Chain saw having a braking arrangement

Details Chain saw having a braking arrangement Chain saw having a braking arrangement

1987-05-04

1988-06-28

Kazenske, E. R.

Cutlery

Cutting tools

Saw

30381, 83DIG1, 188 77R, B27B 1702

Patent

active

047530120

ABSTRACT:
A braking arrangement for a motor-driven chain saw is disclosed. The braking arrangement is actuable by a releasing device and is held in the release position against a spring force by means of a latching device. The braking arrangement includes a brake band holding member to which a brake band is fastened. The brake band can be tightened around a clutch drum of the motor-driven chain saw by means of an ancillary chain brake device provided in addition to the chain brake device, so that the clutch drum is brought to an immediate stop. This braking action occurs also if the releasing device of the chain brake device is not actuated. In this way, the chain brake device remains activated thereby enabling it to act during operation of the chain saw, for example, in the event that the motor-driven chain saw kicks back while the saw chain is running. The ancillary chain brake device is preferably operable by the throttle lever or the throttle lever locking device so that the clutch drum is braked on throttling back. In this way, a continued running of the saw chain after release of the throttle is thereby reliably prevented.

REFERENCES:
patent: 3785230 (1974-01-01), Lokey
patent: 4152833 (1979-05-01), Phillips
patent: 4402138 (1983-09-01), Glockle et al.
patent: 4432139 (1984-02-01), Kohler et al.
patent: 4573556 (1986-03-01), Andreasson
patent: 4683660 (1987-08-01), Schurr

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