Patent · US Expired

Microleaks intercepting apparatus for avoiding and/or signalling oil leakages in hydraulic plants and for equivalent uses

US4658856A · kind A · utility

13Cited by
8References
5Claims
0Family size

Inventor

Key dates

Filing dateJun 4, 1985
Grant dateApr 21, 1987
Priority date—
Expiry dateJun 4, 2005

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10T137/8242
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A unidirectional valve (7) forms a reduced meatus which extends in the direction of the obturator (23) movement, which meatus is to be passed through by possible microleaks in case of losses in the actuator branch (3); a considerable run of the obturator (23) in the presence of microleaks and of consequent pressure losses is thus obtained; a sensor (47) detects the obturator displacements.

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