Patent ID: 6393965
Filing Date: 2002-05-28
Classification: B60G,F15B,F16J

Abstract:
A pivot motor, comrprising:a housing surrounding an annular working space closed at its ends; a central motor shaft; radially overlapping housing and shaft vanes, the vanes offset relative to one another in a circumferential direction and delimit working chambers with respect to one another, the working chambers following one another in the circumferential direction and configured to be supplied alternately with a pressure medium, a tip region of the vanes provided with axially continuous grooves; and sealing elements accommodated in the grooves and forming a barrier transversely to an extent of the grooves and including an outwardly expandable sealing frame and an inner sealing insert inserted into a frame interior surrounded by the frame and interacting with frame limbs, the frame subjected to pressure medium by connection of the groove to an adjacent working chamber supplied with fluid; wherein the limbs include an inward-opening U-shaped cross-section, the sealing frame arranged in the groove surrounding in a sealing manner the frame interior in a region of connections of the groove to the adjacent working chambers open into the groove and are delimited with respect to one another by the inner sealing insert, the inner sealing insert engaging an encircling channel formed by the U-shaped cross-section of the limbs as a blocking diaphragm.