Clamping mechanism

摘要

A clamping mechanism for clamping a plate (20) to a base (18) comprises an arm (30) having a clamp head (32) on one end and a sleeve (26) slidably receiving the arm. The sleeve is mounted for rotation on an axis perpendicular to the arm. A drive (70, 60, 44) is provided to rotate the sleeve from a first position to a second position in which the arm is disposed with its head in position to clamp the plate to the base and to slide the arm through the sleeve when the sleeve is in the second position to draw the head tightly against the plate and clamp it to the base. $$