GB1450100A - Actuating force generating devices - Google Patents

Actuating force generating devices

Info

Publication number
GB1450100A
GB1450100A GB530276A GB530276A GB1450100A GB 1450100 A GB1450100 A GB 1450100A GB 530276 A GB530276 A GB 530276A GB 530276 A GB530276 A GB 530276A GB 1450100 A GB1450100 A GB 1450100A
Authority
GB
United Kingdom
Prior art keywords
piston
pistons
chambers
container
rod
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
GB530276A
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.)
Tokico Ltd
Original Assignee
Tokico 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 Tokico Ltd filed Critical Tokico Ltd
Publication of GB1450100A publication Critical patent/GB1450100A/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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/26—Compressed-air 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/22—Brakes applied by springs or weights and released hydraulically

Abstract

1450100 Hydraulic actuators TOKICO Ltd 19 Oct 1973 [23 Oct 1972] 05302/76 Divided out of 1450099 Heading F1D [Also in Division F2] An actuating-force generating-device comprises a multi-stage cylinder body 1 having a plurality of cylinders 2, 3, of different diameters and arranged in series, a plurality of pistons 4, 6, the same in number as the cylinders and slidable respectively therein, a piston-rod 8 fixed to the foremost piston 4 and having an actuating end projecting from the forward end of the cylinder body 1, a container 12' provided at the rear end of the cylinder body, a fluid port 19 or 20 in the forward end of each cylinder and intended for introducing hydraulic fluid or discharging it, one or more connecting rods 16 inter-connecting the pistons, and resilient means (e.g. compressed gas) within the container 12' and adapted to urge the rearmost piston, and thereby the piston-rod 8, forwardly. Each of the fluid ports 19, 20 may be selectively connected to a source of hydraulic fluid under pressure such as a pump and a tank (not shown) through electromagnetic valves (not shown). Preferably a vehicle brake is actuated by pistonrod 8. In operation, for normal running, both chambers 11, 14 to the left of pistons 4 and 6 respectively are pressurized, the brake being thereby released. When a slow stop for the vehicle is required, the electromagnetic valves are actuated to permit fluid to flow to the tank rapidly from one of the chambers 11, 14 and at a restricted rate from the other one, so the piston-rod 8 is moved relatively slowly to the left by the gas under pressure in container 12'. When a sudden stop is required, both chambers 11, 14 are evacuated rapidly. An alternative use for the invention is in a press machine.
GB530276A 1972-10-23 1973-10-19 Actuating force generating devices Expired GB1450100A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10594472A JPS4963880A (en) 1972-10-23 1972-10-23

Publications (1)

Publication Number Publication Date
GB1450100A true GB1450100A (en) 1976-09-22

Family

ID=14420943

Family Applications (1)

Application Number Title Priority Date Filing Date
GB530276A Expired GB1450100A (en) 1972-10-23 1973-10-19 Actuating force generating devices

Country Status (2)

Country Link
JP (1) JPS4963880A (en)
GB (1) GB1450100A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000227A (en) * 1977-06-10 1979-01-04 Jungheinrich Kg Hydraulic lifting device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2000227A (en) * 1977-06-10 1979-01-04 Jungheinrich Kg Hydraulic lifting device
GB2000227B (en) * 1977-06-10 1982-02-24 Jungheinrich Kg Hydraulic lifting device

Also Published As

Publication number Publication date
JPS4963880A (en) 1974-06-20

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee