Patent ID: 7669589

Claim:
A concrete saw comprising a frame and a motor on the frame, a cutting blade drive shaft supported on the frame and driven by the motor wherein a cutting blade can be positioned at a front of the saw, first and second front wheels under the motor supporting the frame on a surface to be cut by a cutting blade and configured to raise and lower the front of the saw and a cutting blade relative to the surface, at least one handle supported on the frame at a rear portion of the frame and extending rearward of the frame, a drive assembly for moving the saw in a direction and having first and second powered drive wheels behind the first and second front wheels and rearward of the motor and supporting the frame on the surface, and a powered moving element configured to move the drive assembly about an axis substantially perpendicular to the surface and relative to the frame and to fix the drive assembly in place after being moved by the moving element.