TWIN UNIVERSAL JOINT Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: pivot has two outer jaws and centering unit provided with two inner jaws and interposed between them. Each inner jaw is coupled with corresponding outer jaw through a spider. The centering unit is provided with cross-pieces and spherical pin and sleeve provided with spherical hollow answered to the pin. Lubricating system has axial passages provided in the spider, central openings in spiders, axial passages in cross-pieces and axial passages in flexible hoses. One of the ends of each flexible hose is received in central opening of the spider and the other end in spherical pin or sleeve. The central opening of the spider can be provided with a thread. End part of the flexible hose can be made of a threaded tip and screwed in central threaded opening of the spider. The end part of the flexible hose can be made of a cylindrical tip and screwed in central threaded opening of the spider. The flexible hose is received in axial passage of the cross-piece in a spaced relation with it to compensate lubricant pressure. EFFECT: improved design. 6 cl, 4 dwg