Global Patent Index - EP 1242746 A1

EP 1242746 A1 2002-09-25 - METHOD AND APPARATUS FOR GENERATING HYDRAULIC PRESSURE

Title (en)

METHOD AND APPARATUS FOR GENERATING HYDRAULIC PRESSURE

Title (de)

VERFAHREN UND VORRICHTUNG ZUR HYDRAULISCHEN DRUCKERZEUGUNG

Title (fr)

PROCEDE ET DISPOSITIF PERMETTANT D'ENGENDRER UNE PRESSION HYDRAULIQUE

Publication

EP 1242746 A1 (EN)

Application

EP 00983611 A

Priority

  • SE 0002366 W
  • SE 9904464 A

Abstract (en)

[origin: WO0142662A1] The present invention relates to a method of operating an apparatus (1) for generating high hydraulic pressure and having a low pressure piston (12) being displaceable in a low pressure cylinder (2). Said low pressure piston carries a high pressure piston (13) that is displaceable in a high pressure cylinder (3) forming a high pressure chamber (16). The inner wall of the high pressure cylinder carries stationary fluid seals (21, 24, 43) for sealingly engaging the high pressure piston. A continuous restricted outflow of hydraulic fluid is provided from the high pressure chamber (16) at least during the initial phase of the working stroke of the apparatus to thereby relieve the high pressure seal (43). The invention also relates to an apparatus (1) for generating high hydraulic fluid pressure.

IPC 1-7 (main, further and additional classification)

F15B 3/00

IPC 8 full level (invention and additional information)

F15B 3/00 (2006.01)

CPC (invention and additional information)

F15B 3/00 (2013.01)

Citation (search report)

See references of WO 0142662A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family

WO 0142662 A1 20010614; AT 274645 T 20040915; AU 2034301 A 20010618; DE 60013324 D1 20040930; DE 60013324 T2 20050908; EP 1242746 A1 20020925; EP 1242746 B1 20040825; SE 9904464 D0 19991207