Spherical joint connecting rod holder rings
AssigneeCummins Engine Company, Inc.
InventorsPaul David Wiczynski, Richard Duane Conrow, Siegfried Gustav Mielke
Life of this patent
Estimating the term…
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.
Claims10
A pair of holder ring halves operative to retain a spherical joint connecting rod within a spherical joint piston, the pair comprising:
- a wall adapted to circumferentially surround a spherical small end of the spherical joint connecting rod;
- a socket defined by an interior surface of the wall, the socket including a lower bearing surface for bearing against the small end;
- and
- at least one groove formed in the interior surface in the socket and extending from an upper perimeter of the socket, the at least one groove operative to channel lubricant from an area above the pair of holder ring halves and into the socket.
Dependencies are inferred from the claim text.