Global Patent Index - EP 0722538 B1

EP 0722538 B1 1997-10-22 - MICRO-DIAPHRAGM PUMP

Title (en)

MICRO-DIAPHRAGM PUMP

Title (de)

MIKROMEMBRANPUMPE

Title (fr)

POMPE A MICROMEMBRANE

Publication

EP 0722538 B1 (DE)

Application

EP 94927548 A

Priority

  • DE 4332720 A
  • EP 9402927 W

Abstract (en)

[origin: WO9508711A1] The invention relates to a micro-diaphragm pump consisting of two valve chambers, a pump chamber between them, each valve chamber being connected to the pump chamber by a channel, a pump drive and a diaphragm sealing the three chambers. The diaphragm has an inlet valve in the region of one valve chamber and an outlet valve in the region of the other. The aim of the invention is to design a pump in such a way that both valves may be fitted on the same side of the diaphragm and substantially to simplify the construction process of the pump body. For this purpose, the valves are integrated into the diaphragm and the valve component structures on the diaphragm are on the same side thereof, and a pump body containing the pump and valve chambers is made in one piece.

IPC 1-7

F04B 43/04; F04B 53/10; F15C 5/00

IPC 8 full level

F04B 53/10 (2006.01); F04B 43/02 (2006.01); F04B 43/04 (2006.01)

CPC

F04B 43/043 (2013.01)

Designated contracting state (EPC)

CH DK FR IT LI NL

DOCDB simple family

DE 4332720 A1 19950330; DE 4332720 C2 19970213; DK 0722538 T3 19980525; EP 0722538 A1 19960724; EP 0722538 B1 19971022; JP 2977904 B2 19991115; JP H09500945 A 19970128; US 5718567 A 19980217; WO 9508711 A1 19950330