Latch device, in particular for latching an airplane landing gear or an airplane landing gear hatch
US6811118B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2003 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Feb 6, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1047
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A latch device, in particular for latching an airplane landing gear or an airplane landing gear hatch, the device comprising a box containing a set of hinged elements mounted to pivot about respective parallel axes, said assembly including at least one hook and a locking lever connected to said hook by an associated elastically deformable return device, said hook being capable of being unlocked by acting on said locking lever either via first actuator device in a normal mode of operation, or via a second actuator device in an emergency mode of operation when said first actuator device fails to unlock the hook. In accordance with the invention, the second actuator device associated with the emergency mode of operation is an electromechanical actuator under independent electrical control, said actuator comprising two electric motors associated in irreversible manner with a common differential gear train, having an outlet shaft controlling the pivoting of an emergency unlocking lever co-operating with the locking lever used in normal operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.