Double-sided saw blade

#The present invention relates to saw blades used in reciprocal saws, jigsaws, and other such saws.

#Construction workers use electrical saws with removable blades for a variety of uses. A saw such as a reciprocal saw or a jig saw may be used with a variety of blades, depending upon the material being cut. A worker who is cutting a structure such as a roof may encounter several different materials. For example, while cutting a roof, the worker may encounter wood, asphalt shingles and nails. The worker using a saw made to cut wood has to stop cutting, and change to a blade to cut metal in order to cut through the nail without ruining the blade for cutting wood.

#In addition, construction workers frequently must cut materials from awkward positions, and to facilitate cutting, reverse the blade in the saw so that the saw can be used from a different angle. The worker must therefore stop working, remove the blade, reverse the blade, and then reattach the blade to the saw.

#FIG. 1 is a side sectional view of a prior-art saw blade.

#FIG. 2 is a side sectional view of a double-sided saw-blade device in accordance with an embodiment of this invention.

#While only the preferred form of the invention is illustrated in the drawings, it will be apparent that certain modifications could be made without departing what is claimed.

#Referring now to FIG. 1, a prior art saw blade 10 is shown. The prior art saw blade 10 comprises an elongated, substantially flat body 12 having a ½″ universal tang end 14 and a distal tip end 16, and a cutting edge 18. FIG. 2 shows one embodiment of the double-sided saw blade 20 according to the present invention. The blade is for use in a motor-driven reciprocating blade hand saw such as a “Sawzall” manufactured by the Milwaukee Electric Tool Corporation. These types of hand-held reciprocating saws have a reciprocating spindle driven by the motor to which the saw blade is removably attached.

#The double-sided saw blade 20 according to the present invention comprises an elongated, substantially flat body 22 having a ½″ universal tang end 24 and a distal tip end 26, a first longitudinal cutting edge 28 and a spaced apart second longitudinal cutting edge 30. As shown in FIG. 2, the first cutting edge 28 has cutting teeth configured to cut wood, and the second cutting edge 30 has cutting teeth configured to cut metal. The different cutting edges allow a worker to cut two different materials without removing the blade and reinserting a new blade. In the illustrated embodiment, the cutting teeth on the first cutting edge are arranged for cutting a first material, and the slicing teeth on the second cutting edge are arranged for cutting a second material, however, in an alternate embodiment, both cutting edges may have the same configuration of teeth, for example, if a construction worker is cutting only one type of material, but desires to cut it from two directions. It is well known in the prior art to arrange the cutting teeth of a cutting edge of a saw blade according to the material being cut. The teeth may be of different heights, widths, and the teeth may be spaced apart by various distances. According to the present invention, different types of material may be cut using only one blade.