Resources Contact Us Home
Deactivation roller hydraulic valve lifter

Image Number 6 for United States Patent #6668776.

A deactivation hydraulic valve lifter includes an elongate lifter body having a substantially cylindrical inner wall. The inner wall defines at least one annular pin chamber therein. The lifter body has a first end configured for engaging a cam of an engine. An elongate pin housing includes a substantially cylindrical pin housing wall and pin housing bottom. The pin housing wall includes an inner surface and an outer surface. The pin housing bottom defines a radially directed pin bore therethrough. The pin housing is concentrically disposed within the inner wall of the lifter body such that the outer surface of the pin housing wall is adjacent to at least a portion of the inner wall of the lifter body. A deactivation pin assembly is disposed within the pin bore and includes two pin members. The pin members are biased radially outward relative to each other. A portion of each pin member is disposed within the annular pin chamber to thereby couple the lifter body to the pin housing. The pin members are configured for moving toward each other when the pin chamber is pressurized, thereby retracting the pin members from within the annular pin chamber and decoupling the lifter body from the pin housing.

  Recently Added Patents
Filler containing composition and process for production and use thereof
Method and system for utilizing native ethernet as a virtual memory interconnect
Method for selective deposition of a semiconductor material
Content display system
5-lipoxygenase-activating protein (FLAP) inhibitors
Hydrating lounge chair
Solid state lighting devices and associated methods of manufacturing
  Randomly Featured Patents
Drives for wind-up blinds
Methods of and apparatus for making a rodent and lighting protective cable sheath system
Hoops for continuous casting rolls
Light guide spacers for backlighting a reflective display
X-ray optic with varying focal points
Reflection type liquid crystal display element and liquid crystal display unit
Railing and method of manufacture
Process for the conversion of methane
HIF hydroxylase inhibitors