EP 1323924 A3 20031126 - Partially preloaded pump diaphragms
Title (en)
Partially preloaded pump diaphragms
Title (de)
Zum Teil vorgespannte Pumpenmembran
Title (fr)
Membrane de pompe partiellement prétendue
Publication
Application
Priority
US 2742201 A 20011219
Abstract (en)
[origin: EP1323924A2] A partially preloaded diaphragm (10) having an outer attachment portion (12) defining a first plane (P) and disposed about an axis (21) substantially perpendicular to the first plane. An inner attachment portion (16) is disposed substantially perpendicular to the axis of the outer attachment portion and defines a second plane (C). The inner attachment portion is movable away from the outer attachment portion into a fully extended pumping position defining a third plane (F). The first plane and the second plane are spaced at a distance to define a preload distance (PC) when the diaphragm is at rest, and the first and third plane are spaced to define a pump stroke distance (PF) when the diaphragm is fully extended. The preload distance is from about 25 percent to about 85 percent of the pump stroke distance. <IMAGE>
IPC 1-7
IPC 8 full level
F04B 43/00 (2006.01)
CPC (source: EP US)
F04B 43/0054 (2013.01 - EP US)
Citation (search report)
- [X] DE 3813500 A1 19891102 - ALKOR GMBH [DE]
- [X] DE 9306501 U1 19930902 - ASF GMBH [DE]
- [X] DE 9403103 U1 19940414 - ASF GMBH [DE]
- [X] EP 0916846 A2 19990519 - WESTINGHOUSE AIR BRAKE CO [US]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR
DOCDB simple family (publication)
EP 1323924 A2 20030702; EP 1323924 A3 20031126; CA 2413376 A1 20030619; US 2003110939 A1 20030619
DOCDB simple family (application)
EP 02258415 A 20021205; CA 2413376 A 20021129; US 2742201 A 20011219