Dual high pressure rotary union for mechanical power press

Details Dual high pressure rotary union for mechanical power press Dual high pressure rotary union for mechanical power press

2005-03-08

2005-03-08

Ostrager, Allen (Department: 3725)

Presses

Reciprocating press construction

With mechanical force multiplier

C100S299000, C184S006140, C285S120100

Reexamination Certificate

active

06862983

ABSTRACT:
A fluid delivery system supplies two or more fluids to a rotatable shaft integrated within a device such as a mechanical press and develops damped clearance spaces at the bearing surfaces of the fluid coupling device. In one arrangement, a rotary union is adapted for driving rotation by the shaft and provides two fluid pathways disposed in flow communication with a fluid access channel formed in the shaft. Bearing support is provided by an oil film present within a clearance space defined between the rotary union and a stationary housing disposed thereabout. In another arrangement, a stationary fluid transfer device is adapted for non-rotation and disposed within a crankshaft cavity to define a clearance space there between. A fluid pathway formed therein communicates fluid to the crankshaft access channel. Bearing support is provided by an oil film present in the clearance space. There are no sliding face seals in the arrangements.

REFERENCES:
patent: 4375785 (1983-03-01), Schoch et al.
patent: 5022686 (1991-06-01), Heel et al.
patent: 5901643 (1999-05-01), Bornhorst
patent: 6109659 (2000-08-01), Heidenreich et al.
patent: 6494116 (2002-12-01), Horie

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