Safety device for chain saws

Details Safety device for chain saws Safety device for chain saws

1989-08-28

1990-10-02

Yost, Frank T.

Cutlery

Cutting tools

Saw

123198D, B23D 5702

Patent

active

049599062

ABSTRACT:
A safety device for use on chain saws to prevent one-handed operation of the saw. A swingable bar structure is carried on the saw housing to connect with an engine carburetor throttle arm. Before the engine can develop sufficient power to move the cutter chain the user must manually draw the bar structure to a specific position alongside a hand grip structure on the saw housing. One of the user's hands will engage the safety device bar structure; the other hand will operate a trigger mechanism. Both hands must be used before the cutter chain can begin to move.

REFERENCES:
patent: 3361165 (1968-01-01), Irgens
patent: 3844360 (1974-10-01), Green
patent: 4028804 (1977-06-01), Hammond
patent: 4753012 (1988-06-01), Schurr

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