Patent ID: 6477997
Filing Date: 2002-11-12
Classification: F01L

Abstract:
An apparatus for controlling the deactivation of a movable valve comprising:a lost motion sleeve having a generally tubular body with a smaller diameter first portion and a larger diameter second portion connected by a shoulder, said first portion having an open end adapted to slidingly receive a valve; a rocker piston slidingly disposed in an open end of said second portion of said sleeve; a clamping means positioned adjacent an exterior surface of said second portion of said sleeve and being selectively activated for preventing movement of said sleeve; and a generally non-compressible fluid retained in said second portion of said sleeve whereby when a valve is inserted into said open end of said first portion of said sleeve in a valve closed position, said fluid is trapped between the valve and said rocker piston, and when said rocker piston is moved toward the valve and said clamping means is activated, the valve is moved relative to said sleeve to a valve opened position, and when said rocker piston is moved toward the valve and said clamping means is not activated, said sleeve is moved relative to the valve and the valve remains in the valve closed position.