[12] Patent
[11] Patent No.:GC0011518  
[45] Date of Publishing the Grant of the Patent: 31/Dec /2020                77/2020  
Number of the Decision to Grant the Patent:2020/175802
Date of the Decision to Grant the Patent:06/Dec/2020

[21] Application No.:GC 2016-30755

[22] Filing Date:18/1/2016

[30] Priority:

[33] State [32] Priority date [31] Priority No.

[72] Inventors:1- Mark S. GoodŲŒ2- Charles E. Jokisch

[73] Owner: The Boeing Company, 100 North Riverside Plaza, Chicago 60606-2016, Illinois , USA

[74] Agent: Saud M. A. Shawwaf Law Office




Int. Cl.: B64C 3/56 (2006.01)

[56] Cited Documents:

-US-5,310,138 A Fitzgibbon; Thomas F. May 1994
-US-9,211,946 B2 Good; Mark Steven December 2015
-US-9,290,260 B2 Lassen; Matthew August March 2016
Examiner: Eng. Mohammad W. AlHoshan

[57] Abstract: A folding wing tip system of an aircraft includes a latch pin actuator having a primary mechanical lock and a secondary hydraulic lock. The mechanical lock may include a lock cam movable between a lock position, in which the lock cam engages the latch pin, and an unlock position, in which the lock cam is disengaged from the latch pin, and a first lock actuator mechanically coupled to the lock cam and configured to provide a bias force pushing the lock cam toward the lock position. The hydraulic lock may be disposed in an unlatching hydraulic line and has an initial state, in which fluid flow through the unlatching hydraulic line is blocked thereby to hold the latch pin in the latched position, and an open state, in which fluid flow through the unlatching hydraulic line is permitted thereby to permit retraction of the latch pin to the unlatched position.
No. of claims: 13     No. of figures: 11


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