GB549773A - Improvements in or relating to damping apparatus for swivelling wheels of aircraft and other vehicles - Google Patents
Improvements in or relating to damping apparatus for swivelling wheels of aircraft and other vehiclesInfo
- Publication number
- GB549773A GB549773A GB2887/41A GB288741A GB549773A GB 549773 A GB549773 A GB 549773A GB 2887/41 A GB2887/41 A GB 2887/41A GB 288741 A GB288741 A GB 288741A GB 549773 A GB549773 A GB 549773A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wheel
- piston
- space
- sleeve
- aircraft
- 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
- B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface
- B64C25/50—Steerable undercarriages; Shimmy-damping
- B64C25/505—Shimmy damping
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Braking Arrangements (AREA)
Abstract
549,773. Frictional shock absorbers. RUBERY OWEN MESSIER, Ltd., CONWAY, H. G.,and ORLOFF, G. March 3, 1941. No. 2887. [Class 108 (iii)] [Also in Group XXXIII] To damp oscillations in a swivelling wheel on an aircraft or other vehicle, a brake acting upon the wheel support is applied by fluid displaced from a cylinder as the wheel moves from its central position. An escape valve with a restricted orifice enables slow oscillations to take place without building up sufficient pressure to apply the brake. As applied to a tail or nose wheel on an aircraft a wheel fork 13 is secured to a conical stem 14 rotating in bearings in a casing 43 which may be pivoted at 44 for retracting the wheel. A sleeve 50 is secured to the casing 43 by a flange 51, and anchored to this sleeve by a dog clutch 53 is an inner sleeve 22 tightened by a nut 54 which forms an abutment for a spring 19 acting upon a piston 20 moving in a cylindrical space 21. The space 21 is divided from a lower space 55 by a partition 52 into which is screwed a valve member 70 housing a lightly loaded check valve 24 having a restricted orifice 25. Rollers 65 carried by the wheel fork act upon a cam 64 formed on a flange carried by a piston 56 moving in the space 55, relative rotation bein gprevented by rollers 61 engaging grooves 62 on the outside of the sleeve 22. Slow upward displacements of the piston 56 displace oil into the space 21 and the piston 20 is raised against the spring 19 the valve 24 permitting free return movement for centralizing the wheel. Quick upward displacement of the piston 56 builds up pressure sufficient to expand brake shoes 31, 32, Fig. 3, against a cylindrical surface 72 formed within the stem 14. The pressure is applied through a passage 71 to a cylinder 28 in which move opposed pistons 29, 30. A spring 73 withdraws the shoes when the pressure falls. Specification 549,772 is referred to in the Provisional Specification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2887/41A GB549773A (en) | 1941-03-03 | 1941-03-03 | Improvements in or relating to damping apparatus for swivelling wheels of aircraft and other vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2887/41A GB549773A (en) | 1941-03-03 | 1941-03-03 | Improvements in or relating to damping apparatus for swivelling wheels of aircraft and other vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB549773A true GB549773A (en) | 1942-12-07 |
Family
ID=9747872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2887/41A Expired GB549773A (en) | 1941-03-03 | 1941-03-03 | Improvements in or relating to damping apparatus for swivelling wheels of aircraft and other vehicles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB549773A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2508351A (en) * | 1946-07-27 | 1950-05-23 | Cleveland Pneumatic Tool Co | Caster centering device |
| US2525362A (en) * | 1945-12-06 | 1950-10-10 | Siam | Device for automatically returning and locking movable members, in particular aircraft wheels |
| US2560726A (en) * | 1948-08-27 | 1951-07-17 | Deere Mfg Co | Controlled caster wheel for agricultural implements |
| US5221100A (en) * | 1992-07-16 | 1993-06-22 | Mcnutt Darrell A | Trailer frame with stabilized caster swivel |
| US5762155A (en) * | 1994-11-29 | 1998-06-09 | Richard Van Seenus Nederland B.V. | Wheelchair frame and castor assembly |
-
1941
- 1941-03-03 GB GB2887/41A patent/GB549773A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2525362A (en) * | 1945-12-06 | 1950-10-10 | Siam | Device for automatically returning and locking movable members, in particular aircraft wheels |
| US2508351A (en) * | 1946-07-27 | 1950-05-23 | Cleveland Pneumatic Tool Co | Caster centering device |
| US2560726A (en) * | 1948-08-27 | 1951-07-17 | Deere Mfg Co | Controlled caster wheel for agricultural implements |
| US5221100A (en) * | 1992-07-16 | 1993-06-22 | Mcnutt Darrell A | Trailer frame with stabilized caster swivel |
| US5762155A (en) * | 1994-11-29 | 1998-06-09 | Richard Van Seenus Nederland B.V. | Wheelchair frame and castor assembly |
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