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1. WO1997030306 - DIRECTIONAL VALVE

Publication Number WO/1997/030306
Publication Date 21.08.1997
International Application No. PCT/DE1997/000237
International Filing Date 06.02.1997
Chapter 2 Demand Filed 08.08.1997
IPC
F15B 13/04 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
13Details of servomotor systems
02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
04for use with a single servomotor
CPC
F15B 13/0402
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
13Details of servomotor systems
02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
04for use with a single servomotor
0401Valve members; Fluid interconnections therefor
0402for linearly sliding valves, e.g. spool valves
Y10T 137/7764
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
137Fluid handling
7722Line condition change responsive valves
7758Pilot or servo controlled
7762Fluid pressure type
7764Choked or throttled pressure type
Y10T 137/7788
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
137Fluid handling
7722Line condition change responsive valves
7781With separate connected fluid reactor surface
7784Responsive to change in rate of fluid flow
7787Expansible chamber subject to differential pressures
7788Pressures across fixed choke
Applicants
  • MANNESMANN REXROTH GMBH [DE]/[DE] (AllExceptUS)
  • RAUSCH, Georg [DE]/[DE] (UsOnly)
Inventors
  • RAUSCH, Georg
Agents
  • KUHNEN, WACKER & PARTNER
Priority Data
196 05 862.716.02.1996DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) WEGEVENTIL
(EN) DIRECTIONAL VALVE
(FR) DISTRIBUTEUR
Abstract
(DE)
Offenbart ist ein 2-Wege-Einbauventil (2) mit einem in einer Ventilbuchse (4) geführten und von einem Hydraulikfluid durchströmbaren Hauptkolben (6), über den ein Eingangsanschluß (B) mit einem Ausgangsanschluß (A) verbunden ist. Im Bereich einer Drosselstelle (8) des Hauptkolbens (6) ist eine Wirkfläche (D-d) vorgesehen, so daß aufgrund des Druckabfalls an der Drosselstelle (8) eine Druckkraft auf den Hauptkolben (6) wirkt, die diesen in seine Ausgangsstellung beaufschlagt.
(EN)
The invention relates to a 2-port directional fitted valve (2) with a main piston (6) through which hydraulic fluid can flow, guided in a valve bushing (4) and via which an inlet connection (B) is connected to an outlet connection (A). An operative surface (D-d) is provided in the region of a throttle point (8) of the main piston (6) with the result that when the pressure drops at the throttle point (8) a pressure force acts on the main piston (6) which pushes it back into its starting position.
(FR)
L'invention concerne un distributeur bidirectionnel intégré (2) comportant un piston principal (6) guidé dans une douille (4), parcouru par un fluide hydraulique, et reliant un raccordement d'entrée B à un raccordement de sortie A. Une surface active (D-d) est ménagée dans la région d'un point d'étranglement (8) du piston principal (6), de sorte que lorsque la pression chute au niveau du point d'étranglement (8), une force de pression agit sur le piston principal (6) pour le ramener à sa position initiale.
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