EP 2009283 A2 20081231 - Hydraulically driven machine improvement
Title (en)
Hydraulically driven machine improvement
Title (de)
Verbesserung für eine hydraulisch angetriebene Maschine
Title (fr)
Améliorations d'une machine hydraulique
Publication
Application
Previously filed application
07100835 20070119 EP
Priority
- EP 08163603 A 20070119
- EP 07100835 A 20070119
Abstract (en)
A hydraulically driven diaphragm pumping machine comprises a plunger (6) that is slidably mounted in a middle part of the inside of the machine's hydraulic cylinder (5) between first and second bellow-like diaphragms (4,10). Ends of the plunger (6) are connected to the first and second bellows-like diaphragm (10) to define respective first and second outer annular spaces (a) that are independent of one another, and the pressure of fluid in the first annular space (a) is independent of the pressure of fluid in the second annular space (a). The machine may also comprise a hydromechanical switch for commutating a value (102) to automatically control the supply of hydraulic fluid to the hydraulic cylinder at given moments of the machine's cycle.
IPC 8 full level
F01L 23/00 (2006.01); F04B 9/105 (2006.01); F04B 43/113 (2006.01)
CPC (source: EP)
F01B 19/04 (2013.01); F01L 21/04 (2013.01); F04B 9/105 (2013.01); F04B 43/113 (2013.01); F04B 43/1133 (2013.01); F04B 43/1136 (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 LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
EP 1947331 A1 20080723; EP 2009283 A2 20081231; EP 2009283 A3 20090429; EP 2009283 B1 20160323
DOCDB simple family (application)
EP 07100835 A 20070119; EP 08163603 A 20070119