Patent ID: 6799666
Filing Date: 2004-10-05
Classification: F16D

Abstract:
A torque limiting coupling, in particular in a driveline for driving agricultural implements, comprising:a longitudinal axis around which the torque limiting coupling is rotatably arranged; a coupling hub including circumferentially distributed apertures; driving members being held parallel relative to the longitudinal axis and being adjustable in the apertures of the coupling hub; a coupling sleeve driving the coupling hub and including first recesses corresponding to the apertures; a switching disk rotatably positioned relative to the coupling hub and being rotatable between a coupling position and an uncoupling position, said switching disk is loaded towards the coupling position by a spring force; an axially acting spring loads the switching disk towards the coupling hub, said switching disk being axially supported against the driving members, said driving members for torque transmitting purposes, engage the first recesses of the coupling sleeve; said switching disk, if a predetermined torque limit is exceeded, can be transferred from the coupling position into the uncoupling position by a rolling movement of the driving members; second recesses in said switching disk corresponding to the apertures and said second recesses being engaged by the driving members in the uncoupling position; locking mechanism being adjustable between a locking position where the switching disk, in its uncoupling position, is locked to prevent the switching disk from being rotated into the coupling position, and a disengaging position; a retainer being adjustable between a retaining position where the locking mechanism is secured in its disengaging position against being displaced into the locking position, and a releasing position; a detent pawl displaceable between a neutral position and a disconnecting position, said detent pawl, in the disconnecting position, cooperates with a radially extending switching face of the switching disk and transfers said switching disk from the coupling position into the uncoupling position, and said detent pawl, in the disconnecting position, cooperates with a radially extending switching face of the retaining means and transfers the retainer from the releasing position into the retaining position.