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Class Information
Number: 244/78.1
Name: Aeronautics > Aircraft control > Automatic > Fluid
Description: Subject matter in which the device or system includes a pneumatic or hydraulic system that automatically generates a control signal for controlling the aircraft.










Sub-classes under this class:

Class Number Class Name Patents
244/78.2 Fluid amplifiers 8


Patents under this class:

Patent Number Title Of Patent Date Issued
8249843 Predicting aerodynamic impacts for small appendages (IRCM installation) on large fixed wing aircraft using computational fluid dynamics Aug. 21, 2012
8020379 Double redundancy electro hydrostatic actuator system Sep. 20, 2011
7913955 Aircraft control surface drive system and associated methods Mar. 29, 2011
7637458 Systems and methods for providing back-up hydraulic power for aircraft, including tanker aircraft Dec. 29, 2009
7600715 Local backup hydraulic actuator for aircraft control systems Oct. 13, 2009
7191593 Electro-hydraulic actuator system Mar. 20, 2007
7139643 Control device with servocontrol loop, particularly an electro-hydraulic flight control actuator Nov. 21, 2006
7007897 Flight control actuation system Mar. 7, 2006
6799739 Aircraft control surface drive system and associated methods Oct. 5, 2004
6796526 Augmenting flight control surface actuation system and method Sep. 28, 2004
6793177 Active drag and thrust modulation system and method Sep. 21, 2004
6764044 Airplane spiralling mechanism Jul. 20, 2004
6718762 Contingency hydraulic power unit Apr. 13, 2004
6651930 Process and control system for an aircraft control surface actuated by multiple hydraulic jacks and with modular power Nov. 25, 2003
6625982 Electronically controlled hydraulic actuating system Sep. 30, 2003
6209825 Low power loss electro hydraulic actuator Apr. 3, 2001
6189837 Auxiliary spoiler retract system Feb. 20, 2001
6076767 Flight control surface actuation system Jun. 20, 2000
6003811 Aircraft servovalve current rate limiter Dec. 21, 1999
5873548 Airacraft hydraulic system for improved reliability of integrated hydraulic propulsion controls Feb. 23, 1999
5600220 System for servo-controlling an aircraft flight control member Feb. 4, 1997
5409188 Stability compensating mechanism of electro-hydraulic servo system Apr. 25, 1995
5351914 Hydraulic control system for aircraft Oct. 4, 1994
5238207 Aircraft rudder boost system Aug. 24, 1993
5135186 Flutter control system for aircraft wings Aug. 4, 1992
5100082 Hydraulic power supplies Mar. 31, 1992
5082208 System and method for controlling an aircraft flight control member Jan. 21, 1992
5074495 Load-adaptive hybrid actuator system and method for actuating control surfaces Dec. 24, 1991
5033694 Attitude control device for air or sea transportation craft Jul. 23, 1991
4826110 Oscillatory failure monitor May. 2, 1989
4744532 Aircraft flight control system May. 17, 1988
4667472 Electric integrated actuator with variable gain hydraulic output May. 26, 1987
4615497 Method and flutter brake for an aircraft Oct. 7, 1986
4461449 Integral hydraulic blocking and relief valve Jul. 24, 1984
4173322 Flutter prevention means for aircraft primary flight control surfaces Nov. 6, 1979
3992979 Hydraulic actuating arrangements Nov. 23, 1976
3986475 Control arrangement Oct. 19, 1976
3965798 Adaptive actuator system Jun. 29, 1976











 
 
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