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
Hand truck brake
Electronic device that includes ranked control units that are connected together and control method thereof
Transesophageal ultrasound using a narrow probe
Animal waste disposal system
Lockout forward flip lever for power saw
Electronic device having liquid crystal display device
Dual-homing for ethernet line services
  Randomly Featured Patents
Image sensing device and fabrication thereof
Method and apparatus for the treatment of plastic materials
Wire bonding method, semiconductor device, circuit board, electronic instrument and wire bonding device
Optical pickup for 3-D data storage reading from the multilayer fluorescent optical disk
Method for testing a static random access memory
Method and apparatus for digital communication
Process for secretory production of a calcium-binding protein
Maltitol composition and process for preparing it
Mobile and wireless information dissemination architecture and protocols