Cold-formed rocker arm with cam-contacting roller

Details Cold-formed rocker arm with cam-contacting roller Cold-formed rocker arm with cam-contacting roller

1987-09-11

1989-01-10

Smith, Gary L.

Machine element or mechanism

Control lever and linkage systems

Elements

74559, 291564R, 123 9039, 123 9044, 123 9036, F01L 118

Patent

active

047964839

ABSTRACT:
A one-piece, cold-formed rocker arm of the cam follower type is provided. The rocker arm includes a one-piece metal body cold formed from a metal blank and being of U-shaped cross section substantially throughout its length. The body has a bottom wall with upstanding, structurally-integral side walls. An intermediate, convex portion of the bottom wall has a rectangular opening therein extending therethrough. A cam-contacting roller is rotatably mounted on an axle carried by the side walls above the rectangular opening. The roller has a circumferential surface positioned to engage a cam above the rocker arm. The rocker arm body has a downwardly-extending pin with a rounded end to receive a lifter post on which the rocker arm can pivot. The pin is affixed to the bottom wall at one end portion of the rocker arm body. The bottom wall has a shorter convex surface at another end portion with an elongate opening therein to receive an end of a valve stem.

REFERENCES:
patent: 1699657 (1929-01-01), Fagan
patent: 2345822 (1944-04-01), Leake
patent: 2811959 (1957-11-01), Etchells
patent: 2824554 (1958-02-01), Sampietro
patent: 3376860 (1968-04-01), Johnson et al.
patent: 4182290 (1980-01-01), Pohle
patent: 4517935 (1985-05-01), Pomfret
patent: 4614171 (1986-09-01), Malhotra
patent: 4653441 (1987-03-01), Belsanti
patent: 4674453 (1987-06-01), Dove
patent: 4697473 (1987-10-01), Patel

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