FR2449568A1 - Servomoteur hydraulique a rapport variable comportant une chambre a purge automatique - Google Patents

Servomoteur hydraulique a rapport variable comportant une chambre a purge automatique

Info

Publication number
FR2449568A1
FR2449568A1 FR8003914A FR8003914A FR2449568A1 FR 2449568 A1 FR2449568 A1 FR 2449568A1 FR 8003914 A FR8003914 A FR 8003914A FR 8003914 A FR8003914 A FR 8003914A FR 2449568 A1 FR2449568 A1 FR 2449568A1
Authority
FR
France
Prior art keywords
chamber
ratio
fluid
report
piston
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.)
Granted
Application number
FR8003914A
Other languages
English (en)
French (fr)
Other versions
FR2449568B1 (en, 2012
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.)
Motors Liquidation Co
Original Assignee
General Motors Corp
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 General Motors Corp filed Critical General Motors Corp
Publication of FR2449568A1 publication Critical patent/FR2449568A1/fr
Application granted granted Critical
Publication of FR2449568B1 publication Critical patent/FR2449568B1/fr
Granted 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
    • 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
    • B60T13/142—Systems with master cylinder
    • B60T13/143—Master cylinder mechanically coupled with booster
    • B60T13/144—Pilot valve provided inside booster piston

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Braking Arrangements (AREA)
  • Control Of Fluid Gearings (AREA)
FR8003914A 1979-02-22 1980-02-22 Servomoteur hydraulique a rapport variable comportant une chambre a purge automatique Granted FR2449568A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/013,826 US4241642A (en) 1979-02-22 1979-02-22 Hydraulic ratio changing booster with self-venting chamber

Publications (2)

Publication Number Publication Date
FR2449568A1 true FR2449568A1 (fr) 1980-09-19
FR2449568B1 FR2449568B1 (en, 2012) 1983-03-25

Family

ID=21761961

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8003914A Granted FR2449568A1 (fr) 1979-02-22 1980-02-22 Servomoteur hydraulique a rapport variable comportant une chambre a purge automatique

Country Status (4)

Country Link
US (1) US4241642A (en, 2012)
DE (1) DE3006200A1 (en, 2012)
FR (1) FR2449568A1 (en, 2012)
GB (1) GB2043191B (en, 2012)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4294071A (en) * 1979-12-12 1981-10-13 Midland-Ross Corporation Hydraulic booster travel ratio check valve
GB2104605B (en) * 1981-07-04 1985-03-06 Lucas Ind Plc Hydraulic boosters for vehicle braking systems
US4586591A (en) * 1983-10-21 1986-05-06 Itt Industries, Inc. Pressure-fluid-operable vehicle brake system
DE3542418A1 (de) * 1985-11-30 1987-06-04 Teves Gmbh Alfred Hydraulischer kraftverstaerker
DE3725249A1 (de) * 1987-07-30 1989-02-09 Teves Gmbh Alfred Hydraulischer kraftverstaerker
DE4438163A1 (de) * 1994-10-26 1996-05-02 Teves Gmbh Alfred Hydraulikaggregat

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2138959A1 (en, 2012) * 1971-05-25 1973-01-05 Bendix Gmbh
US3733966A (en) * 1971-03-24 1973-05-22 Bendix Corp Hydraulic power brake booster
DE2215752A1 (de) * 1972-03-30 1973-10-11 Bendix Gmbh Kraftverstaerkungsvorrichtung
FR2209902A2 (en, 2012) * 1971-05-25 1974-07-05 Bendix Gmbh
US3988967A (en) * 1975-07-10 1976-11-02 The Weatherhead Company Brake booster with hydraulic ratio changer
US4007665A (en) * 1975-11-28 1977-02-15 The Weatherhead Company Brake booster with improved pedal feel characteristics

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915066A (en) * 1972-12-08 1975-10-28 Bendix Gmbh Power boost mechanism

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3733966A (en) * 1971-03-24 1973-05-22 Bendix Corp Hydraulic power brake booster
FR2138959A1 (en, 2012) * 1971-05-25 1973-01-05 Bendix Gmbh
FR2209902A2 (en, 2012) * 1971-05-25 1974-07-05 Bendix Gmbh
DE2215752A1 (de) * 1972-03-30 1973-10-11 Bendix Gmbh Kraftverstaerkungsvorrichtung
US3988967A (en) * 1975-07-10 1976-11-02 The Weatherhead Company Brake booster with hydraulic ratio changer
US4007665A (en) * 1975-11-28 1977-02-15 The Weatherhead Company Brake booster with improved pedal feel characteristics

Also Published As

Publication number Publication date
US4241642A (en) 1980-12-30
GB2043191B (en) 1982-11-03
FR2449568B1 (en, 2012) 1983-03-25
DE3006200A1 (de) 1980-09-04
GB2043191A (en) 1980-10-01

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Legal Events

Date Code Title Description
ST Notification of lapse