Length compensation device for quick-change chucks

Claim 1

IN A QUICK-CHANGE CHUCK HAVING A SHAFT AND AN AXIAL BORE WITHIN SAID SHAFT, A TOOL SOCKET FOR RECEIVING THE SHAFT OF A REDUCTION CONE OR TOOL HAVING AN ANNULAR GROOVE, SAID TOOL SOCKET HAVING RADIAL BORES, LOCKING MEMBERS WITHIN SAID RADIAL BORES ADAPTED TO ENGAGE INTO SAID ANNULAR GROOVE, A LOCKING SLEEVE RIGIDLY SECURED TO SAID CHUCK SHAFT AND SLIDABLE IN THE AXIAL DIRECTION RELATIVE TO SAID TOOL SOCKET FOR MAINTAINING SAID LOCKING MEMBERS IN THE ENGAGING POSITION, MEANS FOR CONNECTING SAID TOOL SOCKET TO SAID CHUCK SHAFT COMPRISING A COMPENSATING SPRING WITHIN SAID AXIAL BORE OF SAID CHUCK SHAFT, SAID TOOL SOCKET BEING SLIDABLE IN THE AXIAL DIRECTION WITHIN SAID CHUCK SHAFT AGAINST THE ACTION OF SAID COMPENSATING SPRING, SAID LOCKING SLEEVE AND SAID TOOL SOCKET HAVING AXIALLY EXTENDING GROOVES IN THE ADJACENT WALL SURFACES THEREOF, DRIVING ELEMENTS DISPOSED WITHIN SAID AXIAL GROOVES AND CONNECTING SAID LOCKING SLEEVE WITH SAID TOOL SOCKET FOR TRANSMITTING ROTARY MOVEMENTS FROM SAID LOCKING SLEEVE TO SAID TOOL SOCKET, AND A BOLT PASSING THROUGH SAID AXIAL BORE OF SAID CHUCK SHAFT AND CONNECTING SAID TOOL SOCKET TO SAID COMPENSATING SPRING.