type of shaft coupling that allows one shaft to drive the other, even if the two shafts are not in perfect alignment, a shaft coupling capable of transmitting rotation from one shaft to another not collinear with it, a device consisting of two forks connected 90° apart by a cross-shaped member on which the forks can pivot, device, usually of the modified Hooke's type, which allows rotary drive to be transmitted through an angle, mehhanism pöörlemise ülekandmiseks muutuva nurga all lõikuvate võllide vahel. Jäik u. (ka ristliigend) koosneb võllide otsa kinnitatud kahvlitest ja nendega nelja laagri abil ühendatud ristmikust Elas