Patent ID: 7179035

Claim:
A locking nut comprising an internal thread adapted to be screwed up on a thread of a shaft, the locking nut comprising at least one locking element and at least one locking screw, the at least one locking element having a locking part adapted to be pressed against the thread of the shaft by the at least one locking screw to lock the nut against unintentional unlocking, the at least one locking element being provided with a releasing means for subjecting the at least one locking element to a radial pulling force causing the at least one locking element to be lifted from engagement with the shaft thread after loosening of the at least one locking screw; wherein the releasing means comprises at least one release screw arranged to be in threaded engagement with the at least one locking element; wherein the at least one locking element is positioned in an inner recess in an inner peripheral surface of the locking nut, and the at least one locking screw and the at least one release screw extend through respective radial bores in the locking nut which are positioned to coincide with the inner recess of the locking nut; and wherein the at least one release screw extends through a smooth radial bore in the locking nut and is in threaded engagement with the at least one locking element by way of a threaded bore in the at least one locking element, the threaded bore in the at least one locking element coinciding in position and direction with the smooth radial bore in the locking nut, the smooth radial bore in the locking nut comprising means for limiting the distance the at least one release screw can be screwed into the radial bore in the locking nut.