Fluid pressure controller for pumps

(19)

(11)

EP 1 077 332 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	10.04.2002 Bulletin 2002/15

(43)	Date of publication A2:
	21.02.2001 Bulletin 2001/08

(21)	Application number: 00117204.8

(22)	Date of filing: 10.08.2000

(51)	International Patent Classification (IPC)⁷: F04B 49/02, G01L 9/12

(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:

17.08.1999 IT PD990194

(71)	Applicant: Bross Engineering SA
	2450 Luxembourg (LU)

(72)	Inventor:
	Costola, Fausto 35030 Saccolongo (Padova) (IT)

(74)	Representative: Modiano, Guido, Dr.-Ing. et al
	Modiano & Associati SpA Via Meravigli, 16 20123 Milano 20123 Milano (IT)

(54)	Fluid pressure controller for pumps

(57) A device for controlling the operation of pumps in hydraulic circuits by detecting the pressure of the circuit and consequently activating or stopping the pump. The device comprises an oscillating circuit (23), in which the capacitor (17) is a capacitive transducer which cooperates with at least one mechanical actuator (10) for actuating at least one of the plates (15, 18) of the capacitor (17), and means for interfacing with the pump; the actuator (10) is subjected to the pressure of the fluid.

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