EP 1577555 B1 20080102 - Pumping device for a fluid
Title (en)
Pumping device for a fluid
Title (de)
Pumpvorrichtung für ein Fluid
Title (fr)
Dispositif de pompage pour un fluide
Publication
Application
Priority
DE 102004013142 A 20040317
Abstract (en)
[origin: EP1577555A1] The pump device for especially an abrasive fluid has a cylinder casing (15) in which moves a piston element (20) through volume change of a working chamber (12) for the fluid. A piston seal (21) is fitted between the piston element and cylinder casing to seal the working chamber. A chamber (10) to hold a blocking fluid is provided on the piston seal side facing away from the working chamber, and means are provided to adapt the pressure in the blocking chamber to the pressure in the working chamber. Independent claims are also included for the following: (A) a fluid grinding machine equipped with the pump device as specified in the invention; and (B) a method for the feed of especially an abrasive fluid using the proposed pump device.
IPC 8 full level
F04B 53/14 (2006.01); F04B 15/02 (2006.01); F04B 53/12 (2006.01)
CPC (source: EP)
F04B 15/02 (2013.01); F04B 53/123 (2013.01); F04B 53/143 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1577555 A1 20050921; EP 1577555 B1 20080102; AT E382794 T1 20080115; DE 102004013142 A1 20051006; DE 502005002368 D1 20080214
DOCDB simple family (application)
EP 05001953 A 20050131; AT 05001953 T 20050131; DE 102004013142 A 20040317; DE 502005002368 T 20050131