Raisable landing gear for heavier-than-air aircraft, in particular for helicopters
US5337976A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 1993 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Mar 26, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C2025/325
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to raisable landing gear including a shock absorbing leg that is pivotally mounted, and to a driving actuator associated therewith. According to the invention, the leg is implemented in the form of two elements that are hinged to each other about an axis parallel to the pivot axis of the leg and that are connected together by means of a shock absorber, the bottom element forming a rocker and the top element forming a panel whose free end is connected to a drive actuator which is a shock-absorbing actuator having a force threshold, said shock-absorbing actuator serving to apply a predetermined torque that maintains the leg in position during normal landing, while allowing said leg to be raised against a controlled force in the event of a crash landing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.