Rocker arm of the cam-follower type for operating two valves

Claim 1

A rocker arm of the cam-follower type for simultaneously operating two valves of a cylinder of an internal combustion engine, said rocker arm comprising a one-piece, cold-formed, metal body having an intermediate portion, a first end portion, and a second end portion, said intermediate portion having two upright side walls and two end walls forming a large upper opening, two flat webs structurally integral with lower portions of said upright side walls and extending outwardly therefrom, straight stiffening flanges extending downwardly from outer edge portions of said webs, said upright side walls having aligned openings, an axle received in said aligned openings, and a roller rotatably mounted on said axle and exposed at said large opening, said first end portion of said body having a flat wall extending outwardly beyond one of said end walls and being functionally integral with said webs, stiffening flanges extending around edges of said flat wall, a central portion of said flat wall having a downwardly-facing recess for engaging an upper end of a lifter post, said second end portion of said rocker arm body having a long narrow web structurally integral with the other of said end walls of said intermediate portion, said second end portion having outwardly-extending projections beyond the ends of said narrow web, and said body having downwardly-facing convex surfaces forming pads near said projections for engaging upper ends of valve stems of the valves.