EP 1288507 B1 20060118 - Low-loss drive system for a hydraulic actuator
Title (en)
Low-loss drive system for a hydraulic actuator
Title (de)
Verlustarmer Antrieb für einen hydraulischen Aktuator
Title (fr)
Systeme d'entrainement a faible perte pour un actuateur hydraulique
Publication
Application
Priority
- DE 19600650 A 19960110
- DE 19642163 A 19961012
- EP 96944055 A 19961221
Abstract (en)
[origin: DE19600650A1] The hydraulic fluid is supplied by a first bidirectional pump (15), in parallel with which a second pump (15') also rotates at a controlled speed. Each pump supplies a separate inlet (61.1. or 61.2) of a preferably four-position valve arrangement (59) whose outlets (63.1,63.1' etc.) supply separate double-acting piston actuators (1.1-1.3) and a hydraulic motor (1.4). The pumps are driven by separate motors (19,19') subject to a common control unit (57) containing a driver and processing circuit for each actuator, which has a sensor (39) optionally incorporating a digitiser for signalling the position, speed and/or acceleration of the piston (5) or piston rod (7).
IPC 8 full level
F15B 7/00 (2006.01); F15B 11/08 (2006.01); F15B 11/17 (2006.01); F15B 21/14 (2006.01)
CPC (source: EP)
F15B 11/08 (2013.01); F15B 11/17 (2013.01); F15B 2211/20515 (2013.01); F15B 2211/20561 (2013.01); F15B 2211/20569 (2013.01); F15B 2211/20576 (2013.01); F15B 2211/2658 (2013.01); F15B 2211/27 (2013.01); F15B 2211/30585 (2013.01); F15B 2211/6303 (2013.01); F15B 2211/6336 (2013.01); F15B 2211/6651 (2013.01); F15B 2211/6658 (2013.01); F15B 2211/71 (2013.01)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
DE 19600650 A1 19970724; DE 19600650 C2 20030528; DE 59610776 D1 20031120; EP 1288507 A2 20030305; EP 1288507 A3 20030507; EP 1288507 B1 20060118; IN 188385 B 20020914; ZA 9777 B 19970711
DOCDB simple family (application)
DE 19600650 A 19960110; DE 59610776 T 19961221; EP 02023249 A 19961221; IN 627BO1996 A 19961231; ZA 9777 A 19970106