Patent ID: 8707943

Claim:
A method for transmitting, in a saw for cutting hard materials, such as stone and concrete etc., drive force from a drive motor to a cutting member the free ends of which are interconnected for forming an endless unit consisting of cutting element carriers that are supported on a carrying unit, that are connected to cutting elements and that engage a cutting member supporting portion of the saw, in particular a saw guide bar, whereby drive force from the drive motor is transmitted to a transmission assembly supported in the saw and having a drive member included therein, which engages and transmits the drive force to the cutting member through rider members at the carrier units, wherein: at least one clamping member is supported for rotation in the saw; portions of the rider members are successively introduced between the drive member and clamping member/members during operation of the saw; a force is applied between drive member and clamping member for biasing at least portions thereof towards each other and towards said portions of the rider members that are introduced there between; whereby drive force from the drive motor is transmitted to the rider members and thereby to the cutting member through friction drive and thereby with an upper load limit.