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Title:
LOOP FLUSHING CIRCUIT FOR LUBRICATING ROTARY ELEMENT IN HYDRAULIC PRESSURE TRANSMITTING MODULE
Document Type and Number:
Japanese Patent JP2001132838
Kind Code:
A
Abstract:

To lubricate rotary elements of a hydraulic pressure transmitting module in a simple structure.

This loop flushing circuit includes a three-position/three-port pilot pressure actuating loop flushing valve 40 having an output port 46 for connecting the loop flushing valve 40 to an opening part in an opening casing via a first inlet port 42 connected to pressure lines, 18, 20 of a first system, a second inlet port 44 connected to a pressure line of a second system and a drain line having drain orifices 48, 62, 64 on the inside. A loop flushing line 50 connected to the drain line on the upstream side of the drain orifices extends inside a casing 12, and is almost adjacent to rotary elements in a pump or a motor, and has an opening end part turning to these elements. The three- position valve has an intermediate position. System pressure from at least one of the pressure lines of the first/second systems is always sent to the loop flushing valve regardless of a position of the valve.


Inventors:
STEVEN H GLUCK
BALDUS JEFFREY A
RYKEN JIM D
Application Number:
JP2000000296418
Publication Date:
May 18, 2001
Filing Date:
September 28, 2000
Export Citation:
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Assignee:
SAUER INC
International Classes:
F15B7/10; F16D31/02; F16H39/00; F16H61/40; F16H61/4104; F16N9/04; (IPC1-7): F16H61/40; F16H39/00; F16N9/04
Attorney, Agent or Firm:
竹沢 荘一 (外2名)