EP 0051014 B1 19860205 - DEVICE FOR CONTINUOUSLY CONTROLLING THE STROKE OF A PISTON OF AN ACTUATOR
Title (en)
DEVICE FOR CONTINUOUSLY CONTROLLING THE STROKE OF A PISTON OF AN ACTUATOR
Publication
Application
Priority
FR 8023066 A 19801023
Abstract (en)
[origin: US4426912A] Apparatus for the continuous adjustment of the stroke amplitude of the piston of a jack, the latter having a control member of which at least part is in the form of a rod, which is movable in rotation and in translation and cooperates with the said piston, wherein said rod has an extension in the form of a differential piston which is movable in translation and in rotation within a cylinder and defining also in the latter a chamber with a large cross-section and a chamber with a small cross-section, the latter being permanently connected to a pressurized fluid source, said differential piston having an inner cavity in which is located a second rod immobilized in translation and which can be angularly oriented, said second rod being provided with a cam having two opposite edges which can cyclically uncover and cover, during the rotation of the differential piston, at least two openings respectively connected to the two chambers.
IPC 1-7
IPC 8 full level
B66F 3/26 (2006.01); F15B 9/10 (2006.01); F15B 9/16 (2006.01)
CPC (source: EP KR US)
B66F 3/24 (2013.01 - KR); F15B 9/10 (2013.01 - EP US); F15B 9/16 (2013.01 - EP US)
Citation (examination)
US 2898890 A 19590811 - LYNOTT JOHN J
Designated contracting state (EPC)
DE FR SE
DOCDB simple family (publication)
EP 0051014 A1 19820505; EP 0051014 B1 19860205; AU 543842 B2 19850502; AU 7650881 A 19820429; DE 3173730 D1 19860320; FR 2492909 A1 19820430; FR 2492909 B3 19830916; JP S5798498 A 19820618; KR 830007421 A 19831021; US 4426912 A 19840124; YU 252181 A 19840229
DOCDB simple family (application)
EP 81401613 A 19811015; AU 7650881 A 19811016; DE 3173730 T 19811015; FR 8023066 A 19801023; JP 16940781 A 19811022; KR 810004011 A 19811022; US 31269581 A 19811019; YU 252181 A 19811022