Locking hydraulic latch pin actuator
US5427329A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1993 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Apr 12, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1021
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A latch pin actuator (34) for use in connection with an aircraft (10) having folding wings or wing tips (12). The actuator (34) includes housing (38) mountable to a wing portion (12, 16). A latch pin (21) in the form of a hydraulic cylinder is slidably mounted within the housing (38) and on a piston (44) which is fixed to the housing (38). Variable volume fluid chambers (46, 48) are defined in the cylinder body of the latch pin (21). A primary lock member (58) is movable between locked and unlocked positions such that retraction of the latch pin (21) is prevented when the primary lock (58) is in a locked position. In preferred form, a hydraulic actuator (78) is used to move the primary lock member (58) between locked and unlocked positions and to operate a sequencing valve which delivers hydraulic pressure to a chamber (48) of the latch pin (21) after actuation of the primary lock (58). The latch pin actuator (34) may also include a secondary lock member (60) which can be ganged to operate in unison with adjacent latch pin actuators (34).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.