Patent ID: 8327550
Filing Date: 2012-12-11
Classification: B23D,Y10T

Abstract:
1. A clamp assembly for removably mounting a working member of a reciprocating tool to a reciprocating output shaft, the reciprocating output shaft reciprocating along an axis of reciprocation, the working member including a pair of opposing indents along a longitudinal axis thereof and a pair of opposing protrusions along the longitudinal axis, one of the protrusions adjacent to each of the indents, the assembly comprising: a body member adapted to be mounted to the output shaft; at least one engaging member having a first engaging portion and a second engaging portion, each respective engaging portion adapted to be received in each of the indents, wherein the engaging member is pivotable in use relative to the body member between a first position, in which the pair of engaging portions are disposed proximate the axis of reciprocation and engage the pair of indents to retain the working member in position on the output shaft, and a second position in which the engaging portions are spaced away from the axis of reciprocation relative to the first position and the working member is removable from the output shaft; and a first biasing member for urging the engaging member towards the first position; and wherein, when the engaging member is in the first position, upon application of a force to the working member tending to remove the working member from the body member, the engaging member prevents movement of the working member by the pair of engaging portions engaging the pair of protrusions; and wherein the first engaging portion and the second engaging portion are interconnected so as to permit limited relative rotational movement therebetween as they pivot from the second position to the first position; and wherein one of the first and second engaging portions includes a protrusion and the other of the first and second engaging portions includes a corresponding recess for receiving the protrusion, wherein the recess permits limited pivotal movement of the protrusion therein.