EP 0426772 B1 19931118 - SELF-REVERSING RECIPROCATING PISTON PUMP WITH HYDRAULIC TRANSMISSION OF THE INVERSION SIGNAL.
Title (en)
SELF-REVERSING RECIPROCATING PISTON PUMP WITH HYDRAULIC TRANSMISSION OF THE INVERSION SIGNAL.
Title (de)
SELBSTUMSTEUERNDE KOLBENPUMPE MIT HYDRAULISCHER ÜBERTRAGUNG DES UMKEHRSIGNALS.
Title (fr)
POMPE A PISTON ALTERNATIF AUTOREVERSIBLE A TRANSMISSION HYDRAULIQUE DU SIGNAL D'INVERSION.
Publication
Application
Priority
FR 8901493 A 19890206
Abstract (en)
[origin: WO9008896A1] Pump with a self-reversing piston made to move in a reciprocating rectilinear manner by a source of hydraulic energy including a driving piston which moves with at least one driven piston. Each time it reaches the end of a stroke, the driving piston (1) activates followers (9, 9') in order to move a liquid column (10, 10') which causes a pilot slide valve (13) to be reversed; the latter is designed to reverse the main slide valve (15), which causes the driving piston to move in the other direction, thus ensuring automatic inversion by hydraulic means.
IPC 1-7
IPC 8 full level
F01L 25/06 (2006.01); F04B 9/113 (2006.01)
CPC (source: EP)
F01L 25/063 (2013.01); F04B 9/113 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 9008896 A1 19900809; AU 5158490 A 19900824; CA 2026986 A1 19900807; DE 69004667 D1 19931223; DE 69004667 T2 19940519; EP 0426772 A1 19910515; EP 0426772 B1 19931118; FR 2642796 A1 19900810; FR 2642796 B1 19940506
DOCDB simple family (application)
FR 9000089 W 19900205; AU 5158490 A 19900205; CA 2026986 A 19900205; DE 69004667 T 19900205; EP 90903379 A 19900205; FR 8901493 A 19890206