GB902391A - Double-acting master cylinder - Google Patents

Double-acting master cylinder

Info

Publication number
GB902391A
GB902391A GB195258A GB195258A GB902391A GB 902391 A GB902391 A GB 902391A GB 195258 A GB195258 A GB 195258A GB 195258 A GB195258 A GB 195258A GB 902391 A GB902391 A GB 902391A
Authority
GB
United Kingdom
Prior art keywords
cylinder
piston
pistons
fixed
bore
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
GB195258A
Inventor
Henry James Butler
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.)
Dunlop Rubber Co Ltd
Original Assignee
Dunlop Rubber Co 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 Dunlop Rubber Co Ltd filed Critical Dunlop Rubber Co Ltd
Priority to GB195258A priority Critical patent/GB902391A/en
Publication of GB902391A publication Critical patent/GB902391A/en
Expired 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
    • F16D55/46—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member with self-tightening action
    • F16D55/50—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member with self-tightening action with auxiliary friction members, which may be of different type, producing the self-tightening action
    • 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
    • F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
    • F16D51/46—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action
    • F16D51/66—Self-tightening brakes with pivoted brake shoes, i.e. the braked member increases the braking action an actuated brake-shoe being carried along and thereby engaging a member for actuating another brake-shoe

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
  • Actuator (AREA)

Abstract

902,391. Fluid-pressure brakes. DUNLOP RUBBER CO. Ltd. Dec. 18, 1958 [Jan. 21, 1958], No. 1952/58. Class 103 (1). A master cylinder comprises a cylinder 1 movable axially in either of two opposite directions, and a pair of spaced pistons 14, 15, either of which is movable by the cylinder towards the other piston to pressurize fluid therebetween on either direction of movement of the cylinder. The cylinder 1, having inlets 2, 4 and outlet 3, is formed with spaced webs 5 through which pass guiderods 8 fixed at one end to fixed member 9 and at the other end to a fixed resilient bush 13. The web nearest member 9 has a bored lug 6 containing pin 10 carrying levers 11 to which an actuating member, e.g. a band-brake, is fixed. The pistons 14, 15 are each formed with a nose 21 and an extension 29 abutting member 9 and bush 13 in the normal position, the pistons being retained in cylinder 1 by rings 16 and dustexcluding gaiters 18 protect the ends of the cylinder. One end 28 of a rod 27 is retained in bore 22 in piston 14 by a cup 24 and the other end carries valve member 30 and is retained adjacent a bore 23 in piston 15 by a cup 31, the cups and pistons being separated by a spring 25 and bore 23 being connected to inlet port 4 via passage 26 and the piston waist. In operation, movement of levers 11 to the right results in piston 15 being fixed and piston 14 being carried by cylinder 1 to the right, the rod 27 and valve 30 closing bore 23, the spring 25 being compressed and fluid expelled from cylinder 1 via port 3 to the brakes. Movement of levers 11 to the left results in piston 14 being fixed and piston 15 moving with the cylinder 1. The spring 25 returns the pistons and cylinder to the normal position on brake release, the valve 30 being moved from bore 23. Im Figs. 4-6, not shown, a similar master cylinder is actuated by a band-brake and the outlet 4 is connected to a disc brake, the ends of the pistons being connected to external return-springs. In a further embodiment in the Provisional Specification, the master cylinder has a single piston with a lost-motion connection between the piston and cylinder and between the piston and a fixed member, these lost-motion connections permitting only the piston or cylinder to be moved according to the direction of movement of the actuating member. The master cylinder is returned to its normal position by admitting pneumatic pressure to a ram or by springs.
GB195258A 1958-01-21 1958-01-21 Double-acting master cylinder Expired GB902391A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB195258A GB902391A (en) 1958-01-21 1958-01-21 Double-acting master cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB195258A GB902391A (en) 1958-01-21 1958-01-21 Double-acting master cylinder

Publications (1)

Publication Number Publication Date
GB902391A true GB902391A (en) 1962-08-01

Family

ID=9730942

Family Applications (1)

Application Number Title Priority Date Filing Date
GB195258A Expired GB902391A (en) 1958-01-21 1958-01-21 Double-acting master cylinder

Country Status (1)

Country Link
GB (1) GB902391A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504877A1 (en) * 1981-05-04 1982-11-05 Teves Gmbh Alfred MASTER CYLINDER FOR HYDRAULIC BRAKES OF A MOTOR VEHICLE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504877A1 (en) * 1981-05-04 1982-11-05 Teves Gmbh Alfred MASTER CYLINDER FOR HYDRAULIC BRAKES OF A MOTOR VEHICLE

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