EP 0755486 B1 19980225 - PUMP
Title (en)
PUMP
Title (de)
PUMPE
Title (fr)
POMPE
Publication
Application
Priority
- DE 4412668 A 19940413
- EP 9501317 W 19950411
Abstract (en)
[origin: US5785508A] PCT No. PCT/EP95/01317 Sec. 371 Date Oct. 21, 1996 Sec. 102(e) Date Oct. 21, 1996 PCT Filed Apr. 11, 1995 PCT Pub. No. WO95/28569 PCT Pub. Date Oct. 26, 1995In a diaphragm pump flap valves accommodated in a pump head are provided which have a valve disk in which are situated valve flaps (14) circumscribed by partial ring-shaped recesses. These are respectively flexibly connected with the remaining valve disk (15) by means of a web (17). The valve disk is clamped between pump head elements in an area circumscribing each respective valve. In order to avoid material displacements and deformations resulting from the clamping from acting upon the web and the valve flap (14), it is provided that an opening (19) of the valve disk (15) is situated in a connecting area between valve flap (14), web (17) and outer clamping (18), facing away from the valve flap (14). Material displacements originating from the clamping area (18) can thereby no longer influence the valve flap (14) and the web (17), since a transmission of these material deformations is interrupted in the area of the opening (19).
IPC 1-7
IPC 8 full level
F04B 39/10 (2006.01); F04B 53/10 (2006.01)
CPC (source: EP US)
F04B 39/1073 (2013.01 - EP US); F04B 53/105 (2013.01 - EP US); F04B 53/1092 (2013.01 - EP US); Y10T 137/7891 (2015.04 - EP US)
Designated contracting state (EPC)
CH DE FR GB LI
DOCDB simple family (publication)
US 5785508 A 19980728; DE 4412668 A1 19951019; DE 4412668 C2 19981203; DE 59501502 D1 19980402; EP 0755486 A1 19970129; EP 0755486 B1 19980225; JP 3621702 B2 20050216; JP H09512077 A 19971202; WO 9528569 A1 19951026
DOCDB simple family (application)
US 72223996 A 19961021; DE 4412668 A 19940413; DE 59501502 T 19950411; EP 9501317 W 19950411; EP 95916624 A 19950411; JP 52668895 A 19950411