Patent · US Expired

Pressure equalization valve for a hydraulic system

US5165653A · kind A · utility

6Cited by
5References
15Claims
0Family size

Assignee

Inventor

Key dates

Filing dateAug 22, 1991
Grant dateNov 24, 1992
Priority date
Expiry dateAug 22, 2011

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T137/86622
  • WIPO fieldMechanical elements
  • WIPO sectorMechanical engineering

Abstract

A system in which movement of a first member from a first position to a second position is translated through fluid in a fluid chamber to movement of a second member from a first position to a second position, the system having a pressure equalization line in communication with the fluid chamber allowing fluid to flow into the chamber when the second member is at its first position and out of the chamber when the second member nears the first position when returning from its second position towards its first position.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.