Patent ID: 8950786
Filing Date: 2015-02-10
Classification: B23Q

Abstract:
1. A coupling device for transferring a medium from a stationary component to a rotating component, comprising: a stationary first ring fixed in place on a stationary part; a second rotatable ring fixed in place on a rotatable part and adapted to rotate along with the rotatable part; a bearing situated between the first ring and the second ring; an annular gap situated between the first ring and the second ring; a supply line situated at the first ring for a supply of the medium into the annular gap; a discharge line situated at the second ring for conveying the medium from the annular gap, the discharge line rotating along with the second ring; an inner sealing element which seals the annular gap at a radially inner side; an outer sealing element which seals the annular gap at a radially outer side; and a compensation unit situated between the stationary ring and the stationary part to align a position of the first ring relative to an axis of rotation, wherein the supply line and the discharge line do not run through an axis of rotation of the rotatable part, wherein the bearing between the first ring and the second ring is an antifriction bearing, the antifriction bearing being a ball bearing having an open cage.