Raisable landing gear having a shortenable leg
US5299761A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1993 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Feb 25, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C25/20
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to raisable landing gear having a shortenable leg, including a shock absorber fitted with a plunger rod, and a linkage connecting said plunger rod to the strut of the shock absorber, under the control of a resilient connecting rod having a threshold, serving to pull on the shock absorber when the leg is raised. According to the invention, the linkage includes two arms forming an alignment, with a first arm hinged on the plunger rod and having a lateral appendix whose free end is capable of co-operating with a stationary cam secured to the structure of the airplane, and a second arm which is hinged to the strut. The lateral appendix and the stationary cam are organized to operate in an emergency, in the event of the threshold connecting rod failing, thereby ensuring that the shock absorber is extended and that said lengthened shock absorber is locked in the undercarriage-down position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.