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1. WO2020117999 - THREE POSITION METERING VALVE FOR A SELF-CONTAINED ELECTRO-HYDRAULIC ACTUATOR

Publication Number WO/2020/117999
Publication Date 11.06.2020
International Application No. PCT/US2019/064572
International Filing Date 05.12.2019
IPC
F15B 15/18 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
15Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
18Combined units comprising both motor and pump
F04C 2/18 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
2Rotary-piston machines or pumps
08of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12of other than internal-axis type
14with toothed rotary pistons
18with similar tooth forms
F04C 14/24 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
14Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
24characterised by using valves controlling pressure or flow rate, e.g. discharge valves
F15B 13/02 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
CPC
F04C 14/24
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
14Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
24characterised by using valves controlling pressure or flow rate, e.g. discharge valves ; or unloading valves
F04C 2/18
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS
2Rotary-piston machines or pumps
08of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
12of other than internal-axis type
14with toothed rotary pistons
18with similar tooth forms
F15B 1/265
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
1Installations or systems with accumulators; Supply reservoir or sump assemblies
26Supply reservoir or sump assemblies
265with pressurised main reservoir
F15B 11/0426
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
11Servomotor systems without provision for follow-up action; ; Circuits therefor
02Systems essentially incorporating special features for controlling the speed or actuating force of an output member
04for controlling the speed
042by means in the feed line ; , i.e. "meter in"
0426by controlling the number of pumps or parallel valves switched on
F15B 11/05
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
11Servomotor systems without provision for follow-up action; ; Circuits therefor
02Systems essentially incorporating special features for controlling the speed or actuating force of an output member
04for controlling the speed
05specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
F15B 13/027
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
027Check valves
Applicants
  • WARNER ELECTRIC TECHNOLOGY LLC [US]/[US]
Inventors
  • ZAMMUTO, Jared, Ret
Agents
  • KOLAKOWSKI, William, F., III
Priority Data
16/211,76406.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) THREE POSITION METERING VALVE FOR A SELF-CONTAINED ELECTRO-HYDRAULIC ACTUATOR
(FR) VALVE DOSEUSE À TROIS POSITIONS POUR ACTIONNEUR ÉLECTRO-HYDRAULIQUE AUTONOME
Abstract
(EN)
A fluid pump for a linear actuator causes a rod in the actuator to extend or retract by controlling fluid flow to and from portions of a fluid chamber on either side of a piston disposed within the fluid chamber and supporting the rod. The pump includes check valves that control fluid flow between a driven pump element and each portion of the fluid chamber and a shuttle movable in response to fluid pressure along a shuttle axis extending through the valves. At least one valve includes a valve member movable between a closed position and an open position defining a fluid flow path between the driven pump element and fluid chamber and means for limiting movement of the shuttle towards the valve such that the shuttle may, depending on the position of the limiting means, move the valve member to an intermediate position between the closed and open positions.
(FR)
Une pompe à fluide d'un actionneur linéaire entraîne l'extension ou la rétraction d'une tige de l'actionneur par régulation de l'écoulement du fluide vers et depuis des parties d'une chambre de fluide, sur l'un ou l'autre côté d'un piston disposé dans la chambre de fluide et soutenant la tige. La pompe comprend des clapets anti-retour qui régulent l'écoulement de fluide entre un élément de pompe entraîné et chaque partie de la chambre de fluide et une navette mobile en réaction à une pression de fluide le long d'un axe de la navette s'étendant dans les clapets. Au moins un clapet comprend un élément mobile entre une position fermée et une position ouverte définissant une voie d'écoulement de fluide entre l'élément de pompe entraîné et la chambre de fluide et des moyens pour limiter le mouvement de la navette vers le clapet de sorte que la navette peut, en fonction de la position du moyen de limitation, déplacer l'élément de clapet vers une position intermédiaire entre les positions fermée et ouverte.
Also published as
Latest bibliographic data on file with the International Bureau