Patent ID: 7540223

Claim:
A combination comprising a riving knife and a device for mounting the riving knife to a table saw, wherein the riving knife comprises: a slot having a first width and extending in a mounting direction; and a lock hole defining a part of the slot and having a first diameter that is larger than the first width; wherein the mounting device comprises: a manually operable lock member movable between a lock position and an unlock position in order to lock and unlock at least a part of the riving knife; and a biasing member arranged and constructed to normally bias the lock member toward the lock position; and a mount member defining a mount recess for receiving at least a part of the riving knife; wherein the lock member comprises a lock pin supported by the mount member, so that the lock pin can move in an axial direction; wherein the lock pin includes a first portion, a second portion and a tapered part; wherein the first portion has a diameter smaller than the first width of the riving knife; wherein the second portion is positioned on the side opposite to the first portion; wherein the tapered part is positioned between the first and second portions and is engageable with the lock hole when the lock pin is in the lock position; wherein the tapered part has a first end and a second end positioned on the side of the first portion and the second portion, respectively, wherein the first end has a diameter larger than the diameter of the first portion and defines a stepped end; and wherein the stepped end of the tapered part is opposed to a surface of the mount recess and is held in contact with the surface of the mount recess by the biasing member when the riving knife is not inserted into the mount recess.