Chain saw safety structure

Details Chain saw safety structure Chain saw safety structure

1988-02-16

1989-06-27

Yost, Frank T.

Cutlery

Cutting tools

Saw

30296R, B27B 1702

Patent

active

048416410

ABSTRACT:
An anti-kickback safety structure comprising both a pivoting guard over the cutting chain and a pivotable, lockable support lever projecting to the rear from the chain saw housing, having a strap and belt for securing the support lever to the forearm of the operator. The support lever automatically provides a counter-torque to restrain a kickback when the cutting chain encounters a knot or other hard object when cutting wood, and also facilitates one-handed support of the chain saw by automatically countering the torque exerted by the weight of the chain saw.

REFERENCES:
patent: 595438 (1897-12-01), Hall
patent: 938105 (1909-10-01), Ziegler
patent: 1497135 (1924-06-01), Cunneen
patent: 3636996 (1972-01-01), Lanz
patent: 3772784 (1973-11-01), Heermann
patent: 3949817 (1976-04-01), Rice
patent: 4060894 (1977-12-01), Hampton
patent: 4447953 (1984-05-01), Lombardino et al.
patent: 4658507 (1987-04-01), Hazen

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