Cam follower with roller for use with engine

Details Cam follower with roller for use with engine Cam follower with roller for use with engine

1993-10-18

1995-10-10

Friedman, Carl D.

Machine element or mechanism

Elements

Cams

74559, 123 905, 123 9016, 123 9039, 123 906, F16H 5306, F01L 114

Patent

active

054561361

ABSTRACT:
A cam follower with a roller for use with an engine, the roller adapted for rolling contact with a cam on a camshaft. The roller is formed with minute recesses arranged in random directions so that an RMS(L)/RMS(C) ratio is not more than 1.0 wherein RMS(L) and RMS(C) are surface roughness root mean square values in the axial and circumferential directions, respectively. An SK value, another surface roughness parameter, should be not more than -1.6. This degree of roughness represents a higher surface roughness than prior art cam followers, provides greater oil retention and therefor better lubrication.

REFERENCES:
patent: 2335988 (1943-12-01), Anderson
patent: 2482312 (1949-09-01), Bachle
patent: 3749072 (1973-07-01), Schweikher
patent: 3831457 (1974-08-01), Kern
patent: 4031777 (1977-06-01), Parks
patent: 4359022 (1982-11-01), Nakamura et al.
patent: 4632074 (1986-12-01), Takahashi et al.
patent: 4727832 (1988-03-01), Miyamura et al.
patent: 4856469 (1989-08-01), Okazaki et al.
patent: 4909197 (1990-03-01), Perr
patent: 4987865 (1991-01-01), Schenkel
patent: 5064298 (1991-11-01), Hibi et al.

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