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1. (US5996615) Flow-control valve

Office : United States of America
Application Number: 09051857 Application Date: 14.07.1998
Publication Number: 5996615 Publication Date: 07.12.1999
Grant Number: 5996615 Grant Date: 07.12.1999
Publication Kind : A
Prior PCT appl.: Application Number:EP96003735 ; Publication Number: Click to see the data
IPC:
G05D 7/01
F16K 31/36
F16K 31/363
F15B 11/00
F15B 11/05
F15B 13/00
F15B 13/042
G PHYSICS
05
CONTROLLING; REGULATING
D
SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
7
Control of flow
01
without auxiliary power
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
K
VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
31
Operating means; Releasing devices
12
actuated by fluid
36
in which fluid from the conduit is constantly supplied to the fluid motor
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
K
VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
31
Operating means; Releasing devices
12
actuated by fluid
36
in which fluid from the conduit is constantly supplied to the fluid motor
363
the fluid acting on a piston
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11
Servomotor systems without provision for follow-up action
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
11
Servomotor systems without provision for follow-up action
02
Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member
04
for controlling the speed
05
specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
13
Details of servomotor systems
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
15
FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
B
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
13
Details of servomotor systems
02
Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
04
for use with a single servomotor
042
operated by fluid pressure
CPC:
F15B 11/05
F15B 13/042
Y10T 137/7771
Y10T 137/7788
Applicants: Mannesmann Rexroth AG
Inventors: Zuegner Juergen
Cords Karl
Mueller Hans
Schulte Michael
Agents: Oliff & Berridge, PLC
Priority Data: 19539521 24.10.1995 DE
Title: (EN) Flow-control valve
Abstract: front page image
(EN)

Disclosed is a 2-way flow control valve whereby a constant hydraulic fluid volume flow may be adjusted by serial arrangement of a restrictor orifice and a control orifice. In the case of a reverse flow through the flow control valve of the present invention, a check actuating element of the flow control valve may be displaced against the bias of its own check spring in such a way that a bypass channel which bypasses the restrictor orifice can be controlled open.


Also published as:
EP0857326JPH11515076WO/1997/015875