) in the supporting element (6). The actuating lever (1) has, in the supporting section (3), a spherical upper surface (4) above the spherical cap-shaped cavity (5). A securing element (9) joins the actuating lever (1) and the supporting element (6) to one another. This securing element (9) has a U-shaped cross-sectional shape with an upper and a lower limb (10, 11) that are joined to one another via a joining section (12).
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: May 7, 2013
    Inventors: Manfred Günthner, Martin Jäkel, Stephen Ernstberger, Franz-Holger Woitowitz
  • Publication number: 20110214527
    Abstract: A connecting device for the pivotal and loss-prevention joining of an actuating lever (1) and a support element (6) of a valve operating mechanism of a combustion engine. The actuating lever (1) has, in a supporting section (3), a spherical cap-shaped cavity (5) inside of which the spherical end (7) of the supporting element (6) may be placed. A recess and/or undercut (8) is formed underneath the spherical end (7) in the supporting element (6). The actuating lever (1) has, in the supporting section (3), a spherical upper surface (4) above the spherical cap-shaped cavity (5). A securing element (9) joins the actuating lever (1) and the supporting element (6) to one another. This securing element (9) has a U-shaped cross-sectional shape with an upper and a lower limb (10, 11) that are joined to one another via a joining section (12).
    Type: Application
    Filed: April 15, 2011
    Publication date: September 8, 2011
    Inventors: Manfred Günthner, Martin Jäkel, Stephan Ernstberger, Franz-Holger Woitowitz
  • Patent number: 6651329
    Abstract: The inventions provides a method of making a lever-type cam follower (2) out of thin-walled light-weight sheet metal for loading at least one gas exchange valve of an internal combustion engine, said cam follower comprising two side walls (12a, 12b) which, together with a crossbeam (11) that connects these side walls to each other, form a U-shaped cross-sectional profile pointing away from the gas exchange valve, the cam follower further comprising two finger-like tabs (5a, 5b) for receiving a stem end of the gas exchange valve, which tabs are configured on one end (3) of the cam follower (2) as extensions of the side walls (12a, 12b) and are bent through 180° onto an undersurface (9) of the crossbeam (11), said method comprising the following steps which may be supplemented with further intermediate steps: a) punching out a blank (1) out of sheet metal with the tabs (5a, 5b) being bulged outward in arc-shaped curves that are configured as mirror images of each other in respect of a central longitudinal
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: November 25, 2003
    Assignee: Ina Walzlager Schaeffler oHG
    Inventors: Walter Speil, Martin Jäkel