Hydraulically driven double acting diaphragm pump

(19)

(11)

EP 0 919 724 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	19.04.2000 Bulletin 2000/16

(43)	Date of publication A2:
	02.06.1999 Bulletin 1999/22

(21)	Application number: 98830707.0

(22)	Date of filing: 25.11.1998

(51)	International Patent Classification (IPC)⁷: F04B 43/073

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
	Designated Extension States:
	AL LT LV MK RO SI

(30)

Priority:

28.11.1997 IT RM970739

(71)	Applicant: Ente per le nuove tecnologie, l'energia e l'ambiente ( ENEA)
	00196 Rome (IT)

(72)	Inventors:
	Corallo, Giuseppe 00155 Roma (IT) Franchi, Aldo 00066 Colle Manziana RM (IT) Cardinali, Luciano 00198 Roma (IT)

(74)	Representative: Tonon, Gilberto et al
	c/o Società Italiana Brevetti S.p.A. Piazza di Pietra, 39 00186 Roma 00186 Roma (IT)

(54)	Hydraulically driven double acting diaphragm pump

(57) A pumping device for liquids or aeriform substances of a double-acting reciprocating type, characterized in that it comprises a first and a second pumping unit provided with a separating element between a working fluid and a pumped fluid, and connected to an oil control assembly arranged to induce reciprocating motions in said separating elements of said units by means of pressurized oil so as to produce a suction phase in one unit and a delivery phase in the other unit and viceversa, in a continuous way.

Search report