GB680722A - Improvements in or relating to fluid pressure operated control systems - Google Patents
Improvements in or relating to fluid pressure operated control systemsInfo
- Publication number
- GB680722A GB680722A GB24397/49A GB2439749A GB680722A GB 680722 A GB680722 A GB 680722A GB 24397/49 A GB24397/49 A GB 24397/49A GB 2439749 A GB2439749 A GB 2439749A GB 680722 A GB680722 A GB 680722A
- Authority
- GB
- United Kingdom
- Prior art keywords
- undercarriage
- selector
- fluid pressure
- leg
- jack
- 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
- 239000012530 fluid Substances 0.000 title abstract 6
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D27/00—Arrangement or mounting of power plants in aircraft; Aircraft characterised by the type or position of power plants
- B64D27/02—Aircraft characterised by the type or position of power plants
- B64D27/023—Aircraft characterised by the type or position of power plants of rocket type, e.g. for assisting taking-off or braking
-
- 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
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
- F15B11/12—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action
- F15B11/121—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions
- F15B11/123—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor providing distinct intermediate positions; with step-by-step action providing distinct intermediate positions by means of actuators with fluid-operated stops
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
680,722. Undercarriages. ELECTRO-HYDRAULICS, Ltd., and PERDUE, J. Dec. 8, 1950. [Sept. 22, 1949] No. 24397/49. Class 4. [Also in Group XXIX] A steerable and castoring undercarriage leg 33 has pivotally connected thereto hydraulic jacks 31, 32 of the type wherein fluid pressure supplied to one or the other end of the jack cylinder moves the jack to one or the other end of its stroke while fluid pressure applied to both ends simultaneously moves the jack to an intermediate position (see Group XXIX). The hydraulic circuit comprises a storage tank 40, a pump 41, an undercarriage selector 52, and a steering selector 164. When the undercarriage selector is operated to feed pressure fluid to the undercarriage down line 53 the fluid will also flow through conduit 55 through valves 170 and 171 in the steering selector so that the leg 33 can be steered when the undercarriage is lowered. When the undercarriage selector 52 is selected for the raising of the undercarriage fluid pressure will pass from conduit 54 to conduit 56, through valves 169 and 172 and conduits 38 and 39 into the jacks 31 and 32 to act on both sides of each jack and thus centre the leg 33. If it is desired to allow for castoring over 360 degrees the jacks may be pivotally mounted opposite each other and be connected to a common pivot 8 on the leg 33. Specification 650,878 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB24397/49A GB680722A (en) | 1949-09-22 | 1949-09-22 | Improvements in or relating to fluid pressure operated control systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB24397/49A GB680722A (en) | 1949-09-22 | 1949-09-22 | Improvements in or relating to fluid pressure operated control systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB680722A true GB680722A (en) | 1952-10-08 |
Family
ID=10211095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24397/49A Expired GB680722A (en) | 1949-09-22 | 1949-09-22 | Improvements in or relating to fluid pressure operated control systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB680722A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0064641A2 (en) * | 1981-05-11 | 1982-11-17 | WABCO Westinghouse Fahrzeugbremsen GmbH | Gear-change cylinder with three positions |
| EP1086295A2 (en) * | 1998-06-15 | 2001-03-28 | Trw Inc. | Self-centering motor |
-
1949
- 1949-09-22 GB GB24397/49A patent/GB680722A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0064641A2 (en) * | 1981-05-11 | 1982-11-17 | WABCO Westinghouse Fahrzeugbremsen GmbH | Gear-change cylinder with three positions |
| EP0064641A3 (en) * | 1981-05-11 | 1983-07-20 | Wabco Westinghouse Fahrzeugbremsen Gmbh | Gear-change cylinder with three positions |
| EP1086295A2 (en) * | 1998-06-15 | 2001-03-28 | Trw Inc. | Self-centering motor |
| EP1086295A4 (en) * | 1998-06-15 | 2007-05-02 | Trw Automotive Us Llc | Self-centering motor |
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