Global Patent Index - EP 1604755 A1

EP 1604755 A1 20051214 - Injection assembly with pressure booster for pressure die-casting machines, and pressure die-casting machine provided with the injection assembly

Title (en)

Injection assembly with pressure booster for pressure die-casting machines, and pressure die-casting machine provided with the injection assembly

Title (de)

Vorrichtung zur Erhöhung der Einspitzdruck beim druckgiessen und so ausgerüstete Spritzgiessmachine

Title (fr)

Dispositif d'amplification de pression d'injection de coulée sous pression et machine à couler sous pression équipée de ce dispositif

Publication

EP 1604755 A1 20051214 (EN)

Application

EP 05005109 A 20050309

Priority

IT MI20040769 A 20040420

Abstract (en)

An injection assembly with pressure booster for pressure die-casting machines, which includes a main injection piston (7) that is actuated by a pressurized liquid that is allowed to flow by a check valve (13), and a booster piston (17), which is arranged so that it can slide axially with respect to the main piston (7), wherein the multiplier piston (17) is separated from the check valve (13) and is arranged downstream thereof along the advancement direction of the main injection piston (7).

IPC 1-7

B22D 17/20

IPC 8 full level

B22D 17/20 (2006.01)

CPC (source: EP)

B22D 17/203 (2013.01)

Citation (search report)

  • [A] US 3605871 A 19710920 - WHITEHEAD RICHARD K SR, et al
  • [A] FR 2518914 A1 19830701 - MUELLER WEINGARTEN MASCHF [DE]
  • [A] DE 4101551 A1 19920723 - JANOWSKI GMBH [DE]
  • [A] US 4690629 A 19870901 - HORIKAWA YOICHI [JP]
  • [A] PATENT ABSTRACTS OF JAPAN vol. 004, no. 167 (M - 042) 19 November 1980 (1980-11-19)
  • [A] HEMON Y: "PISTONS D'INJECTION DES MACHINES A COULER SOUS PRESSION A CHAMBRE FROIDE", FONDERIE, FONDEUR D'AUJOURD'HUI, EDITIONS TECHNIQUES DES INDUSTRIES DE LA FONDERIE, PARIS, FR, no. 105, 1 May 1991 (1991-05-01), pages 33 - 41, XP000205431, ISSN: 0249-3136

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 MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1604755 A1 20051214; EP 1604755 B1 20070207; AT E353257 T1 20070215; DE 602005000538 D1 20070322; IT MI20040769 A1 20040720

DOCDB simple family (application)

EP 05005109 A 20050309; AT 05005109 T 20050309; DE 602005000538 T 20050309; IT MI20040769 A 20040420