Rocker arm

Details Rocker arm Rocker arm

F - Mech Eng,Light,Heat,Weapons

01

L

F01L 1/18 (2006.01)

Patent

CA 2043023

A one-piece, cold-formed rocker arm 10 of the cam-follower type includes a one-piece metal body 36 which is cold-formed from a metal blank and is of U-shaped cross section at first and second end portions 38, 40. The first end 38 of said body 36 has a bottom wall 44 and two upwardly-extending side walls 46, 48 with a rounded recess 50 in the bottom wall 44 having a concave side facing downwardly for receiving an end of a lifter post 12 on which the rocker arm 10 can pivot. The second end 40 of the body 36 has a groove 54 formed by a bottom wall 56 with two downwardly-extending side walls 58, 60 and two doubled-back, upwardly-extending side walls 62, 64 which are structurally integral at lower edges with lower edges of the downwardly-extending side walls 58, 60. The groove 54 of the second end portion 40 faces downwardly to receive an upper end of a valve stem 16. An intermediate portion 42 of the body 36 has two substantially parallel side walls 66, 68 which are structurally integral with the upwardly-extending side walls 46, 48 and 62, 64 of the first and second end portions 38, 40. The intermediate portion 42 of the body 36 is open between the parallel side walls &6, 68 and between the bottom walls 44, 56 of the first and second portions 38, 40. The parallel side walls 66, 68 carry an axle 76 on which a roller 78 is rotatably mounted for engaging an overhead cam 22.

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