Rotary connection for passage of hydraulic oil

Details Rotary connection for passage of hydraulic oil Rotary connection for passage of hydraulic oil

1978-07-21

1981-02-24

Cline, William R.

Fluid handling

Systems

With running joint between movable parts of system

F16K 3900

Patent

active

042521475

ABSTRACT:
Rotary connection having a housing which is provided with annular ducts and with feed bores for pressurized oil and non-pressurized oil and having a piston-shaped inner part arranged in the housing, the inner part being formed with bores and with grooves on its periphery, for the passage of high-pressure oil and practically non-pressurized hydraulic oil. By means of a valve piston which can be acted-on at both end surfaces thereof with pressurized oil, lubricating ducts are connected, depending upon the switched position of the valve piston, via a central longitudinal bore provided with transverse bores, with the respective annular duct which at the time is not applied with pressurized oil.

REFERENCES:
patent: 3908695 (1975-09-01), Dunbar
patent: 3923133 (1975-12-01), Chivari
patent: 4168654 (1979-09-01), Wilson

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