Patent ID: 6748829
Filing Date: 2004-06-15
Classification: B25B

Abstract:
A pliers operable to grasp a workpiece between an upper jaw and a lower jaw, comprising:an upper arm having the upper jaw; a lower arm, the lower jaw being linked to the lower arm but not integral with the lower arm; a control arm having a first end and a second end, the first end of the control arm having a first pivotable connection to the upper arm adjacent to an end of the upper arm remote from the upper jaw, and the second end of the control arm having a second pivotable connection to the lower arm at an intermediate location along the length of the lower arm; a spring biasing the control arm so as to resist rotation of the control arm about the first pivotable connection; a support extending downwardly from the upper arm toward the lower arm; an engagement mechanism operable to controllably engage the lower jaw to the downwardly extending support responsive to a movement of the lower arm; and a shifter that is pivotable about three points, wherein the shifter transmits a locking and engaging force applied through the arms to the engagement mechanism.