Lock-pin cartridge for a valve deactivation rocker arm assembly

Details Lock-pin cartridge for a valve deactivation rocker arm assembly Lock-pin cartridge for a valve deactivation rocker arm assembly

2006-02-14

2006-02-14

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Rocker

C123S090160, C123S090440

Reexamination Certificate

active

06997152

ABSTRACT:
A lock-pin cartridge for a valve deactivation rocker arm assembly. The cartridge comprises a body having an axial bore having first and second ends, the second end having a closure and a passage therethrough. A piston assembly comprising a locking pin and a piston is disposed in the bore. The locking pin extends through the second end passage to provide latching and unlatching of rocker arm elements. The piston is spaced apart from the ends to define a hydraulic chamber and a spring chamber within the bore on opposite sides of the piston. A spring is disposed in the spring chamber for urging the piston assembly toward one of the first and second ends. The hydraulic chamber includes means for communicating with a supply of hydraulic fluid for actuating the piston assembly.

REFERENCES:
patent: 5515820 (1996-05-01), Sugimoto et al.
patent: 6325030 (2001-12-01), Spath et al.
patent: 6394052 (2002-05-01), Miyasaka et al.

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