Reciprocating Saw with Reinforced Offset Saw Blade Holder

摘要

An improved offset saw blade mounting assembly for use on a reciprocating power saw tool includes a shim member that is used to fill a central slot of the tool drive shaft. The shim member fills the slot and serves to reinforce the drive shaft and thereby reduce the likelihood of the drive shaft failing. The shim member may be a separate piece, or formed as part of a separate tubular insert, or integrally formed with the mounting block of the offset mounting assembly. A finger guard is also provided that substantially closes off any opening which may occur between the mounting assembly and the power tool.

主权项

1. A reciprocating saw, comprising:
a body, a drive shaft mounted within the body for reciprocating movement along a first axis, the drive shaft including a free end extending out of said body and past a front end portion thereof, the drive shaft free end including a slot extending axially rearwardly therein and defining two shaft halves separated the slot, a saw blade mounting block, the mounting block having a body portion disposed over said drive shaft, the mounting block body portion including an axial bore configured to receive at least a portion of said drive shaft therein, said mounting block further including a saw blade support portion spaced apart from said mounting block body portion and configured to support a saw blade along a second axis spaced apart from the first axis, said mounting block body portion further including a retainer for retaining said mounting block in place on said drive shaft, and a shim member interposed in said drive shaft slot, said shim member extending sufficiently in said slot in order to reduce the likelihood of damage to said drive shaft during operation of said saw.