EP 0910745 B1 20021127 - DIAPHRAGM FOR A DIAPHRAGM PUMP
Title (en)
DIAPHRAGM FOR A DIAPHRAGM PUMP
Title (de)
MEMBRANE FÜR EINE MEMBRANPUMPE
Title (fr)
MEMBRANE POUR UNE POMPE A MEMBRANE
Publication
Application
Priority
- DE 29612117 U 19960711
- EP 9703698 W 19970711
Abstract (en)
[origin: WO9802661A1] The invention relates to a diaphragm for a diaphragm pump which has a diaphragm body (2) consisting of resilient material, comprising a substantially annular outer region of a relatively low thickness and an adjacent central region which becomes thicker radially towards the centre, and a solid moulded core (3) cured in the central region of the diaphragm body (2) and for connection to a pump drive part, wherein (a) the outer diameter (F) of the moulded core (2) is less than a third of the outer diameter (D) of the diaphragm body (1), and (b) the material thickness (L) of the diaphragm body (1) in the central region above the moulded core is between 5 % and 20 % of the outer diameter (D) of the diaphragm. Said diaphragm can be used to avoid, on both sides of the top dead centre region, undesirable deformation of the diaphragm (1) surface facing the pump chamber (5) during a tilt transmitted from the drive rods to the moulded core (3). Said diaphragm (1) can therefore be used to produce a diaphragm pump with a low clearance volume and a large compression ratio.
IPC 1-7
IPC 8 full level
F04B 43/02 (2006.01); F04B 43/00 (2006.01)
CPC (source: EP US)
F04B 43/0054 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR IT
DOCDB simple family (publication)
DE 29612117 U1 19960912; DE 59708833 D1 20030109; EP 0910745 A1 19990428; EP 0910745 B1 20021127; JP 2000517392 A 20001226; US 6055898 A 20000502; WO 9802661 A1 19980122
DOCDB simple family (application)
DE 29612117 U 19960711; DE 59708833 T 19970711; EP 9703698 W 19970711; EP 97938821 A 19970711; JP 50560198 A 19970711; US 19470398 A 19981218