GB1409335A - Brakes - Google Patents

Brakes

Info

Publication number
GB1409335A
GB1409335A GB1714973A GB1714973A GB1409335A GB 1409335 A GB1409335 A GB 1409335A GB 1714973 A GB1714973 A GB 1714973A GB 1714973 A GB1714973 A GB 1714973A GB 1409335 A GB1409335 A GB 1409335A
Authority
GB
United Kingdom
Prior art keywords
wedge
sleeve
spring
roller carrier
wedge element
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
GB1714973A
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.)
Barr R H H
Centrax Ltd
Original Assignee
Barr R H H
Centrax 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 Barr R H H, Centrax Ltd filed Critical Barr R H H
Priority to GB1714973A priority Critical patent/GB1409335A/en
Publication of GB1409335A publication Critical patent/GB1409335A/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
    • 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
    • F16D65/22—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for pressing members apart, e.g. for drum 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
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/66—Wedges

Landscapes

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

Abstract

1409335 Wedge actuators; internal shoe drum brakes CENTRAX Ltd and R H H BARR 10 April 1974 [10 April 1973] 17149/73 Heading F2E A brake-operating mechanism comprises a pair of aligned transmission elements 11, 12, mounted in guide means 8, (integral with a spider 8a), a wedge element 21 having a wedge part 22 between the transmission elements, complementarily-inclined surfaces 15, 16 on the transmission elements and 19, 20 on the wedge part, a roller 35 or 36 between each transmission element and the wedge part 22, a coil spring 31 through which the wedge element 21 passes, and which biases the wedge element axially in one direction (to the right, as shown), and a roller carrier 39 which is supported on the spring 31. As shown, the roller carrier 39 has a sleeve portion 41 which is co-axial with and is supported by and within the spring. This sleeve constitutes a second portion of the roller carrier which has a pivotal connection with a first portion 42 of the roller carrier; the pivotal connection is afforded by an outwardly-facing surface 43 on the first portion 42 comprising at least part of a circle and engaging the interior surface of the sleeve; the surface 43 is axially slidable in the sleeve. The first portion 42 which actually carries the rollers 35, 36, is U- shaped, the free ends having notches 37, 38, for the rollers and the closed end forming the (annular) surface 43 through which stem 23 of wedge element 21 passes. The spring is located between a washer 34 abutting a surface 10 in guide means 8 and a disc 32 secured to stem 23. For brake application, wedge element 21 is moved leftwards (Fig. 2) by fluid pressure actuator 45, Fig. 1. In Fig. 3 (not shown) a separate sleeve portion 41 is omitted: instead, annular surface 43 is continued rightwards to form a part-spherical flange (53) for sliding and pivoting. In Fig. 4 (not shown) the closed end of portion 42 is omitted: instead, a sleeve engaging the spring has two parallel transverse members joined by a pivot which passes through the two limbs of portion 42 and, between them, the stem 23.
GB1714973A 1973-04-10 1973-04-10 Brakes Expired GB1409335A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1714973A GB1409335A (en) 1973-04-10 1973-04-10 Brakes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1714973A GB1409335A (en) 1973-04-10 1973-04-10 Brakes

Publications (1)

Publication Number Publication Date
GB1409335A true GB1409335A (en) 1975-10-08

Family

ID=10090146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1714973A Expired GB1409335A (en) 1973-04-10 1973-04-10 Brakes

Country Status (1)

Country Link
GB (1) GB1409335A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4369759A (en) * 1979-09-12 1983-01-25 Anschutz Gmbh Recoilless air weapon
EP0207660A2 (en) * 1985-07-01 1987-01-07 LUCAS INDUSTRIES public limited company Wedge-type brake actuator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4369759A (en) * 1979-09-12 1983-01-25 Anschutz Gmbh Recoilless air weapon
EP0207660A2 (en) * 1985-07-01 1987-01-07 LUCAS INDUSTRIES public limited company Wedge-type brake actuator
EP0207660A3 (en) * 1985-07-01 1987-05-20 LUCAS INDUSTRIES public limited company Wedge-type brake actuator

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee