Equaliser for forced closure of suction valves in die-casting moulds

(19)

(11)

EP 1 181 998 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	06.03.2002 Bulletin 2002/10

(43)	Date of publication A2:
	27.02.2002 Bulletin 2002/09

(21)	Application number: 01830543.3

(22)	Date of filing: 16.08.2001

(51)	International Patent Classification (IPC)⁷: B22D 17/14

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

(30)

Priority:

24.08.2000 IT BS000060 U

(71)	Applicant: Bresciani, Edoardo
	25070 Sabbio Chiese (Brescia) (IT)

(72)	Inventor:
	The designation of the inventor has not yet been filed ()

(74)	Representative: Manzoni, Alessandro
	MANZONI & MANZONI, UFFICIO INTERNAZIONALE BREVETTI, P.le Arnaldo 2 25121 Brescia 25121 Brescia (IT)

(54)	Equaliser for forced closure of suction valves in die-casting moulds

(57) The invention concerns an equaliser for the forced closure of a suction valve in die-casting moulds. It consists of an external body or casing (11), a central thrust piston (16) guided axially on a guide head (17) and a multiplicity of Belleville washers (18) placed concentrically between piston and body. The Belleville washers (18') are set out in groups on several parallel levels defined by spacers, and each group of Belleville washers lies axially with one part on a collar (19) around the thrust piston and the other part on a support washer (20) in the said body.

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