Patents by Inventor Siegfried Gustav Mielke

Siegfried Gustav Mielke 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).

  • Spherical joint connecting rod
    Patent number: 5685267
    Abstract: A spherical joint connecting rod. The connecting rod has a small end which terminates in a sphere or ball, and a big end which is adapted to sliding engage an engine crankshaft. The small end and big end of the connecting rod are coupled by a shank having a substantially elliptical cross-section. The shank has formed therethrough an internal oil passage which allows transmission of lubricating/cooling oil from the engine crankshaft to the spherical joint of the piston and to the piston cooling gallery.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: November 11, 1997
    Assignee: Cummins Engine Company, Inc.
    Inventors: Paul David Wiczynski, Craig Allen Barnes, Richard Belush, Richard Duane Conrow, Siegfried Gustav Mielke
  • Spherical joint connecting rod holder rings
    Patent number: 5669285
    Abstract: Spherical joint connecting rod holder rings. The holder ring is formed in two halves which define a socket in which a spherical small end of the connecting rod is retained. The ring further includes a vertical wall which acts as an oil dam to retain oil in a piston cooling gallery. One or more drain holes are formed in the ring to drain oil from the cooling gallery back to the engine crankcase. Futhermore, one or more grooves are formed in the socket surface in order to channel oil into the socket for lubrication of the spherical small end.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: September 23, 1997
    Assignee: Cummins Engine Company, Inc.
    Inventors: Paul David Wiczynski, Richard Duane Conrow, Siegfried Gustav Mielke