EP2440437A1 - Accouplement de raccordement pour une vis de purge d'un système hydraulique - Google Patents

Accouplement de raccordement pour une vis de purge d'un système hydraulique

Info

Publication number
EP2440437A1
EP2440437A1 EP10711000A EP10711000A EP2440437A1 EP 2440437 A1 EP2440437 A1 EP 2440437A1 EP 10711000 A EP10711000 A EP 10711000A EP 10711000 A EP10711000 A EP 10711000A EP 2440437 A1 EP2440437 A1 EP 2440437A1
Authority
EP
European Patent Office
Prior art keywords
screw
connection
hydraulic system
coupling
adapter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10711000A
Other languages
German (de)
English (en)
Inventor
Peter Rösler
Thomas Wittrock
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maszull Martin
Original Assignee
Maszull Martin
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Maszull Martin filed Critical Maszull Martin
Publication of EP2440437A1 publication Critical patent/EP2440437A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18—Safety devices; Monitoring
    • B60T17/22—Devices for monitoring or checking brake systems; Signal devices
    • B60T17/221—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems
    • B60T17/222—Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems by filling or bleeding of hydraulic systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/28—Valves specially adapted therefor
    • B60T11/30—Bleed valves for hydraulic brake systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
    • B60T17/043—Brake line couplings, air hoses and stopcocks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/005—Filling or draining of fluid systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/044—Removal or measurement of undissolved gas, e.g. de-aeration, venting or bleeding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/02—Fluid-pressure mechanisms
    • F16D2125/16—Devices for bleeding or filling

Definitions

  • the invention relates to a connection coupling for a bleed screw of a hydraulic system and an adapter for a bleed screw and a corresponding bleed screw.
  • hydraulic fluid assumes the task of power and power transmission.
  • the reason for this is, inter alia, that the hydraulic fluid is not compressible and thus the best possible power transmission with the lowest possible losses is feasible.
  • Hydraulic system included, reduces the possibility of hydraulic fluid to
  • Hydraulic fluid the air is compressible.
  • a hydraulic motor vehicle brake in which the entire braking force on the
  • Air is used.
  • compensation by increased pressure build-up is not possible, because the possible travel distance of the master cylinder, for example the master cylinder, is limited.
  • BESTATIGUNGSKOPIE This reduces the force acting on the wheel brake cylinder force. Likewise, the time is extended until the still possible braking effect occurs.
  • the filling of a still empty hydraulic system takes place in such a way that devices are connected to the two ends of the hydraulic system, which make possible the filling process.
  • a device is connected on the one side to the reservoir of the master cylinder, which supplies the brake system with fresh brake fluid. Often this is done under a slight overpressure, with which the liquid is pressed into the brake system.
  • air is removed via the so-called bleed screws on the wheel brake cylinders by these screws are opened and there, for example, a hose is connected. Possibly. This venting process is supported by the use of a negative pressure, which is to suck the air out of the brake system.
  • the air bags can also be through the above connection of
  • the invention has the object to improve the technique for filling, emptying, venting and / or flushing of hydraulic system.
  • connection coupling for a bleed screw of a hydraulic system is proposed, wherein the connection coupling a
  • connection coupling has a sealing element for the sealing and releasable coupling of the connection coupling to the hydraulic system via the venting screw and a line connection to the sealing Connection of the connection coupling with a pressure and / or vacuum line provided for filling, emptying, venting and / or flushing of the hydraulic system.
  • Embodiments of the invention have the advantage that an always tight connection between the pressure and / or vacuum line and the
  • Hydraulic system can be manufactured. After filling or
  • the screw body is arranged rotatably relative to the line connection to the connection coupling. This simplifies the rotation of the bleed screw for the purpose of loosening or tightening the bleed screw, since the screw can be rotated regardless of the current position of the pipe connection for the purpose of rotation of the bleed screw. An unintentional twisting of the line connection and thus the connected vacuum or
  • connection coupling further comprises a connection body, wherein the line connection is arranged on the connection body and wherein the screw body is rotatable relative to the connection body.
  • the line connection is arranged rigidly on the connection body, ie the Line connection is no longer rotatable or displaceable relative to the connection body. It is possible, for example, that the connection body and the line connection are integrally formed.
  • connection body preferably has a torque support on the hydraulic system.
  • Screw body is ensured relative to the connection body and thus to the hydraulic system for the purpose of rotation of the vent screw. This is particularly relevant in the case of an automated venting and filling, since, for example, by a motor on the screw and thus on the vent screw torques applied without appropriate support could not be transferred.
  • the sealing element is arranged on the screw body. This ensures that in any position of the bleed screw is constantly given a tight coupling of the connection coupling to the hydraulic system via the bleed screw.
  • the screw body at least partially absorbs the vent screw and also has an inner contour complementary to the outer connection contour of the vent screw for the rotatable engagement for the transmission of torques.
  • the inner contour of the screw is designed as a hexagon socket, wherein the vent screw has a corresponding formed in the form of a hexagon section.
  • connection coupling has a valve, which for releasing a connection between the line connection and the hydraulic system when coupling the connection coupling to the hydraulic system and for closing the Connection is formed when uncoupling.
  • the valve provides additional security that, for example, when removing the connection coupling of the vent screw still located in the pressure and / or vacuum line hydraulic fluid can not escape via the line connection into the interior of the disconnected connection coupling and from there the connection coupling unintentionally into the environment.
  • the connection coupling can be pulled off axially, for example, and then immediately the valve closes the passage through the connection coupling for liquid and / or air with the removal.
  • the invention can thus be usefully used, in particular, on those hydraulic systems in which the venting screw itself is sealed off against unauthorized leakage of liquid or the ingress of air.
  • This is possible for example by an O-ring, which is installed in the bleed screw and sealingly guided on the hydraulic system, or by the application of sealant to the thread of the bleed screw.
  • connection coupling has a fluid channel between the sealing element and the line connection, wherein the valve has a valve body and a compression spring, wherein the valve body can be lifted by a valve seat against the force of the compression spring when it is coupled to the vent screw.
  • the compression spring is supported on the screw body. This determines directly the position of the bleed screw the position of the valve. It is automatically ensured that when filling the hydraulic system only hydraulic fluid can get into the interior of the connection coupling and from there via the bleed screw in the hydraulic system, when the connection coupling is coupled to the bleed screw.
  • the sealing element has a seal which encloses an end-side connection nipple of the connectable venting screw.
  • connection coupling has a drive element for effecting the rotation of the screw body relative to the connection body.
  • the drive element is an electric or pneumatic drive. This allows automated operation of the connection coupling.
  • the invention relates to an adapter for connecting a bleed screw with a hydraulic system, wherein the adapter is fluidly connectable on the one hand with the hydraulic system and on the other hand with the bleed screw and wherein the adapter has a torque support for a connection coupling of the type described above.
  • the adapter according to the invention which has already integrated the torque support for the connection coupling, this problem can be effectively solved.
  • the terminal body on the adapter over the torque support rotatably support, so that acting on the screw torque acts exclusively on the vent screw, which is rotated relative to the adapter, while the connection coupling is fixed relative to the adapter.
  • the bleed screw on a fluid channel wherein the adapter is sealingly screwed into a receptacle formed on the hydraulic system.
  • the receptacle can be, for example, a screw-in opening for a conventional venting screw.
  • the adapter for guiding a movement of the vent screw between a closed position and an open position is formed and has a sealing device, wherein the sealing device is designed for sealing and releasable coupling of the vent screw to the hydraulic system via the adapter.
  • the sealing device is designed to release in the open position of the vent screw a connection between the fluid channel and the hydraulic system, and in the closed position of the Bleed screw to close the connection between the fluid channel and the hydraulic system.
  • the bleed screw has an axial fluid channel and a passage to the fluid channel, wherein the passage for connection in the adapter between the fluid channel and the hydraulic system is formed.
  • the passage may be a transverse bore in the bleed screw, with a sealing cone formed on the bleed screw which cooperates with a conical sealing seat of the sealing device of the adapter to selectively release or close the connection between the fluid channel and the hydraulic system ,
  • FIG. 2 angled embodiment of a connection coupling in a sectional side view
  • FIG. 3 Automated connection coupling in a sectional side view
  • FIG. 1 shows a connection coupling 100 for a venting screw 102, not shown, of a hydraulic system.
  • the connection coupling 100 is plugged onto the venting screw 102 so that a sealing ring 104, for example of EPDM or silicone, tightly surrounds the end-side connection nipple of the venting screw 102 and a hexagon 106 engages on a corresponding hexagon of the venting screw 102.
  • a sealing ring 104 for example of EPDM or silicone
  • the screw body 122 comprises the hexagon 106, the EPDM or silicone gasket 104, the valve body 108 and the valve seat 112 and the pressure spring 110.
  • the screw body 122 is rotatably arranged on a connection body 124 which surrounds the ring connection 114 and includes the lead terminal 116 at the ring terminal 114. A rotation of the screw body 122 thus causes a rotation of the vent screw 102 relative to the connection body 124.
  • the ring connection 114 is rotatably mounted on the screw body 122 by means of a self-locking nut 118 and two stop disks 120. Instead of the self-locking nut and a locking ring could be used. Two O-rings 126 seal the ring port 114 from the environment.
  • the connection coupling 100 further has an inner square 128, wherein the latter is arranged on the end of the screw body 122 facing away from the vent screw 102. At the inner square 128, a tool can be attached to tighten the vent screw 102 or solve. For alternative operation (eg in confined spaces), the connection coupling below the inner square 128 may still have an external hexagon.
  • the filling, rinsing or venting process can now be performed on an outwardly sealed system.
  • the bleed screw 102 can be tightened with a defined torque.
  • a torque wrench or torque wrench is attached to inner quad 128.
  • the coupling 100 can be withdrawn axially, wherein the valve body 108 closes the passage for liquid and / or air simultaneously.
  • FIG. 2 shows a modified design of the connection coupling 100 in the form of an angle head for connecting overpressure and / or underpressure systems to the venting screw 102 for filling or venting a hydraulic system.
  • the angle head is composed of the connection body 124 and the screw 122 for actuating the vent screw 102.
  • the screw 122 is rotatably but captively fixed with threaded pins 202 in a groove 200 of the connector body 124.
  • connection body 124 in turn has a line connection 116, via which the hydraulic system can be evacuated or filled.
  • Angular head with the hexagon 106 of the screw 122 is placed on a corresponding portion of the vent screw 102, wherein by turning the screw 122 manually or using For example, a wrench, the bleed screw 102 can be rotated and thus solved or tightened.
  • the illustrated with respect to Figure 1 check valve 108 can still be integrated into the angle head.
  • FIG. 3 shows an automatic connection coupling for connecting filling and / or venting devices to venting valves or venting screws of hydraulic systems with an automated screwing function.
  • connection coupling 100 again consists in its basic components of the screw body 122 and the connection body 124.
  • the connection body 124 also serves for torque support on the hydraulic system.
  • the hydraulic system has a corresponding torque support 300, relative to which the vent screw 102 is rotatably mounted.
  • a torque-controlled drive unit 306 which is in a rotationally fixed connection 304 with the connection body 124, a torque on the screw body 122 and from this in turn via the hex 106 of the screw 122 to the vent screw 102 for the purpose of loosening or tightening the vent screw be transmitted.
  • connection coupling 100 is attached to the venting screw 102, wherein the internal hexagon 302 at the torque support
  • Internal hexagon 106 of the threaded body 122 simultaneously engages over the corresponding external hexagon on the upper part of the venting screw 102, with which it can be tightened or loosened. It should be noted here that instead of the generally proposed use of a hexagonal shape, any shape can be used, which reliably ensures a torque transmission or a torque support.
  • connection body 124 and screw 122 are sealed to each other by O-rings 126.
  • valve body 108 By attaching to the vent screw 102, in turn, the valve body 108 is lifted against the force of the compression spring 110 from the valve seat 112 and gives the passage in the connection coupling 100 and from there into the line connection 116 free.
  • the drive unit 306 is provided, which on the one hand is non-rotatably connected to the connection body 124 and on the other hand is connected to the screw body 122 such that it can generate a relative movement between the screw body 122 and connection body 124. As a result, a torque can be transmitted to the bleed screw 102 without the need for any further external torque support.
  • the vent screw 102 fully automatically in the filling process can be operated (opened and closed), without the need for manual intervention.
  • the proposed torque can be applied and documented.
  • a significant advantage of the embodiment shown is that a defined uniform interface can be provided by the torque support on the lower part 300 of the vent screw 102 in all hydraulic systems, which flexibilizes the entire process maximum.
  • FIG. 4 shows the torque support 300 in the form of an adapter 300 for the venting screw 102, wherein the adapter 300 fits into a corresponding one Recording of the hydraulic system can be screwed.
  • For torque support is a hexagonal portion 418 on the adapter 300th
  • the bleed screw 102 shown in FIG. 4 replaces a conventional bleed screw with the adapter 300.
  • the lower part 416 of the adapter 300 is screwed to the adapter thread 426 instead of the conventional vent screw, for example, in a brake caliper of a motor vehicle and there seals metallic via the sealing cone 430.
  • the vent screw 102 is screwed (thread 408 in thread 422).
  • the O-ring 406 of the upper part 400 slides along the sealing surface 420 of the adapter 300.
  • the upper part 400 seals the brake system or generally the hydraulic system to the outside via the sealing cone 414 on the sealing seat 424 of the adapter 300.
  • the upper part 400 For filling or venting the upper part 400 is turned on by about one to two turns. This results in a passage in the form of a channel from the longitudinal bore 428 of the adapter 300 and the transverse bore 412 of the vent screw 102 and the longitudinal bore 410 of the upper part 400. Through this channel, the hydraulic system can be filled using the coupling described above and vented.
  • connection coupling 100 engages with the corresponding hexagon 302 of the connection body 124 on the hexagon 418 of the adapter 300, and with the hexagon 106 of the screw body 122 on the hexagon 402 of the upper part 400 and with the sealing ring 104 via the hose connection 404 of FIG Upper part 400.
  • connection coupling described for complete filling and venting based on a brake system is exemplified.
  • the conventional bleed screw of a brake system should be replaced by one that keeps the hydraulic brake system airtight to the environment even when it is opened for the filling or bleeding process.
  • venting screws or venting valves as described for example in relation to FIG. 4, which, due to the system, include a sealing of the braking system in relation to the environment.
  • a special device that supports or automatically performs the filling or bleeding of the brake system must now also be connected to the above-mentioned bleed screws and to the reservoir of the brake fluid also air and pressure tight via suitable hoses. In the case of the surge tank this happens e.g. via a special cap, which is screwed, plugged or otherwise tightly fastened in place of the regular cap.
  • the device is now tightly connected to the bleed screws by means of the connection coupling described above.
  • the entire brake system is emptied via the venting screws, if necessary with the aid of a negative pressure that is generated by the device. This completely empties the entire brake system. In the system possibly existing old brake fluid is sucked off and collected in a container.
  • the filling and deaeration device has e.g. automatically controlled valves.
  • the valves switch the hose lines on the bleed screws to the vacuum via a pressure-tight brake fluid collection tank.
  • the hose is opened to the ambient air to allow complete extraction of the old brake fluid.
  • the automatic valves on the hose lines to the wheel brake cylinders are opened and fresh brake fluid can flow into the empty brake system.
  • This is done, as described above, characterized in that the screw body of the respective connection coupling acts on the venting screw and transmits a torque, so that it is released by the rotation of the venting screw.
  • the bleeder screws can already be opened and only solenoid valves located in the hose line are opened.
  • the hose and valve assembly is chosen such that even in the hose lines and valves no air is available.
  • the lines and valves are preferably to flood before the start of the process and then close to the brake system. It is advantageous if the new brake fluid in the lines during the evacuation process has no contact with the adjacent vacuum, otherwise they would be under negative pressure, which could lead to outgassing of the air dissolved in the brake fluid present. This would not improve the filling result achieved, on the contrary, could possibly form air bubbles that could accumulate in the brake system.
  • the process of the inflow of the brake fluid can now be done in a further step either without further support by a vacuum pump or be easily supported by this. Among other things, this depends on the geometric design of the brake system. Also, if necessary, the process of inflow can also be assisted by a pump which forces the fresh brake fluid into the brake system. Both supporting measures can also be used in combination and / or in succession. It has proven to be favorable to carry out the filling of the brake system "from the bottom to the top", that is to let the brake fluid flow in the direction of the expansion tank via the bleed screws, but depending on the vehicle or brake type, the reverse direction may also be advantageous.
  • the brake system is first filled.
  • the pistons would have to be applied to the brake linings and discs before the vehicle is put into operation by repeated actuation of the master brake cylinder.
  • this is possible in principle, on the one hand it leads to the process being terminated in an undefined state, which is unfavorable in the case of automation.
  • a part of the brake fluid needed and stored in the expansion tank for the wear compensation of the brake pads is already used for the application of the pistons. Since this volume is not insignificant in vehicles with large brake calipers, the prescribed filling quantity of the expansion tank can already be reached after the filling process.
  • the brake pistons could be created by an overpressure to be established in the system.
  • This overpressure can also be applied in the form of a pressure surge. In both cases, this pressure is built up by a pump in the filling and venting machine and fed into the braking system. Also for this process step, a completely sealed external system is indispensable prerequisite.
  • the prescribed liquid level is set in the expansion tank.
  • the brake fluid is sucked off to a defined fill level via the abovementioned hose connection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)

Abstract

L'invention concerne un accouplement de raccordement (100) pour une vis de purge (102) d'un système hydraulique, l'accouplement de raccordement (100) présentant : - un corps de vis (122) destiné à venir en prise avec la vis de purge (102), une rotation du corps de vis (122) entraînant une rotation de la vis de purge (102) en vue de desserrer ou de serrer la vis de purge (102), - un élément d'étanchéité (104) destiné à accoupler de manière étanche et amovible l'accouplement de raccordement (100) au système hydraulique par l'intermédiaire de la vis de purge (102), - un raccord de conduite (116) destiné à relier de manière étanche l'accouplement de raccordement (100) à une conduite sous pression et/ou une conduite à vide agencée pour remplir, vider, purger et/ou rincer le système hydraulique.
EP10711000A 2009-02-16 2010-02-16 Accouplement de raccordement pour une vis de purge d'un système hydraulique Withdrawn EP2440437A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009009111 2009-02-16
PCT/EP2010/000947 WO2010091896A1 (fr) 2009-02-16 2010-02-16 Accouplement de raccordement pour une vis de purge d'un système hydraulique

Publications (1)

Publication Number Publication Date
EP2440437A1 true EP2440437A1 (fr) 2012-04-18

Family

ID=42123167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10711000A Withdrawn EP2440437A1 (fr) 2009-02-16 2010-02-16 Accouplement de raccordement pour une vis de purge d'un système hydraulique

Country Status (2)

Country Link
EP (1) EP2440437A1 (fr)
WO (1) WO2010091896A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2964442B1 (fr) 2010-09-08 2013-05-24 Airbus Operations Sas Dispositif de connexion a un systeme de purge
CN102777510B (zh) * 2011-05-13 2016-09-14 舍弗勒技术股份两合公司 放气接头
FR3014965B1 (fr) * 2013-12-12 2016-01-01 Technoboost Circuit hydraulique comportant une pompe de gavage et un dispositif de purge utilisant le vide
EP2952400A1 (fr) * 2014-06-03 2015-12-09 SET Schröder GmbH Dispositif de vidange écologique de fluide de traitement
WO2017129967A1 (fr) * 2016-01-25 2017-08-03 Liberty Vehicle Technologies Limited Dispositif de purge et procédé de purge d'un système hydraulique
DE102022214035B3 (de) 2022-12-20 2024-06-20 Zf Friedrichshafen Ag Betätigungsmodul

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Publication number Priority date Publication date Assignee Title
US3727638A (en) * 1971-04-26 1973-04-17 Progressive Prod Inc Drain plug assembly
US5853071A (en) * 1997-07-10 1998-12-29 Mcdonnell Douglas Corporation Bleed valve for bleeding fluid from a hydraulic circuit
US6334459B1 (en) * 1999-08-11 2002-01-01 Leon Berger Multi-fuctional brake bleeder tool
US6581905B2 (en) * 2001-11-21 2003-06-24 Tenneco Automotive Inc. Brake bleed tool
DE102005028645A1 (de) 2005-06-20 2007-01-04 Martin Maszull Entlüftungsschraube mit Rückschlagventil
US7575029B2 (en) * 2007-05-29 2009-08-18 Production Control Units, Inc. Tool assembly for evacuating, vacuum testing and charging a fluid system through a bleeder valve

Non-Patent Citations (1)

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Title
See references of WO2010091896A1 *

Also Published As

Publication number Publication date
WO2010091896A1 (fr) 2010-08-19
WO2010091896A8 (fr) 2012-03-08

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