GB597890A - Improvements in or relating to controls for fluid pressure power devices - Google Patents
Improvements in or relating to controls for fluid pressure power devicesInfo
- Publication number
- GB597890A GB597890A GB2549944A GB2549944A GB597890A GB 597890 A GB597890 A GB 597890A GB 2549944 A GB2549944 A GB 2549944A GB 2549944 A GB2549944 A GB 2549944A GB 597890 A GB597890 A GB 597890A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conduit
- valve
- piston
- chamber
- chambers
- 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
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
- F15B17/00—Combinations of telemotor and servomotor 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
- B60T13/24—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
- B60T13/241—Differential pressure systems
- B60T13/242—The control valve is provided as one unit with the servomotor cylinder
- B60T13/245—Hydraulic command of the control valve, hydraulic transmission to the brake
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Braking Systems And Boosters (AREA)
Abstract
597,890. Controls for fluid-pressure power devices. BENDIX AVIATION CORPORATION. Dec. 19, 1944, No. 25499. Convention date, Jan. 24. [Class 103 (i)] In a braking system comprising a pedal operated master cylinder 12 which controls high and low pressure conduits to a power cylinder 24 the piston of which actuates the auxiliary master cylinder piston 22, a valve 82 is provided which admits fluid at high pressure directly to the power cylinder working space when the speed of operation is such as to cause a considerable. pressure drop between the inlet valve chamber and the power cylinder. As shown the high and low pressure fluids are atmospheric air and vacuum respectively. Chambers 38, 40 of the tandem piston cylinder 24 are permanently in connection with vacuum through passage 66 and conduit 34. Chambers 44, 42 are interconnected by orifices 48 and the hollow sleeve 50 and are in communication through a conduit 52 with the valve chamber 54 which in the position shown is connected to vacuum through a central orifice in the diaphragm 60, openings 62 in the member 64, passage 66 and the conduit 34. Operation, of the self-lapping inlet valve 72 and the exhaust valve 70 by the piston 58 controlled hydraulically from master cylinder 12 charges the valve chamber 54 with air which passes through the conduit 52 to chambers 44 and 42 so that piston 22 in auxiliary master cylinder 20 is moved by thrust rod 26 rigid with the pistons 28 and 30 to operate the brakes. In rapid braking a fast application valve 82 admits air directly to chamber 42 when the pressure difference between chambers 54 and 42 exceeds a predetermined limit. Space 88 is connected through a conduit 86 to chamber 54 while space 92 is connected through a conduit 90 to chamber 42. When the difference between these pressures acting on diaphragm 84 is sufficient to overcome the spring 112 the poppet 96 is opened to admit air directly through passages 104, 102 and 98. The valve 82 is closed during brake release.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US519533A US2393524A (en) | 1943-10-04 | 1944-01-24 | Control for fluid pressure power devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB597890A true GB597890A (en) | 1948-02-05 |
Family
ID=24068715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2549944A Expired GB597890A (en) | 1944-01-24 | 1944-12-19 | Improvements in or relating to controls for fluid pressure power devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB597890A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3542602A1 (en) * | 1985-12-03 | 1987-06-04 | Teves Gmbh Alfred | Brake pressure transmitter for a motor vehicle hydraulic brake system |
| CN112875794A (en) * | 2021-02-09 | 2021-06-01 | 重庆工程职业技术学院 | Water source purification device based on composite photocatalyst |
-
1944
- 1944-12-19 GB GB2549944A patent/GB597890A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3542602A1 (en) * | 1985-12-03 | 1987-06-04 | Teves Gmbh Alfred | Brake pressure transmitter for a motor vehicle hydraulic brake system |
| CN112875794A (en) * | 2021-02-09 | 2021-06-01 | 重庆工程职业技术学院 | Water source purification device based on composite photocatalyst |
| CN112875794B (en) * | 2021-02-09 | 2022-12-27 | 重庆工程职业技术学院 | Water source purification device based on composite photocatalyst |
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