Patent ID: 6814340
Filing Date: 2004-11-09
Classification: F16L,Y10T

Abstract:
A hydraulic coupling arrangement, comprising:a pair of coupling components having flat faces bearing against each other during coupling, one of the components extending along a longitudinal axis and having a flow channel through which a pressurized fluid flows to the other of the components during coupling, said one component including: a) an outer, tubular sleeve having a discharge passage, b) an end piece at an axial end region of the sleeve and connected to a supply of the pressurized fluid, c) a displaceable member axially bearing against the other component during coupling, d) a first movable member axially movable by the displaceable member during coupling, e) a valve body connected to the first movable member for joint movement therewith, f) a bypass passage extending through the first movable member between the flow channel and the discharge passage, g) a radially offset valve mounted in the valve body within the bypass passage for movement along an offset axis parallel to the longitudinal axis between a closed position in which the valve blocks the flow of the fluid to the discharge passage, and an open position in which the valve enables the fluid to flow to the discharge passage during coupling, and h) a spring located remotely from the flow channel between the displaceable member and the first movable member, for restoring the displaceable member to its initial position upon uncoupling of the components, and for axially urging the valve body away from the displaceable member toward the outer sleeve.