Andreas Stihl

Other

Robert Boschgmbh

Volker Schurr

Hans Nickel

Klaus Mueller

Klaus Hoppner

Dieter Wieland

Hermann Weiss

Gisbert Kohler

Hydraulic unit for a vehicle brake system

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.

Chain saw having a braking arrangement

A portable motor chain saw with a braking device, for stopping the saw chain during recoil, and with a release, for the braking device, which in the release position is operatively connected with a locking mechanism of the braking device. The release is an inertial mass which is freely movable along an acceleration path, with the kinetic energy of the inertial mass in the release position being greater than the resistance force of the locking mechanism. The release is held in the ready position by at least one holder, preferably a spring which extends between the saw housing and the release.

Portable motor chain saw

Growing community of inventors

Schwieberdingen, Germany

Volker Schurr