GB1099402A - Improvements in disc brakes - Google Patents

Improvements in disc brakes

Info

Publication number
GB1099402A
GB1099402A GB1091264A GB1091264A GB1099402A GB 1099402 A GB1099402 A GB 1099402A GB 1091264 A GB1091264 A GB 1091264A GB 1091264 A GB1091264 A GB 1091264A GB 1099402 A GB1099402 A GB 1099402A
Authority
GB
United Kingdom
Prior art keywords
piston
stage
spaces
pistons
pressure
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
GB1091264A
Inventor
Peter Spence
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.)
Dowty Technical Developments Ltd
Original Assignee
Dowty Technical Developments Ltd
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 Dowty Technical Developments Ltd filed Critical Dowty Technical Developments Ltd
Priority to GB1091264A priority Critical patent/GB1099402A/en
Publication of GB1099402A publication Critical patent/GB1099402A/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
    • 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
    • B60T11/224—Master control, e.g. master cylinders with pressure-varying means, e.g. with two stage operation provided by use of different piston diameters including continuous variation from one diameter to another
    • 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
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes
    • 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
    • F16D2121/00—Type of actuator operation force
    • F16D2121/02—Fluid pressure
    • 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
    • F16D2125/10—Plural pistons interacting by fluid pressure, e.g. hydraulic force amplifiers using different sized pistons
    • 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
    • F16D2127/00—Auxiliary mechanisms
    • F16D2127/007—Auxiliary mechanisms for non-linear operation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)

Abstract

1,099,402. Disc brakes. DOWTY TECHNICAL DEVELOPMENTS Ltd. March 12, 1965 [March 14, 1964], No. 10912/64. Headings F2E and F2F. A spot-type disc brake comprises at least one piston-and-cylinder hydraulic device of the two-stage type in which an increased hydraulic pressure acting on a first-stage piston is generated by a second-stage differential piston. As shown, brake pads 14, 15 are moved into contact with a brake disc 16 by hydraulic pressure from a master cylinder 36 acting on first-stage pistons 17 against tension springs 20. At low pressures, the hydraulic fluid passes directly to spaces 25 behind the first pistons through passages 33, 34, past ball valves 28 which are held open by rods 29 secured to a common casing 18, and through bores 26 in second-stage pistons 21. When the pressure increases further the second-stage pistons are deflected against compression springs 30, enabling springs 31 to close the ball valves, thus interrupting the direct fluid connection between the master cylinder and the spaces 25. Further increase in fluid pressure moves the second-stage pistons 21 further inwards, moving piston-rods 23 into the spaces 25 and thereby the pressure in the spaces 25 to increase more rapidly than the master cylinder pressure due to the difference in area between each piston 21 and its piston-rod 23. In another embodiment (not shown), a single piston and cylinder may operate a floating-calliper type of disc brake.
GB1091264A 1964-03-14 1964-03-14 Improvements in disc brakes Expired GB1099402A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1091264A GB1099402A (en) 1964-03-14 1964-03-14 Improvements in disc brakes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1091264A GB1099402A (en) 1964-03-14 1964-03-14 Improvements in disc brakes

Publications (1)

Publication Number Publication Date
GB1099402A true GB1099402A (en) 1968-01-17

Family

ID=9976584

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1091264A Expired GB1099402A (en) 1964-03-14 1964-03-14 Improvements in disc brakes

Country Status (1)

Country Link
GB (1) GB1099402A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4712654A (en) * 1986-12-09 1987-12-15 Allied Corporation Brake assembly with multiple adjustability
US4867280A (en) * 1983-07-26 1989-09-19 Alfred Teves Gmbh Hydraulically actuated wheel brake
ITGE20120051A1 (en) * 2012-05-14 2013-11-15 Giovanni Landro BRAKING SYSTEM ALWAYS READY
CN110979272A (en) * 2019-12-31 2020-04-10 曹延香 Intelligent automobile emergency braking system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4867280A (en) * 1983-07-26 1989-09-19 Alfred Teves Gmbh Hydraulically actuated wheel brake
US4712654A (en) * 1986-12-09 1987-12-15 Allied Corporation Brake assembly with multiple adjustability
ITGE20120051A1 (en) * 2012-05-14 2013-11-15 Giovanni Landro BRAKING SYSTEM ALWAYS READY
CN110979272A (en) * 2019-12-31 2020-04-10 曹延香 Intelligent automobile emergency braking system

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