초록 ▼

A vandal-resistant torque sensitive release mechanism is disclosed for coupling and decoupling an actuating handle to a lock mechanism. The torque sensitive release mechanism is disclosed is in the form of a slip-clutch, with the rotational movement of the slip clutch being limited when excessive fo

A vandal-resistant torque sensitive release mechanism is disclosed for coupling and decoupling an actuating handle to a lock mechanism. The torque sensitive release mechanism is disclosed is in the form of a slip-clutch, with the rotational movement of the slip clutch being limited when excessive force is applied to prevent the actuating handle from moving to a position where it would interfere with the subsequent desired opening of the door.

대표청구항 ▼

[ What is claimed is:] [1.] In a vandal-resistant torque sensitive release mechanism for coupling and decoupling an actuating handle to a lock mechanism, including a slip clutch mechanism between the actuating handle and lock mechanism;said slip clutch mechanism including a first member for connecti

[ What is claimed is:] [1.] In a vandal-resistant torque sensitive release mechanism for coupling and decoupling an actuating handle to a lock mechanism, including a slip clutch mechanism between the actuating handle and lock mechanism;said slip clutch mechanism including a first member for connection to an actuating handle and a second member for connection to a lock mechanism;said first member including a first clutch surface and said second member including a second clutch surface;biasing means urging said first and second clutch surfaces together with a first predetermined force such that said first and second members are cooperatively engaged to move in unison to transfer rotational movement of the actuating handle to the lock mechanism upon the application of a force which does not exceed said first predetermined force with the cooperative engagement between said first and second clutch surfaces being defeated upon the application of a force to the actuating handle which exceeds said first predetermined force, such that said first and second clutch surfaces move relative to each other and the actuating handle will be decoupled from the lock mechanism; andlimiting means for limiting the relative movement between said first and second clutch surfaces to a predetermined amount when a force is applied to the actuating handle which exceeds said first predetermined force;the improvement comprising:said limiting means is between said first and second members and presents a blocking force of a second predetermined value for preventing relative movement between said first and second clutch surfaces in excess of said predetermined amount, with said second predetermined force substantially exceeding said first predetermined force.