EP 0983440 A1 20000308 - RECIPROCATING DIAPHRAGM PUMP WITH PACKLESS PISTON-CYLINDER UNIT
Title (en)
RECIPROCATING DIAPHRAGM PUMP WITH PACKLESS PISTON-CYLINDER UNIT
Title (de)
KOLBENMEMBRANPUMPE MIT DICHTUNGSLOSER KOLBEN-ZYLINDEREINHEIT
Title (fr)
POMPE A MEMBRANE A PISTON AVEC UNITE PISTON-CYLINDRE SANS GARNITURE
Publication
Application
Priority
- DE 29708906 U 19970521
- EP 9802766 W 19980512
Abstract (en)
[origin: US6299419B1] This invention provides a sealing mechanism for sealing the piston-cylinder unit of a reciprocating diaphragm pump to ensure that the piston-cylinder unit is permanently and reliably sealed while being simple to assemble. The invention further provides a piston-cylinder unit which has almost no play in the micrometer (mum) range, and which is sealed by hydrodynamically sealing a slot thereof.
IPC 1-7
IPC 8 full level
F04B 13/00 (2006.01); F04B 23/06 (2006.01); F04B 53/00 (2006.01); F04B 53/12 (2006.01)
CPC (source: EP US)
F04B 13/00 (2013.01 - EP US); F04B 23/06 (2013.01 - EP US); F04B 53/008 (2013.01 - EP US); F05C 2203/0804 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE
DOCDB simple family (publication)
WO 9853208 A1 19981126; AT E212697 T1 20020215; AU 736918 B2 20010809; AU 7911498 A 19981211; DE 29708906 U1 19970717; DE 59802964 D1 20020314; EP 0983440 A1 20000308; EP 0983440 B1 20020130; NZ 501200 A 20010629; US 6299419 B1 20011009
DOCDB simple family (application)
EP 9802766 W 19980512; AT 98929297 T 19980512; AU 7911498 A 19980512; DE 29708906 U 19970521; DE 59802964 T 19980512; EP 98929297 A 19980512; NZ 50120098 A 19980512; US 42435500 A 20000121