Title:
【発明の名称】高圧油圧弁
Document Type and Number:
Japanese Patent JP2002504656
Kind Code:
A
Abstract:
The present invention relates to a high-pressure hydraulic valve in which the housing (1) at least and also preferably the operational parts, such as the main control piston (3), the manometer piston (6) and the like which are arranged inside said housing (1) and influence the hydraulic oil flow, are made of an aluminium alloy that can be hardened and tempered. The weight of the high-pressure hydraulic valve can therefore be substantially reduced. The surfaces of the parts made of the aluminium alloy that can be hardened and tempered are advantageously submitted to anodic oxidation in order to increase even more their wear resistance. This type of high-pressure hydraulic valve with a particularly light weight is mainly intended for use in mobile hydraulic systems such as those used in mobile cranes, in lifting platforms and in excavators.
Inventors:
Steiger Hans
Karl Horst
Eschweiler Marx
Ludwig Jörg
Karl Horst
Eschweiler Marx
Ludwig Jörg
Application Number:
JP2000532654A
Publication Date:
February 12, 2002
Filing Date:
February 08, 1999
Export Citation:
Assignee:
Buchher Hydraurix Actien Gezershyaft
International Classes:
F15B11/08; F16K25/00; F16K27/04; (IPC1-7): F16K25/00; F16K27/04
Attorney, Agent or Firm:
Mitsufumi Ezaki (3 others)