Dual reciprocating apparatus and saw blades for use therewith

Abstract

The invention relates to a reciprocating saw and one or more blades for cutting material. The reciprocating saw includes a drive system and a gear arrangement that is designed to cause first and second reciprocating saw blades to partially or fully reciprocate in opposite directions. The two reciprocating saw blades can include a tooth configuration that facilitates in maintaining the blades together during the cutting of material.

Description

technical field [0001] This application claims priority to U.S. Provisional Patent Applications Serial Nos. 61 / 529,372, filed August 31, 2011, 61 / 547,092, filed October 14, 2011, and 61 / 560,457, filed November 16, 2011, The contents of these patent applications are hereby incorporated by reference. This application also claims priority to U.S. Patent Application Serial No. 13 / 394,671, filed March 7, 2012, which also claims priority to PCT Application Serial No. PCT / US2012 / 027380, filed March 3, 2012 Priority, the contents of these patent applications are hereby incorporated by reference. [0002] The present invention relates to cutting devices, in particular to power saws, and more particularly to power saws comprising a plurality of saw blades which are movable independently of each other, and more particularly to power saws comprising two saw blades which are simultaneously movable in opposite directions to each other during the cutting of material power saws, and further...

AI Technical Summary

Problems solved by technology

[0005] While this type of cutting device can be used effectively in many applications, there are several disadvantages to using this type of cutting device

One disadvantage is that when the cutting blade moves back and forth during the cutting of material, the reciprocating motion of the cutting blade can cause the material being cut to move back and forth due to the friction and cutting action of the cutting blade

This movement of material during cutting can result in improper cutting of the material and damage to the material

Additionally, when the material to be cut is held in place, reciprocating saws tend to move back and forth during the cut, thereby making it difficult to keep the saw in place and increasing the user's ability to properly hold and adjust the material during cutting. Fatigue of the positioning saw

Also, some cutting operations are better performed with different stroke lengths; however, most reciprocating saws operate with only a single stroke length

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