(19)
(11) EP 2 224 132 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.03.2011 Bulletin 2011/12

(43) Date of publication A2:
01.09.2010 Bulletin 2010/35

(21) Application number: 10152003.9

(22) Date of filing: 28.01.2010
(51) International Patent Classification (IPC): 
F04B 9/113(2006.01)
F04B 53/16(2006.01)
 F04B 49/08(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated Extension States:
AL BA RS

(30) Priority: 28.01.2009 NL 2002460

(71) Applicant: J.C.R. Van Der Hart Holding B.v.
3054 AK Rotterdam (NL)

(72) Inventor:
  • van der Hart, Johann Carl Rudolf
    3054 AK Rotterdam (NL)

(74) Representative: Ketelaars, Maarten F.J.M. 
Nederlandsch Octrooibureau J.W. Frisolaan 13
2517 JS Den Haag
2517 JS Den Haag (NL)

   


(54) Pumping device


(57) The invention relates to a pumping device comprising a first low pressure plunjer with a first plunjer surface area and which is up and down moveable in a first cylinder, and a functionally coupled second, high pressure plunjer with a second, smaller plunjer area and which is moveable in a second cylinder, which first plunger in operation drives the second cylinder causing in operation an amplification of the compressor force for pumping a fluid, wherein further a breathing segment is provided between both plungers, in which the space of the breathing segment is in fluid connection coupled with an inlet of the fluid which needs to be pumped, like a gas, and is provided with a regulator for in operation maintaining a small overpressure on the breathing segment.







Search report