Abstract: The invention is directed to a guide bar for portable motor-driven chain saws. The guide bar includes two steel side parts and a center part connected to the side parts. The weight of the guide bar is kept optimally low while at the same time providing adequate stability and the longest possible service life by providing cutouts extending in the longitudinal direction which are provided with a filler of a material having a lower specific gravity. The cutouts of the side parts and the cutout in the center part filled likewise with a lighter material are arranged so as to not coincide with each other when the guide bar is assembled. In this way, a form-tight mounting for the filler is formed in the side parts and in the center part.

Abstract: The invention is directed to a guide bar for guiding the saw chain of a motor-driven chain saw. The guide bar of the invention has a lamellar configuration and is not made of three parts as are conventional guide bars. Instead, the guide bar of the invention is made of two side parts. The two side parts are connected by means of spacers which are configured as projections on at least one of the two side parts. The side parts can be frames having large inner openings and are preferably stiffened. The connected frames define a composite frame which can be filled with plastic. The spacers determine the spacing of the side parts and therefore the width of the guide groove for the saw chain. The invention is also directed to a method of making the guide bar.

Abstract: A guide bar for a motor-driven chain saw is disclosed wherein the guide bar is provided with a center cutout extending in the longitudinal direction of the bar which is filled out with a bonded fiber material made of plastic and reinforced with long fibers. The guide bar reduces the weight and facilitates manipulation of the chain saw equipped therewith while at the same time providing a high strength and the capacity to take up bending and torsion loads.