device foer to counteract hastighetsskillnader between two roterbart arranged axes

摘要

PCT No. PCT/SE88/00355 Sec. 371 Date Dec. 6, 1989 Sec. 102(e) Date Dec. 6, 1989 PCT Filed Jun. 27, 1988 PCT Pub. No. WO88/10378 PCT Pub. Date Dec. 29, 1988.A device to oppose a difference in relative rotational velocity between two rotatable shafts includes a set of primary braking elements arranged to rotate with one of the shafts and a set of secondary braking elements arranged to rotate with the other shaft, whereby both sets of braking elements are moved into engagement with one another from a free running position in order to oppose the difference in rotational velocity between the two shafts. One of the shafts carries a rotatable unit having a circular surface which is slightly displaced from a 90 degree angle from the drive shafts. This unit is connected for rotation with one set of the braking elements and is movable sideways relative to the other set of braking elements connected to the other shaft. The rotatable unit contains a set of movable pistons which engage the angled surface in such a way that when an angular displacement takes place between the pistons and the angled surface, at least one of the pistons is pushed inwardly against the pressure in the fluid system.