GB1222948A - Double circuit master cylinder for brake systems of automotive vehicles - Google Patents

Double circuit master cylinder for brake systems of automotive vehicles

Info

Publication number
GB1222948A
GB1222948A GB1546669A GB1546669A GB1222948A GB 1222948 A GB1222948 A GB 1222948A GB 1546669 A GB1546669 A GB 1546669A GB 1546669 A GB1546669 A GB 1546669A GB 1222948 A GB1222948 A GB 1222948A
Authority
GB
United Kingdom
Prior art keywords
piston
groove
switch
cylinder
master cylinder
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.)
Expired
Application number
GB1546669A
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.)
HEINKEL AG ERNST
Ernst Heinkel AG
Original Assignee
HEINKEL AG ERNST
Ernst Heinkel AG
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 HEINKEL AG ERNST, Ernst Heinkel AG filed Critical HEINKEL AG ERNST
Publication of GB1222948A publication Critical patent/GB1222948A/en
Expired 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
    • B60T17/226—Devices for monitoring or checking brake systems; Signal devices using devices being responsive to the difference between the fluid pressions in conduits of multiple braking 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
    • B60T11/16—Master control, e.g. master cylinders
    • B60T11/20—Tandem, side-by-side, or other multiple master cylinder units

Abstract

1,222,948. Fluid pressure operated brakes; brake failure indicators. ERNST HEINKEL A.G. 25 March, 1969 [1 April, 1968], No. 15466/69. Headings F2E and F2F. A double circuit master cylinder for braking systems of automotive vehicles comprises two pistons 6, 7 actuated directly by a brake pedal 5 to vary the volumes of their respective working chambers 2, 3. The chambers 2, 3 communicate with opposite ends of a compensating piston 24 which works in a cylinder, the compensating piston being preferably spring loaded to a central position in the cylinder. A spring loaded, preferably manually retractable pin 34 works in a groove 35 in the piston 24 and enters one or two hollows 36 formed at the ends of the groove should one of the hydraulic circuits fail to lock the piston in an end position. The piston 24 may also be provided with a further groove having tapered end portions, a switch actuating pin riding in the groove and actuating the switch on an unbalance occurring in the circuits (Fig. 2, not shown). The switch may trigger off a visible or audible warning. The pin 34 may be reset after an hydraulic circuit has been repaired by a magnetic or electric resetting device.
GB1546669A 1968-04-01 1969-03-25 Double circuit master cylinder for brake systems of automotive vehicles Expired GB1222948A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT317268A AT286122B (en) 1968-04-01 1968-04-01 Dual circuit main cylinder

Publications (1)

Publication Number Publication Date
GB1222948A true GB1222948A (en) 1971-02-17

Family

ID=3546449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1546669A Expired GB1222948A (en) 1968-04-01 1969-03-25 Double circuit master cylinder for brake systems of automotive vehicles

Country Status (4)

Country Link
AT (1) AT286122B (en)
DE (1) DE1915015A1 (en)
FR (1) FR2005266A1 (en)
GB (1) GB1222948A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2186375B1 (en) * 1971-01-15 1976-06-18 Dba
FR2430875A1 (en) * 1978-07-12 1980-02-08 Dba TANDEM MASTER CYLINDER
DE102011086916A1 (en) * 2010-11-29 2012-05-31 Continental Teves Ag & Co. Ohg Brake system for motor vehicles

Also Published As

Publication number Publication date
AT286122B (en) 1970-11-25
FR2005266A1 (en) 1969-12-12
DE1915015A1 (en) 1969-10-23

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