Title:
HYDRAULIC PRESSURE FEEDBACK FOR SERVOVALVES
Document Type and Number:
WIPO Patent Application WO/2011/047375
Kind Code:
A3
Abstract:
A spool for a servo valve. The spool includes a first end land and a second end land. The spool includes an intermediate land having a first side and a second side opposite the first side. The intermediate land is positioned between the first end land and the second end land in a spaced-apart, axially aligned relationship such that a first annular space is defined between the first end land and the first side of the intermediate land and a second annular space is defined between the second end land and the second side of the intermediate land. The intermediate land further includes at least one fluid passageway formed in and extending through the intermediate land from the fist side to the second side to establish fluid communication between the first annular space and the second annular space to provide a fluid pressure feedback between the first and second annular spaces.
Inventors:
REUST DENNIS (US)
Application Number:
PCT/US2010/053045
Publication Date:
August 18, 2011
Filing Date:
October 18, 2010
Export Citation:
Assignee:
REUST DENNIS (US)
International Classes:
F15B13/044; F15B13/02; F16K11/07
Foreign References:
| KR100430052B1 | 2004-05-04 | |||
| KR20020034473A | 2002-05-09 | |||
| JP2001012409A | 2001-01-16 | |||
| KR100870726B1 | 2008-11-27 | |||
| US5128908A | 1992-07-07 |
Attorney, Agent or Firm:
MAXEY, Joseph, D. (P.C.P.O. Box 1637, Oklahoma City OK, US)
Download PDF:
Previous Patent: METHODS OF TREATING TAUOPATHIES
Next Patent: MODULAR ELECTROMAGNETICALLY SHIELDED ENCLOSURE
Next Patent: MODULAR ELECTROMAGNETICALLY SHIELDED ENCLOSURE