EP 0274374 A3 19881207 - HYDRAULIC PUMPING DEVICE

Title (en)

HYDRAULIC PUMPING DEVICE

Publication

EP 0274374 A3 19881207 (FR)

Application

EP 87870208 A 19871229

Priority

BE 217656 A 19861230

Abstract (en)

[origin: EP0274374A2] A structure (1) comprising at least one inlet connected to a liquid intake pipe (CA) creating a driving pressure head, a discharge outlet fitted with a discharge valve (15) and an escape outlet fitted with a stop valve (14) and an air chamber (2) leading to a discharge pipe (CR) connected in the bottom section of the air chamber, the latter comprising a flexible, tight wall (20) forming a hermetic internal chamber for a pressurised gas. <IMAGE>

IPC 1-7

F04F 1/00; F04F 7/02

IPC 8 full level

F04F 1/00 (2006.01); F04F 7/02 (2006.01)

CPC (source: EP)

F04F 1/00 (2013.01); F04F 7/02 (2013.01)

Citation (search report)

[X] FR 453150 A 19130531 - SIDNEY MERILS STEVENS [US]
[Y] DE 3149841 A1 19830630 - PFISTER & LANGHANSS [DE]
[Y] DE 137997 C
[A] US 1364617 A 19210104 - DAYNIX JOHN C
[A] FR 370727 A 19070218 - NIAGARA HYDRAULIC ENGINE C [US]
[A] FR 2219694 A5 19740920 - ROMAN JEAN [FR]

Designated contracting state (EPC)

DE FR GB NL

DOCDB simple family (publication)

EP 0274374 A2 19880713; EP 0274374 A3 19881207; BE 906113 A 19870630

DOCDB simple family (application)

EP 87870208 A 19871229; BE 217656 A 19861230