GB1223568A - Improvements in or relating to fluid pressure actuated motors - Google Patents

Improvements in or relating to fluid pressure actuated motors

Info

Publication number
GB1223568A
GB1223568A GB58495/67A GB5849567A GB1223568A GB 1223568 A GB1223568 A GB 1223568A GB 58495/67 A GB58495/67 A GB 58495/67A GB 5849567 A GB5849567 A GB 5849567A GB 1223568 A GB1223568 A GB 1223568A
Authority
GB
United Kingdom
Prior art keywords
piston
pistons
fluid pressure
outer cylindrical
supply
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
GB58495/67A
Inventor
Richard Thomas Fowler
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.)
Girling Ltd
Original Assignee
Girling 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 Girling Ltd filed Critical Girling Ltd
Priority to GB58495/67A priority Critical patent/GB1223568A/en
Priority to US780415A priority patent/US3547004A/en
Priority to DE19681812699 priority patent/DE1812699A1/en
Priority to JP43092064A priority patent/JPS4949334B1/ja
Priority to FR1602570D priority patent/FR1602570A/fr
Publication of GB1223568A publication Critical patent/GB1223568A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/036—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of servomotors having a plurality of working chambers
    • F15B11/0365—Tandem constructions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/10—Characterised by the construction of the motor unit the motor being of diaphragm type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S148/00—Metal treatment
    • Y10S148/006—Apparatus

Abstract

1,223,568. Fluid pressure actuators. GIRLING Ltd. Nov.26, 1968 [Dec.22, 1967], No.58495/67. Heading F1P. [Also in Division F2] In a fluid pressure actuated motor, particularly for a dual braking system (Division F2), at least two pistons 18, 20 are coupled together in tandem and work in separate cylinder spaces formed in outer cylindrical wall portions, 10, 64, the outer cylindrical wall portion 64 being encircled over a part of its axial length by the outer cylindrical wall portion 10 and the cylinder spaces are separated by a fixed wall 12. The pistons 18, 20 are connected by a stem portion 29 forming part of a pressure member 30 which passes through the fixed dividing wall 12 between the chambers 22 and 24 which are open to atmosphere and the stem abuts against a thrust pad 34 welded to the back face of the piston 18. A force transmitting element 44 extends from the piston 18 and has connected thereto a force transmitting push rod 42 which extends through a central aperture 40 in an end wall 14 of the motor casing. In operation, when compressed air is fed into the chambers 26 and 28 a pressure differential is created across the pistons 18 and 20 which move in opposition to a return spring 52 to displace the push rod 42 outwardly to actuate the vehicle brakes. When used in conjunction with a dual braking system the inlets 56 and 58 are each connected to separate pressure sources such that failure of one source of supply will not cause a complete failure. Should the supply to the rear cylinder fail, the forward piston 18 can move forwardly on its own leaving the rear piston behind and if the supply to the forward cylinder fails the rear piston can move forwardly pushing the forward piston ahead of it. Instead of being operated by compressed air the motor can be modified so as to be vacuum operated or hydraulically operated.
GB58495/67A 1967-12-22 1967-12-22 Improvements in or relating to fluid pressure actuated motors Expired GB1223568A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB58495/67A GB1223568A (en) 1967-12-22 1967-12-22 Improvements in or relating to fluid pressure actuated motors
US780415A US3547004A (en) 1967-12-22 1968-12-02 Fluid pressure actuated motors
DE19681812699 DE1812699A1 (en) 1967-12-22 1968-12-04 A motor that is operated by a pressurized flow medium
JP43092064A JPS4949334B1 (en) 1967-12-22 1968-12-17
FR1602570D FR1602570A (en) 1967-12-22 1968-12-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB58495/67A GB1223568A (en) 1967-12-22 1967-12-22 Improvements in or relating to fluid pressure actuated motors

Publications (1)

Publication Number Publication Date
GB1223568A true GB1223568A (en) 1971-02-24

Family

ID=10481766

Family Applications (1)

Application Number Title Priority Date Filing Date
GB58495/67A Expired GB1223568A (en) 1967-12-22 1967-12-22 Improvements in or relating to fluid pressure actuated motors

Country Status (5)

Country Link
US (1) US3547004A (en)
JP (1) JPS4949334B1 (en)
DE (1) DE1812699A1 (en)
FR (1) FR1602570A (en)
GB (1) GB1223568A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3926094A (en) * 1973-07-02 1975-12-16 Midland Ross Corp Air operated spring brake
JPS5330090U (en) * 1976-08-21 1978-03-15
JPS5987360U (en) * 1982-12-03 1984-06-13 アイシン精機株式会社 Tandem type brake booster
GB8513553D0 (en) * 1985-05-29 1985-07-03 Davy Mckee Poole Hydraulic ram assembly
JPS6269636U (en) * 1985-10-22 1987-05-01
JP4495633B2 (en) * 2005-04-05 2010-07-07 日信工業株式会社 Vehicle disc brake
FR2963900B1 (en) * 2010-08-18 2013-05-17 Stephane Cocher DEVICE FOR INCREASING THE CLAMPING EFFORT PROVIDED BY CYLINDERS ON A REDUCED PROJECTED SURFACE
US20140260949A1 (en) * 2013-03-15 2014-09-18 Tse Brakes, Inc. Double service chamber pneumatic actuator

Also Published As

Publication number Publication date
US3547004A (en) 1970-12-15
DE1812699A1 (en) 1969-07-03
JPS4949334B1 (en) 1974-12-26
FR1602570A (en) 1970-12-28

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