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
Methods for integrating the production of cellulose nanofibrils with the production of cellulose nanocrystals
Driving support device, method, and program
Optimizing federated and ETL'd databases with considerations of specialized data structures within an environment having multidimensional constraint
System and method for ranking content and applications through human assistance
System and method for secure power systems infrastructure communications
Triazole derivatives as ghrelin analogue ligands of growth hormone secretagogue receptors
Optical sensor and electronic apparatus
  Randomly Featured Patents
Temperature sensing unit, parts therefor and methods of making the same
Method for depiction of moving parts in a body by nuclear magnetic resonance experiment
Computer mouse
Adsorbent, method for producing same, and method for processing oil-containing waste water
Method and apparatus for profiling terrain
Filtering device and method
Degradable particulates as friction reducers for the flow of solid particulates and associated methods of use
Adhesive articles with improved air egress
Method and apparatus for processing a semiconductor wafer on a robotic track having access to in situ wafer backside particle detection
Method of manufacturing semiconductor device