Patent ID: 6178960
Filing Date: 2001-01-30
Classification: B23D,B28D

Abstract:
A hand-held motor-driven saw comprising:a machine housing with a handle,a drive motor having a drive wheel,a saw guide bar which projects out from the machine housing,a loop-guiding sprocket wheel having peripheral notches,a continuous wire loop which carries axially spaced cutting elements thereon, arranged to run around the saw guide bar between said drive wheel in the drive motor and said loop-guiding sprocket wheel at a free end of the saw guide bar,a cutting width of the cutting elements being greater than the width of the saw guide bar and of the guide sprocket wheel, andguide devices on the periphery of the sprocket wheel to maintain the wire loop in plane with the sprocket wheel as the wire loop runs around said sprocket wheel;wherein the cutting elements drop into coacting one of said notches which are provided in the periphery of the sprocket wheel between said guide devices so as to enable the cutting elements to hang freely in those parts of the wire loop that span the notches.