Device for maintaining a required pressure in a hydrostatic...

Details Device for maintaining a required pressure in a hydrostatic... Device for maintaining a required pressure in a hydrostatic...

F - Mech Eng,Light,Heat,Weapons

16

C

308/1.4

F16C 32/06 (2006.01)

Patent

CA 1094620

A B S T R A C T A liquid supply system for a hydrostatic bearing is provided with an accumulator for maintaining a required liquid pressure in the bearing during its slow-down at times of pump failure. The accumulator has a movable piston and a pressurized gas system for maintaining a sufficient liquid pressure in the accumulator. A portion of the pressure liquid for the bearing is led through a pressure generating member, such as a metering unit, which provides liquid under a pressure higher than the maximum liquid pressure in the bearing. The accumulator communicates with this higher pressure liquid. A part of the higher pressure liquid flows to the bearing via a constant flow valve which is in fluid communication with the accumulator. A return condiit in fluid communication with the accumulator has a one-way valve leading to a lower pressure position. The one-way valve opens when the liquid pressure upstream corresponds to the higher pressure so that the remainder of the portion of the pressure liquid flows to the lower pressure position.

310420

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