Quick-coupling device
First Claim
Patent Images
1. A quick-coupling comprising first and second parts which can be coupled together, said first part comprising:
- a frame;
a valve body arranged in said frame to be longitudinally displaceable with respect to said frame;
an inner sleeve arranged in said frame to be longitudinally displaceable with respect to both said frame and said valve body;
a bearing unit arranged in said frame, said bearing unit projecting inwards from said inner sleeve and supporting said valve body so that said valve body is substantially centered in said frame, said bearing unit having at least one hole which allows working medium to flow through;
a seat arranged in said frame behind said inner sleeve;
a rear seal arranged in said seat; and
a first pressure eliminator arranged in said frame behind said inner sleeve.
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Accused Products
Abstract
A quick coupling includes a frame and a valve body which is arranged to be longitudinally displaceable in the frame. An inner sleeve is arranged in the frame to be displaceable relative to both the frame and the valve body. The valve body is centered in the frame with the aid of the bearing unit projecting inwards from the sleeve. The bearing unit is provided with one or more cavities or holes allowing working media to flow through. A rear seal is provided in a seat arranged behind the inner sleeve. A pressure eliminator is also provided behind the inner sleeve.
34 Citations
11 Claims
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1. A quick-coupling comprising first and second parts which can be coupled together, said first part comprising:
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a frame; a valve body arranged in said frame to be longitudinally displaceable with respect to said frame; an inner sleeve arranged in said frame to be longitudinally displaceable with respect to both said frame and said valve body; a bearing unit arranged in said frame, said bearing unit projecting inwards from said inner sleeve and supporting said valve body so that said valve body is substantially centered in said frame, said bearing unit having at least one hole which allows working medium to flow through; a seat arranged in said frame behind said inner sleeve; a rear seal arranged in said seat; and a first pressure eliminator arranged in said frame behind said inner sleeve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A quick-coupling comprising first and second parts which can be coupled together, said first part comprising:
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a first frame; a first valve body arranged in said first frame to be longitudinally displaceable with respect to said first frame; an inner sleeve arranged in said first frame to be longitudinally displaceable with respect to said first frame and said first valve body; a bearing unit in said first frame, said bearing unit projecting inwards from said inner sleeve and supporting said first valve body so that said first valve body is substantially centered in said first frame, said bearing unit having at least one hole which allows working medium to flow through; said second part comprising; a second frame; a second valve body arranged in said second frame to be longitudinally displaceable with respect to said second frame, said second valve body cooperating with said first valve body during coupling of said first and second parts; a central unit arranged in said second frame to be longitudinally displaceable with respect to said second frame, said central unit defining a second space therein and a first space between said central unit and said second frame, a second valve unit being displaceable into said second space whereby the displacement of said second valve body is not dependent on a pressure of the working medium is said first space. - View Dependent Claims (10)
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11. A quick-coupling comprising first and second parts which can be coupled together, said first part comprising:
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a frame; a valve body arranged in said frame to be longitudinally displaceable with respect to said frame; an inner sleeve arranged in said frame to be longitudinally displaceable with respect to said frame and said valve body; said inner sleeve having a bearing portion projecting inward from said inner sleeve and supporting said valve body so that said valve body is substantially centered in said frame, said bearing portion having a plurality of holes around its circumference which allow working medium to flow through; a first spring acting on said inner sleeve to hold said inner sleeve in a starting position; a second spring acting on said bearing portion, said second spring being arranged behind said bearing portion.
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Specification