GB449876A - Improvements relating to hydraulic locking devices more particularly for aircraft undercarriage or other controls, or like purposes - Google Patents
Improvements relating to hydraulic locking devices more particularly for aircraft undercarriage or other controls, or like purposesInfo
- Publication number
- GB449876A GB449876A GB24435A GB24435A GB449876A GB 449876 A GB449876 A GB 449876A GB 24435 A GB24435 A GB 24435A GB 24435 A GB24435 A GB 24435A GB 449876 A GB449876 A GB 449876A
- Authority
- GB
- United Kingdom
- Prior art keywords
- locking devices
- hydraulic locking
- purposes
- controls
- aircraft undercarriage
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C25/00—Alighting gear
- B64C25/02—Undercarriages
- B64C25/08—Undercarriages non-fixed, e.g. jettisonable
- B64C25/10—Undercarriages non-fixed, e.g. jettisonable retractable, foldable, or the like
- B64C25/18—Operating mechanisms
- B64C25/22—Operating mechanisms fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Actuator (AREA)
Abstract
449,876. Hydraulic locking devices. DOWTY, G. H., 17, Lansdown Crescent, Cheltenham, Gloucestershire. Jan. 3, 1935, No. 244. [Class 4] [See also Groups XXIX, XXV, and XXX] Means for retracting an aircraft undercarriage comprises a device operated in one direction only by hydraulic pressure and in the other by gravity or a mechanical force. A cylinder B connected at one end to a pipe line C and at the other to a non-return valve H, which normally prevents escape of liquid from the cylinder and thus prevents movement of the piston A in one direction. When there is pressure in the line C, it acts through a byepass on a plunger F which opens the valve H to permit the piston to be moved by the pressure. A reservoir L is fitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB24435A GB449876A (en) | 1935-01-03 | 1935-01-03 | Improvements relating to hydraulic locking devices more particularly for aircraft undercarriage or other controls, or like purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB24435A GB449876A (en) | 1935-01-03 | 1935-01-03 | Improvements relating to hydraulic locking devices more particularly for aircraft undercarriage or other controls, or like purposes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB449876A true GB449876A (en) | 1936-07-03 |
Family
ID=9700962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24435A Expired GB449876A (en) | 1935-01-03 | 1935-01-03 | Improvements relating to hydraulic locking devices more particularly for aircraft undercarriage or other controls, or like purposes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB449876A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE739681C (en) * | 1937-04-05 | 1943-10-01 | Olaer Patent Co | System for driving work cells, in particular adjusting struts in aircraft |
| US3074384A (en) * | 1959-07-08 | 1963-01-22 | John S Pilch | Pilot-operated ball check valve in cylinder head |
| US3196755A (en) * | 1962-12-14 | 1965-07-27 | Clark Equipment Co | Flow control system for loadhandling apparatus |
| US5960814A (en) * | 1997-09-12 | 1999-10-05 | Ngt, Llc. | Counter balanced locking valve |
| US8262058B2 (en) | 2008-08-28 | 2012-09-11 | Kot Norbert J | Balanced pilot operated check valve |
| US9611871B2 (en) | 2013-09-13 | 2017-04-04 | Norbert J. Kot | Pneumatic valve assembly and method |
| GB2586639A (en) * | 2019-08-30 | 2021-03-03 | Airbus Operations Ltd | Hydraulic actuation system for an aircraft |
| GB2586790A (en) * | 2019-08-30 | 2021-03-10 | Airbus Operations Ltd | Aircraft hydraulic actuation system |
-
1935
- 1935-01-03 GB GB24435A patent/GB449876A/en not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE739681C (en) * | 1937-04-05 | 1943-10-01 | Olaer Patent Co | System for driving work cells, in particular adjusting struts in aircraft |
| US3074384A (en) * | 1959-07-08 | 1963-01-22 | John S Pilch | Pilot-operated ball check valve in cylinder head |
| US3196755A (en) * | 1962-12-14 | 1965-07-27 | Clark Equipment Co | Flow control system for loadhandling apparatus |
| US5960814A (en) * | 1997-09-12 | 1999-10-05 | Ngt, Llc. | Counter balanced locking valve |
| US8262058B2 (en) | 2008-08-28 | 2012-09-11 | Kot Norbert J | Balanced pilot operated check valve |
| US9611871B2 (en) | 2013-09-13 | 2017-04-04 | Norbert J. Kot | Pneumatic valve assembly and method |
| GB2586639A (en) * | 2019-08-30 | 2021-03-03 | Airbus Operations Ltd | Hydraulic actuation system for an aircraft |
| GB2586790A (en) * | 2019-08-30 | 2021-03-10 | Airbus Operations Ltd | Aircraft hydraulic actuation system |
| US12195171B2 (en) | 2019-08-30 | 2025-01-14 | Airbus Operations Limited | Aircraft hydraulic actuation system with chambers for hydraulic fluid |
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