GB2263753A - Pressure accumulators eg for braking systems - Google Patents

Pressure accumulators eg for braking systems Download PDF

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Publication number
GB2263753A
GB2263753A GB9301838A GB9301838A GB2263753A GB 2263753 A GB2263753 A GB 2263753A GB 9301838 A GB9301838 A GB 9301838A GB 9301838 A GB9301838 A GB 9301838A GB 2263753 A GB2263753 A GB 2263753A
Authority
GB
United Kingdom
Prior art keywords
cylinder
guide piece
support piece
base
cylinder according
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Withdrawn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
GB9301838A
Other versions
GB9301838D0 (en
Inventor
Harald Ott
Barbara Schwind
Heinz Siegel
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB9301838D0 publication Critical patent/GB9301838D0/en
Publication of GB2263753A publication Critical patent/GB2263753A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/005—Pistons; Trunk pistons; Plungers obtained by assembling several pieces
    • F16J1/006—Pistons; Trunk pistons; Plungers obtained by assembling several pieces of different materials
    • 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
    • B60T13/148—Arrangements for pressure supply
    • 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
    • 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
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
    • B60T8/42—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition having expanding chambers for controlling pressure, i.e. closed systems
    • B60T8/4275—Pump-back 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/08—Ceramics; Oxides
    • F05C2203/0865—Oxide ceramics
    • F05C2203/0882—Carbon, e.g. graphite
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/042—Expansivity
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/21—Accumulator cushioning means using springs
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • F15B2201/312—Sealings therefor, e.g. piston rings
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/41—Liquid ports

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Actuator (AREA)

Description

A X 2263753
DESCRIPTION CYLINDERS FOR HYDRAULIC BRAKING SYSTEMS
The invention relates to cylinders and in particular, but not exclusively, to cylinders for accommodating pressure medium in a chamber which has a variable volume for hydraulic braking systems.
A cylinder is known (DE 25 25 724 Al), whose piston comprises a cupshaped steel plate part having an outwardly directed edge remote from the base. a plastics guide ring and a sealing ring connected thereto placed on the edge. The guide ring which cooperates with a cylinder bore has a relatively small axial extent as far as its diameter is concerned, so that it can only be expediently used with a piston having a piston rod which transmits the axial force and prevents the piston from tilting in the cylinder bore. The known design is intended for use as a pneumatic working cylinder; its use in connection with other pressure media is limited, since the steel plate part which is susceptible to corrosion is directly exposed to the pressure medium.
In accordance with the present invention there is provided a cylinder for accommodating pressure medium in a variable volume chamber for a hydraulic braking system in a motor vehicle, the cylinder having a separating piston which is longitudinally moveable in -2a cylinder bore and does not have a piston rod, the separating piston comprising a cup-shaped support piece made from steel plate having a base, a peripheral wall and a flange remote from the base, the piston further comprising a synthetic guide piece attached to the support piece and a sealing ring accommodated on the guide piece, wherein the guide piece covers the outer surface of the support piece facing the chamber and the guide piece is delimited by the flange which forms a stop surface remote from the base for the separating piston, the sealing ring fits in a groove on the outer periphery of the guide piece and a helical compression spring engages the support piece and is supported at one end by the base and at the other end indirectly on the cylinder housing.
This has the advantage that, the guide piece extending beyond the entire piston length forms a guide base which has sufficient axial length for the separating piston and can therefore alone assume the guide function for the separating piston. Moreover when accommodating aggressive or corrosive pressure medium in the chamber, the separating piston in connection with the sealing ring screens the support piece from the corrosive media. The support piece absorbs the forces exerted by the pressure medium on the piston and reinforces the guide piece. The flange 1 -3of the support piece forms a permanent axial stop which delimits the stroke movement of the piston and also to a great extent prevents abrasion by reason of the compression spring engaging the piston.
Preferably, the guide piece comprises a thermo plastic which has a low linear thermal expansion coefficient and can be injection moulded. The thermal expansion coefficient of the thermoplastic is substantially equal to the thermal expansion coefficient of steel. The thermoplastic is a glass fibre-reinforced polyphenylene sulphide. The thermoplastic contains a filler such as graphite or polytetrafluoroethylene which promotes the sliding properties.
This gives an extraordinary large degree of dimensional stability to the guide piece, since the linear thermal expansion coefficient of the material used corresponds more or less to that of steel. A cylinder formed in this way therefore functions reliably even in the case of large differences in temperature. At the same time, the guide piece is characterised by good sliding properties, wherein the glass fibre filling of the thermoplastic used does not damage the sliding surface of the cylinder, since when producing the guide piece by injection moulding, a glass fibre-free, homogeneous boundary layer is f ormed.
Preferably, the support piece is manufactured by deep-drawing and is connected to the guide piece by means of injection moulding or, by pressing, or by the use of an adhesive. The support piece comprises stainless steel. This provides an expedient and inexpensive manner for manufacturing the separating piston.
By way of example only, a specific embodiment of the invention will now be described, with reference to the accompanying drawing, which is a simplified longitudinal sectional view of a cylinder for accommodating pressure medium constructed in accordance with the present invention.
The example illustrated in the drawing shows a cylinder 1 which is intended for use as a pressure medium reservoir for hydraulic braking systems having an anti-skid control device. Cylinder 1 comprises a truncated cylinder bore 3 which ends in an aluminium housing 2. A longitudinally moveable separating piston 4 is accommodated in the cylinder bore 3. The separating piston 4 separates a chamber 5 which has a variable volume and which accommodates the pressure medium from a breathing chamber 6 which is connected to the atmosphere. A connecting bore 7 issues into the storage chamber 5 and pressure medium taken from -5the wheel brake (not illustrated) during the anti-skid control operation can be guided through the connecting bore 7. The breathing chamber 6 is sealed by means of a closure cover 8 introduced into the cylinder bore 3. The closure cover 8 is supported against the housing 2 on the outlet side of the cylinder bore 3 by a circlip 9, so that forces absorbed by the closure cover 8 are diverted into the housing. A protective cap 11 engaging an orifice 10 in the closure cover 8 seals the cylinder bore 3 without preventing an exchange of air with the breathing chamber 6.
The separating piston 4 comprises a cup-shaped support piece 18 which is made from deep-drawn steel plate, such as stainless steel, and which has a base 15, a cylindrical peripheral wall 16 and remote from the base a flange 17 directed radially outwards. The cup-shaped support piece 18 is encompassed by a guide piece 19 fixedly connected thereto and in fact on the side of the base 15 facing the storage chamber 5 as well as along the peripheral wall 16 as far as the plane of the flange 17 which remote from the base forms a stop surface for the separating piston 4 which does not have a piston rod, the surface of the stop cooperates with the closure cover 8. The guide piece 19 comprises synthetic material, such as a thermoplastic which has a low linear thermal expansion -6coefficient and which can be injection moulded. A suitable material is for example glass fibrereinforced polyphenylene sulphide, to which it is possible to add a filling material which promotes the sliding properties such as graphite, polytetrafluoro ethylene and similar. Even in the case of relatively large temperature differences, the guide piece 19 is to a great extent dimensionally stable by reason of the coefficient of = 12 10- 6 1/K corresponding approximately to steel. In addition to this, it has good sliding properties. In this way, it is possible for the guide piece 19 which can be produced by injection moulding to be connected on the inside to the support piece 18, in that the support piece introduced into an injection mould is enveloped by the fusible material of the guide piece 19. At the same time, the material fills at least one circular opening 20 in the peripheral wall 16 of the support piece 18 and produces a connection in a positive and formlocking manner between the support piece 18 and the guide piece 19.
It is possible to deviate from the preferred method of production and to connect the guide piece 19 to the support piece 18 by pressing it in or by the use of adhesive.
The guide piece 19 is provided during the -7moulding process with a groove 23 which lies on the peripheral side approximately in the centre of the axial longitudinal extension of the separating piston 4 for the purpose of receiving a sealing ring 24. Whereas the guide piece 19 assumes the role of guiding the separating piston 4, the sealing ring 24 prevents the pressure medium from overflowing from the storage chamber 5 into the breathing chamber 6. The support piece 18 is therefore prevented from coming into contact with the pressure medium.
Moreover a helical compression spring 27 is accommodated in cylinder 1. The helical compression spring 27 engages the support piece 18 and is supported under pre-stress on the housing 2 of the cylinder 1 on the one side on the base 15 of the support piece 18 and on the other side indirectly by way of the closure cover 8 and the spring ring 9. The compression spring 27 supports the delivery of pressure medium accommodated in the storage chamber 5 and moves the separating piston 4 back into the starting position as illustrated.

Claims (8)

-8CLAIMS
1. A cylinder for accommodating pressure medium in a variable volume chamber for a hydraulic braking system in a motor vehicle, the cylinder having a separating piston which is longitudinally moveable in a cylinder bore and does not have a piston rod, the separating piston comprising a cup-shaped support piece made from steel plate having a base, a peripheral wall and a flange remote from the base, the piston further comprising a synthetic guide piece attached to the support piece and a sealing ring accommodated on the guide piece, wherein the guide piece covers the outer surface of the support piece facing the chamber and the guide piece is delimited by the flange which forms a stop surface remote from the base for the separating piston, the sealing ring fits in a groove on the outer periphery of the guide piece and a helical compression spring engages the support piece and is supported at one end by the base and at the other end indirectly on the cylinder housing.
2. A cylinder according to claim 1, wherein the guide piece comprises a thermoplastic which has a low linear thermal expansion coefficient and can be injection moulded.
3. A cylinder according to claim 2, in which the thermal expansion coefficient of the thermoplastic is 1 -9substantially equal to the thermal expansion coefficient of steel.
4. A cylinder according to claim 2 or 3, wherein the thermoplastic is a glass fibre-reinforced polyphenylene sulphide.
5. A cylinder according to claim 2, 3 or 4. in which the thermoplastic contains a filler such as graphite or polytetrofluoroethylene which promotes the sliding properties.
6. A cylinder according to any preAding claim. in which the support piece is manufactured by deepdrawing and is connected to the guide piece by means of injection moulding or by pressing or by the use of an adhesive.
7. A cylinder according to any preceding claim, in which the support piece comprises stainless steel.
8. A cylinder for accommodating pressure medium in a chamber. constructed and adapted substantially as hereinbefore described, with reference to and as illustrated in the accompanying drawing.
GB9301838A 1992-02-01 1993-01-29 Pressure accumulators eg for braking systems Withdrawn GB2263753A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924202905 DE4202905A1 (en) 1992-02-01 1992-02-01 CYLINDERS, ESPECIALLY PRESSURE MEDIA FOR HYDRAULIC BRAKE SYSTEMS

Publications (2)

Publication Number Publication Date
GB9301838D0 GB9301838D0 (en) 1993-03-17
GB2263753A true GB2263753A (en) 1993-08-04

Family

ID=6450776

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9301838A Withdrawn GB2263753A (en) 1992-02-01 1993-01-29 Pressure accumulators eg for braking systems

Country Status (3)

Country Link
JP (1) JPH05272501A (en)
DE (1) DE4202905A1 (en)
GB (1) GB2263753A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5618085A (en) * 1994-11-10 1997-04-08 Robert Bosch Gmbh Hydraulic housing block for hydraulic brake control of vehicle brakes
DE19616428A1 (en) * 1996-04-25 1997-10-30 Bosch Gmbh Robert Hydraulic reservoir for vehicle braking system
US7249808B2 (en) 2001-04-25 2007-07-31 Hitachi Unisia Automotive, Ltd. Brake liquid pressure control unit of on-vehicle device and its manufacturing method
US7427114B2 (en) 2001-04-25 2008-09-23 Hitachi, Ltd. Brake fluid pressure control unit for vehicle
WO2011038997A1 (en) * 2009-09-29 2011-04-07 Siemens Aktiengesellschaft Integrated hydraulic accumulator arrangement
CN103291907A (en) * 2012-02-22 2013-09-11 马涅蒂-马瑞利公司 Hydraulic servo-control of a servo-controlled gearbox
US8840196B2 (en) 2007-09-05 2014-09-23 Continental Teves Ag & Co. Ohg Brake system for a motor vehicle
EP2397701B1 (en) * 2010-06-17 2015-10-14 Carl Freudenberg KG Piston accumulator
CN105090137A (en) * 2014-05-20 2015-11-25 福特全球技术公司 Self-orienting piston spring accumulator
US10286811B2 (en) 2014-01-30 2019-05-14 Conti Temic Microelectronic Gmbh Device for pneumatically adjusting a seat in a transport means, in particular a motor vehicle
WO2021229322A1 (en) * 2020-04-20 2021-11-18 罗伯特·博世有限公司 Vehicle braking system and accumulator therefor

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4306222A1 (en) * 1992-10-09 1994-09-01 Teves Gmbh Alfred Hydraulic unit for slip-controlled brake systems
DE4412822A1 (en) * 1994-04-14 1995-10-19 Teves Gmbh Alfred Hydraulic brake system with slip control
EP0890494B1 (en) * 1996-05-30 2003-10-08 Lucas Industries Limited Accumulator
US5857753A (en) * 1996-09-20 1999-01-12 Itt Automotive Inc. Submersible cover for a low pressure accumulator
DE19651842A1 (en) * 1996-12-13 1998-06-18 Bosch Gmbh Robert Media separation device, in particular for hydraulic brake systems in vehicles
DE19725240A1 (en) * 1997-06-14 1998-12-17 Itt Mfg Enterprises Inc Pressure medium storage for hydraulic sets of vehicle electronic braking systems
DE19930967A1 (en) * 1999-07-05 2001-01-11 Continental Teves Ag & Co Ohg Seal for pressure source in car brake system has anti-spray protector for pressure-equalising cavity and is produced by mechanical forming
DE20209125U1 (en) * 2002-06-10 2003-10-16 Dichtungstechnik G. Bruss GmbH & Co. KG, 22955 Hoisdorf Sealed piston for gas pressure reservoir has Y-section sealing ring inserted in rectangular groove in Y-section edge of piston made of thermoplastic material
DE102004002266A1 (en) * 2004-01-16 2005-08-11 Hydac Technology Gmbh piston accumulators
DE102007056684B4 (en) * 2007-11-24 2016-02-18 Schaeffler Technologies AG & Co. KG accumulator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3247116A1 (en) * 1982-12-20 1984-06-20 FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt Master cylinder
EP0185165A1 (en) * 1984-11-30 1986-06-25 AlliedSignal Inc. Plastic master cylinder
WO1988008801A1 (en) * 1987-05-12 1988-11-17 Automotive Products Plc A piston assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3247116A1 (en) * 1982-12-20 1984-06-20 FAG Kugelfischer Georg Schäfer KGaA, 8720 Schweinfurt Master cylinder
EP0185165A1 (en) * 1984-11-30 1986-06-25 AlliedSignal Inc. Plastic master cylinder
WO1988008801A1 (en) * 1987-05-12 1988-11-17 Automotive Products Plc A piston assembly

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5618085A (en) * 1994-11-10 1997-04-08 Robert Bosch Gmbh Hydraulic housing block for hydraulic brake control of vehicle brakes
DE19616428A1 (en) * 1996-04-25 1997-10-30 Bosch Gmbh Robert Hydraulic reservoir for vehicle braking system
FR2748069A1 (en) * 1996-04-25 1997-10-31 Bosch Gmbh Robert HYDRAULIC ACCUMULATOR FOR A VEHICLE BRAKING SYSTEM
DE19616428B4 (en) * 1996-04-25 2005-03-10 Bosch Gmbh Robert Hydraulic storage for a vehicle brake system
US7249808B2 (en) 2001-04-25 2007-07-31 Hitachi Unisia Automotive, Ltd. Brake liquid pressure control unit of on-vehicle device and its manufacturing method
US7427114B2 (en) 2001-04-25 2008-09-23 Hitachi, Ltd. Brake fluid pressure control unit for vehicle
US8840196B2 (en) 2007-09-05 2014-09-23 Continental Teves Ag & Co. Ohg Brake system for a motor vehicle
RU2533863C2 (en) * 2009-09-29 2014-11-20 Сименс Акциенгезелльшафт Built-in hydraulic accumulator
CN102574515A (en) * 2009-09-29 2012-07-11 西门子公司 Integrated hydraulic accumulator arrangement
US8857472B2 (en) 2009-09-29 2014-10-14 Siemens Aktiengesellschaft Integrated hydraulic accumulator arrangement
CN102574515B (en) * 2009-09-29 2014-10-22 西门子公司 Integrated hydraulic accumulator arrangement
WO2011038997A1 (en) * 2009-09-29 2011-04-07 Siemens Aktiengesellschaft Integrated hydraulic accumulator arrangement
EP2397701B1 (en) * 2010-06-17 2015-10-14 Carl Freudenberg KG Piston accumulator
CN103291907A (en) * 2012-02-22 2013-09-11 马涅蒂-马瑞利公司 Hydraulic servo-control of a servo-controlled gearbox
US10286811B2 (en) 2014-01-30 2019-05-14 Conti Temic Microelectronic Gmbh Device for pneumatically adjusting a seat in a transport means, in particular a motor vehicle
CN105090137A (en) * 2014-05-20 2015-11-25 福特全球技术公司 Self-orienting piston spring accumulator
WO2021229322A1 (en) * 2020-04-20 2021-11-18 罗伯特·博世有限公司 Vehicle braking system and accumulator therefor

Also Published As

Publication number Publication date
DE4202905A1 (en) 1993-08-05
GB9301838D0 (en) 1993-03-17
JPH05272501A (en) 1993-10-19

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)