Patent ID: 7530339
Filing Date: 2009-05-12
Classification: F01L,Y10T

Abstract:
1. A valve system lifter for use with a cam and a push rod in a combustion engine, the lifter comprising: a lifter body comprising a first material selected from the group consisting of cast iron, steel, stainless steel, ferrous alloy, non-ferrous material, bronze, and copper-based non-ferrous materials, wherein the lifter body is adapted for connection to a push rod; a face pad, comprising a second material selected from the group consisting of metal carbide, tungsten carbide, refractory metal carbide, cemented tungsten carbide, tungsten carbide with cobalt binder, cobalt, titanium carbide, niobium carbide, and tantalum carbide; a connector material connecting said face pad to the lifter body so that the face pad is adapted to contact a cam, said connector material having two layers comprising silver and a layer comprising copper.