Husqvarna Ab

Björn Rosberg

Par B Martinsson

Lars Andersson

Thomas Engman

Johan Lindblad

Morgan Svensson

A brake assembly () for a hand-held power-driven cutting device () is provided comprising a movably arranged lever (), at least being movable between a first- and a second position, a brake member (), and a brake element () connected to or forming one unit with a rotatable part () of a transmission of the cutting device (), wherein the brake member () is movable between a non-activated position and an activated position, and wherein the brake member () is arranged to engage with the brake element () in the activated position to prevent rotation of the rotatable part (). The brake assembly () further comprising a holding mechanism () arranged to hold the brake member () in the non-activated position when the lever () is in the first position, and a first resilient element () arranged to bias the brake member () towards the activated position, and wherein the brake member () is arranged to be released from the holding mechanism () as a response to the lever () coming into the second position, and wherein when released the brake member () is adapted to be forced towards the activated position by means of the first resilient element (), and wherein the brake member () is arranged to engage with a structure () of the brake element () in said activated position so as to prevent rotation of the brake element ().

Brake assembly for power-driven hand-held cutting device

A chainsaw having a brake arrangement comprising: a kickback brake drum () arranged to rotate together with a drive sprocket driving a saw chain of a chainsaw, a kickback brake for quickly stopping the saw chain if at least one kickback actuator () is actuated, the kick back brake including a kickback brake band () extending around the kickback brake drum () and means for tightening the kickback brake band (-) around the kickback brake drum (), and; a coasting brake weaker than the kickback brake being arranged to brake the saw chain () unless a coasting actuator of the chainsaw is actuated, the coasting brake includes a coasting brake band extending around a coasting brake drum () arranged to rotate together with the drive sprocket (), and means for tightening the coasting brake band () around the coasting brake drum, wherein the coasting brake band is either at least one longitudinally slit portion () of the kickback brake band or a separate brake band.

Growing community of inventors

Jönköping, Sweden

Björn Rosberg