Title (en)

CONTINUOUS FLOW POSITIVE DISPLACEMENT PUMPS

Publication

EP 0104080 A3 19840905 (EN)

Application

EP 83305514 A 19830920

Priority

GB 8226722 A 19820920

Abstract (en)

[origin: EP0104080A2] A pumping device comprising two or more hydraulic cylinder arrangements, each comprising a double ended piston the ends of which alternately pump fluid from an outlet in a respective piston cylinder. The pump is powered by a common hydraulic fluid supply which supplies motive power to each of the hydraulic cylinder arrangements and the outlets of the piston cylinders are all connected to a common outlet. An hydraulic cylinder arrangement is caused to start progressively to pump as a second hydraulic cylinder arrangement progressively and in a manner inversely proportional to the first ceases to pump.

IPC 1-7

F04B 9/10; F04B 11/00

IPC 8 full level

F04B 9/117 (2006.01)

CPC (source: EP)

F04B 9/1172 (2013.01)

Citation (search report)

• [Y] GB 1458513 A 19761215 - PRESSURE DYNAMICS LTD
• [Y] US 3847511 A 19741112 - COLE C
• [A] US 3981622 A 19760921 - HALL RICHARD W, et al
• [A] FR 2208462 A5 19740621 - POMPES DKM [FR]
• [A] DE 2446805 A1 19760408 - OTT KG LEWA
• [A] US 3405522 A 19681015 - TAMAKI TOMITA

Designated contracting state (EPC)

AT CH DE FR GB LI SE

DOCDB simple family (publication)

EP 0104080 A2 19840328; EP 0104080 A3 19840905

DOCDB simple family (application)

EP 83305514 A 19830920