Cutlery – Cutting tools – Saw
Patent
1979-05-14
1981-01-27
Peters, Jimmy C.
Cutlery
Cutting tools
Saw
B27B 1700
Patent
active
042467012
ABSTRACT:
A safety brake for a power saw comprises mainly a brake element arranged to stop the cutter chain when actuated by an actuating member acted upon by a control handle arranged to be automatically operated when the saw operator is beginning to lose control over the saw, whereby the saw will begin to swing upwards against the operator. The actuating member being arranged to form an angle against said control handle and being formed as an oblong flat structure guided to be movable between an inactive position, occupied when the saw operates normally and to an active position for effecting a brake effect on the cutter chain when the saw begins to move uncontrollable. A spring being arranged to retain the actuating member in inactive position by urging it in engagement with a latch, whereas same spring is adapted to effect a positive movement of the actuating member to its active position when it is unlatched by the manual influence from the control handle.
REFERENCES:
patent: 3739475 (1973-01-01), Moore
patent: 3776331 (1973-12-01), Gustafsson
patent: 3934345 (1976-01-01), Hirschkoff
patent: 3991469 (1976-11-01), Frederickson
patent: 4057900 (1977-11-01), Nagy
patent: 4059895 (1977-11-01), Hirschkoff
patent: 4091896 (1978-05-01), Wieland
patent: 4121339 (1978-10-01), Nikolich
patent: 4197640 (1980-04-01), Murray
Jonsereds AB
Peters Jimmy C.
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