Invention Grant
US08739680B2 Hydraulic pressure feedback for servovalves 有权
伺服阀的液压反馈

  • Patent Title: Hydraulic pressure feedback for servovalves
  • Patent Title (中): 伺服阀的液压反馈
  • Application No.: US12906786
    Application Date: 2010-10-18
  • Publication No.: US08739680B2
    Publication Date: 2014-06-03
  • Inventor: Dennis Reust
  • Applicant: Dennis Reust
  • Agency: Dunlap Codding, PC
  • Main IPC: F15B13/044
  • IPC: F15B13/044
Hydraulic pressure feedback for servovalves
Abstract:
A spool for a servovalve. 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 first 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.
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