Hydrostatically balanced rotary hydraulic connector

Details Hydrostatically balanced rotary hydraulic connector Hydrostatically balanced rotary hydraulic connector

1990-05-18

1991-11-26

Cuomo, Peter M.

Pipe joints or couplings

Swivel

Pipe in socket type

285 11, 285276, 285280, 285 98, 285 94, 285 14, 277 5, 384111, 384118, F16L 2700, F01B 900, F04B 100

Patent

active

050677535

ABSTRACT:
The fluid-tight coupling is designed for connecting a fixed hydraulic line with a rotary hydraulic line. The fixed line (1) carries on its end an axially movable tubular piston (7) provided with a hemispherical head (8); the rotary line (2) has an offset end portion (15), the axis (Y) of which is eccentric with respect to the axes (X) and (Z) of the pipes (1) and (2), this end portion (15) being also provided with a hemispherical head (16); between the two hemispherical heads (8, 16) is interposed a wobbling rotary core piece (17) formed with a central orifice (18) and with two opposed concave conical bearing surfaces for fluid-tight engagement with both hemispherical heads (8, 16) respectively. In a preferred embodiment, the axial thrust exerted on the hemispherical head (16) corresponding to the rotary pipe (2) is supported by a hydrostatic bearing (24, 25) and the rotary pipe (2) is also supported by a hydrostatic bearing (22).

REFERENCES:
patent: 4792164 (1988-12-01), Suemitsu

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