Low friction guide bar for a chain saw

Details Low friction guide bar for a chain saw Low friction guide bar for a chain saw

1993-12-15

1995-12-05

Watts, Douglas D.

Cutlery

Cutting tools

Saw

761041, 76112, B27B 1702

Patent

active

054717515

ABSTRACT:
A guide bar for chain saws comprising a bar body made from a solid steel plate with a groove machined along the edges for guiding a saw chain. At least the portion of the groove sides closest to the edges of the bar body are plated with a first material layer of a thickness related to the average surface roughness (Ra) of the groove sidewalls and thereafter are plated with a much thinner second material layer.

REFERENCES:
patent: Re18908 (1933-08-01), Van Derhoef
patent: 2962812 (1960-12-01), Gommel
patent: 3124177 (1964-03-01), Ekrud
patent: 3726326 (1973-04-01), Coleman
patent: 3744363 (1973-07-01), Espana
patent: 3991799 (1976-11-01), Albright
patent: 4641432 (1987-02-01), Kume
patent: 4722141 (1988-02-01), Lim et al.
patent: 4958670 (1990-09-01), Johnson
patent: 4970789 (1990-11-01), Bell
patent: 5052109 (1991-10-01), Vanderzanden et al.
patent: 5144867 (1992-09-01), Yajima et al.

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