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
Image surveillance system and method of detecting whether object is left behind or taken away
Normalized contextual performance metric for the assessment of fatigue-related incidents
Adaptive frame scanning scheme for pulsed X-ray imaging
Performing failover for a plurality of different types of videoconferencing devices
Content reproduction apparatus and content processing method therefor
Nanowire structured photodiode with a surrounding epitaxially grown P or N layer
Isolated nucleic acid molecule encoding an antibody that reduces GDF-8 activity
  Randomly Featured Patents
Projection lamp reflector
Liquid level indicator
Board game apparatus
Sealing or guiding assemblies and methods of making them
Handheld telephone
Process for producing iron briquettes and/or cold iron sponge
Stacked die semiconductor device
Re-bar support
Method for making isobutyric acid