Breather assembly for an internal combustion engine
AssigneeHarley-Davidson Motor Company Group, Inc.
InventorsDouglas D. Reichardt, Charles J. Lamb
Life of this patent
Estimating the term…
Abstract
A rocker box assembly for a motorcycle engine having a cylinder head. The rocker box assembly includes a base, a cover, and a breather assembly. The base is configured to be coupled to the cylinder head. The cover is coupled to the base and cooperates with the base to at least partially define a rocker chamber and to at least partially define a breather assembly housing within the rocker chamber. The breather assembly is positioned within the breather assembly housing and is operable to vent a pressure pulse from within the engine.
Claims18
A rocker box assembly for a motorcycle engine having a cylinder head, the rocker box assembly comprising:
- a base configured to be coupled to the cylinder head, the base including a receiving aperture;
- a rocker chamber cover coupled to the base and cooperating with the base to at least partially define a rocker chamber, the cover defining a chamber that cooperates with the receiving aperture of the base to at least partially define a breather assembly housing within the rocker chamber, the cover further including an outlet aperture;
- and
- a breather assembly positioned within the breather assembly housing and operable to vent a pressure pulse from within the engine out of the rocker chamber, the breather assembly being operable to vent the pressure pulse in an upward direction and out of the breather assembly through the outlet aperture of the cover.
A breather assembly for a motorcycle engine having a cylinder head, a base coupled to the cylinder head, a cover coupled to the base and cooperating with the base to at least partially define a rocker chamber, the breather assembly comprising:
- a body including a baffle portion defining a serpentine path, the body integrally formed as a single piece and configured to be disposed within the rocker chamber;
- and
- a check valve member coupled to the body,
- wherein body of the breather assembly defines a longitudinal axis extending generally centrally through the breather assembly, and wherein the baffle portion of body includes a plurality of fins orientated at an angle with respect to the longitudinal axis, and wherein the angle is greater than about 22.5 degrees.
Dependencies are inferred from the claim text.