Patent ID: 7421994
Filing Date: 2008-09-09
Classification: F01L,Y10T

Abstract:
1. A plunger assembly for use in a hydraulic lash adjuster for eliminating lash in a valve train of an internal combustion engine, comprising: a) a plunger for sliding within a lash adjuster body, wherein an axial bore defines a low-pressure oil chamber; and b) a cartridge sub-assembly disposed in said plunger to separate said low-pressure oil chamber from a high-pressure oil chamber, said cartridge sub-assembly including a cartridge body, a check valve, and a seat element, wherein said cartridge body includes a flange with a rolled over lip end, wherein said seat element and said check valve are retained within said cartridge sub-assembly, wherein said seat element is disposed between said flange and said rolled over lip end, and wherein said rolled over lip end is substantially parallel to said flange.