Patent ID: 7571720

Claim:
A cutting or sawing machine comprising: a machine body including a power source; a tool assembly including two disc shaped, rotational cutter blades having edge portions which form the working parts of the cutter blades, said edge portions having first, inner sides which face one another, and second, outer sides which define the maximal width of the tool assembly; an elongated tool carrier having a rear end which is connected to the machine body and a front end in which one of the cutter blades is rotationally mounted on each side thereof, thereby at least a major part of the tool carrier is narrower than the width defined by the distance between the outer sides of the cutter blades; a power transmission for rotation of the cutter blades; at least one tool guard belonging to any of the following first and second types, wherein the first type blade guard is a blade guard which is mounted on the tool carrier, adjacent to the tool assembly and is oriented in alignment with the cutter blades and has a width smaller than the distance between said second, outer sides of the edge portions of the cutter blades, and wherein the second type blade guard is a blade guard which is pivotally mounted to the tool carrier or the machine body and rotatable about a turning center adjacent to the rear end of the tool carrier and has a width which is larger than said distance between said second, outer sides of the edge portions of the cutter blades, the second type of blade guard further having a tip portion configured to interact with a working object, thereby the second type blade guard is forced away from the tool assembly when the tool assembly and first type of blade guard and a portion of the tool carrier enter a groove established in a working object after removal of material between two parallel kerfs made by the two rotational cutter blades.