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Patent Searching and Data


Title:
PRE- AND POST - COMPENSATIONAL VALVE ARRANGEMENT
Document Type and Number:
WIPO Patent Application WO/2013/049573
Kind Code:
A3
Abstract:
Hydraulic valve arrangements may be assembled to provide pre-compensation or post-compensation using the same chassis body. A first type of main spool (130) is disposed in a main passage and a first type of pressure compensator spool (150) is disposed in a compensator passage to provide pressure pre-compensation. The first type of pressure compensator spool connects to a first pilot location and not to a second pilot location. A second type of main spool is disposed in the main passage and a second type of pressure compensator spool is disposed in the compensator passage to provide pressure post- compensation. The second type of pressure compensator spool connects to the second pilot location and not to the first pilot location. The valve arrangement may be switched from pre-compensation to post-compensation (or vice versa) by switching out the main spool and pressure compensator spool without making any other changes to the chassis body.

Inventors:
JADHAV MAHESH KALLAPPARAO (IN)
IRETON ROBIN FRANCIS (US)
Application Number:
US2012/057923
Publication Date:
June 20, 2013
Filing Date:
September 28, 2012
Export Citation:
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Assignee:
EATON CORP (US)
International Classes:
F15B13/04
Foreign References:
US4519420A1985-05-28
Attorney, Agent or Firm:
BRUESS, Steven, C. (Merchant & Gould P.C, P.O. Box 2903Minneapolis, MN, 55402-0903, US)
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