Pipe joints or couplings – End to side or plate – Swivel with lateral port to annular sleeve
Patent
1995-02-10
1996-12-10
Nicholson, Eric K.
Pipe joints or couplings
End to side or plate
Swivel with lateral port to annular sleeve
285272, 285 98, 285900, 137580, F15B 1304, F16L 27087
Patent
active
055824323
ABSTRACT:
A device for transferring a medium to a servo device has a first component and a second component positioned in the first component so as to be rotatable about an axis of rotation. The first component is displaceable to a limited extent relative to the second component along the axis of rotation. An annular chamber is located between the first and second components and is delimited axially on one side by the first component and on the other side by the second component. First and second radial sealing gaps are provided on opposite sides of the annular chamber. The annular chamber has a circumferential sidewall that is slanted relative to the axis of rotation such that a first surface of the first component forming the circumferential sidewall of the annular chamber and a second surface of the first component forming the radially extending annular surface of the annular chamber are positioned at an acute angle to one another. A pressure chamber communicates with one of the radial sealing gaps for returning the first component into the initial position. A third radial sealing gap is connected to the pressure chamber for relieving it. An inlet line introduces a medium into the annular chamber and an outlet line guides the medium from the annular chamber to the servo device.
REFERENCES:
patent: 3771803 (1973-11-01), Hiestand
patent: 4065159 (1977-12-01), Leroy et al.
patent: 4108294 (1978-08-01), Stewart et al.
patent: 4449738 (1984-05-01), Hotger
patent: 4828292 (1989-05-01), Jansen
patent: 5052724 (1991-10-01), Konrad et al.
patent: 5269345 (1993-12-01), Hiestand et al.
patent: 5348352 (1994-09-01), Ciez et al.
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