EP 0147256 B1 19880107 - CONTINUOUS AND INTERMITTENT FEED OF HYDRAULIC FLUID TO A RAM
Title (en)
CONTINUOUS AND INTERMITTENT FEED OF HYDRAULIC FLUID TO A RAM
Publication
Application
Priority
FR 8317382 A 19831102
Abstract (en)
[origin: US4590763A] A method of supplying a normally continuous operating hydraulic actuator with hydraulic fluid, continuously and by controlled pulse, comprising the steps of supplying a chamber of an actuator and, simultaneously, storing an hydraulic energy in an accumulator from a pressurized fluid source, as long as the pressure in the chamber remains less than a chosen value, isolating the accumulator from the source when the pressure in the chamber reaches a chosen value, connecting the chamber to a reservoir, then isolating the chamber from the reservoir, then causing the accumulator to communicate with the chamber, isolating the chamber from the accumulator and re-establishing the communication between the source, on the one hand, and the chamber and the accumulator, on the other, and maintaining them in this state as long as the pressure in the chamber does not again reach said chosen value.
IPC 1-7
IPC 8 full level
E02F 9/22 (2006.01); A01B 63/00 (2006.01); A01B 63/10 (2006.01); F15B 1/02 (2006.01); F15B 11/02 (2006.01); F15B 21/12 (2006.01)
CPC (source: EP US)
F15B 1/02 (2013.01 - EP US); F15B 21/12 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE GB IT LI LU NL SE
DOCDB simple family (publication)
US 4590763 A 19860527; AT E31786 T1 19880115; CA 1246497 A 19881213; DE 3468491 D1 19880211; EP 0147256 A1 19850703; EP 0147256 B1 19880107; ES 537627 A0 19860101; ES 8603218 A1 19860101; FR 2554179 A1 19850503; FR 2554179 B1 19860103; JP H0381011 B2 19911226; JP S60172706 A 19850906
DOCDB simple family (application)
US 66682484 A 19841031; AT 84402194 T 19841031; CA 466720 A 19841031; DE 3468491 T 19841031; EP 84402194 A 19841031; ES 537627 A 19841031; FR 8317382 A 19831102; JP 22904784 A 19841101