Pipe joints or couplings – End to side or plate – Swivel with lateral port to annular sleeve
Patent
1999-04-14
2000-11-14
Nicholson, Eric K.
Pipe joints or couplings
End to side or plate
Swivel with lateral port to annular sleeve
285 13, 285900, 285272, F16L 2708
Patent
active
061458902
ABSTRACT:
In a device (1) for supplying a pressurized medium from a fixed component (2) into a rotating component (3, 3'), with an axially aligned annular groove (14) and radially aligned sealing gaps (15, 16) provided between the two components, a circumferential pressure chamber (29, 30) is worked into each of the end surfaces (21, 22) which limit the radially aligned sealing gaps (15, 16), with radially aligned control slots (37, 38) connecting the pressure chambers (29, 30) to the annular groove (14). Furthermore, the end surfaces (21, 22) which are provided with pressure chambers (29, 30) are configured with equal areas.
This embodiment prevents the two components (2, 3, 3') making contact under pressure and, instead, both components (2, 3, 3') level out in a central position. As a result, trouble free operation is assured over a long period.
REFERENCES:
patent: 3392995 (1968-07-01), Swerdfeger
patent: 4139220 (1979-02-01), Faccou et al.
patent: 4561679 (1985-12-01), Choate
patent: 4828292 (1989-05-01), Jansen
patent: 4925219 (1990-05-01), Pollack et al.
patent: 5269345 (1993-12-01), Hiestand et al.
patent: 5582432 (1996-12-01), Hiestand
patent: 5720503 (1998-02-01), Drijver
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