Patent ID: 6658744
Filing Date: 2003-12-09
Classification: B23D

Abstract:
A protection lid to facilitate replacing saw blade of a pneumatic saw, and said pneumatic saw having a body, of which front end having a fixed member with a recess portion; a chuck cylinder furnished in said recess portion for mounting a saw blade; other end of said chuck cylinder connected with a transmission shaft, and said fixed member furnished with a protection lid having features as follows:said protection lid furnished with a recess portion corresponding to said fixed member; side plates on both sides of said protection lid being in contact with edges of said fixed member; both side plates of said protection lid furnished with two elongate holes respectively, and position of said two elongate holes being designed at a position within a stroke distance of a fastening screw of said chuck cylinder upon moving back and forth; said elongate holes being designed to receive a hexagon wrench for reaching said fastening screw on said chuck cylinder so as to facilitate replacing said saw blade.