NUT WITH AUTOMATIC RIGID LOCKING FOR SCREWING ON SHAFT WITH GEAR THREAD Russian patent published in 1997 - IPC

FIELD: mechanical engineering. SUBSTANCE: nut has stop member whose inner side is provided with fine cogs allowing the nut to be locked when it rotates about the shaft. The stop member is received in the opening for permitting movement in axial direction between the first locking position and second loosening position. The stop member is made up as sectors provided with fine cogs interconnected through a flexible ring. The sectors of the stop member have projections on their outer sides. The projections are received in the slots in the nut to allow the stop member to interact with the nut housing. The stop member keeps inside the ring groove in the housing of the nut by a ring cramp. EFFECT: enhanced reliability. 9 cl, 31 dwg