Apparatus and method for actuating control surfaces

Details Apparatus and method for actuating control surfaces Apparatus and method for actuating control surfaces

2007-05-22

2007-05-22

Le, David D. (Department: 3681)

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

C074S640000, C074S66500G, C074S66500G, C074S414000, C074S42100R, C074S424710, C244S003210, C244S003240

Reexamination Certificate

active

10797489

ABSTRACT:
An apparatus for actuating a control surface includes a first spur gear, a first drive assembly engaged with the first spur gear, a second spur gear, a second drive assembly engaged with the second spur gear, and a gear assembly capable of being coupled with the control surface and engaged with the spur gears. The gear assembly includes a first screw, a first gear engaged with the first spur gear, a thrust nut mounted to the first gear and threadedly engaged with the first screw, a second gear engaged with the second spur gear, a second screw mounted to the second gear and mechanically coupled with the thrust nut and a translation nut threadedly engaged with the second screw and capable of being coupled with the control surface. The second screw and the thrust nut rotate independently and translations of the thrust nut are transmitted to the second screw.

REFERENCES:
patent: 4272040 (1981-06-01), Bastian et al.
patent: 4679485 (1987-07-01), Nelson et al.
patent: 4738415 (1988-04-01), Weyer
patent: 4745815 (1988-05-01), Klopfenstein
patent: 4979700 (1990-12-01), Tiedeman et al.
patent: 5058445 (1991-10-01), Nilsson
patent: 5813292 (1998-09-01), Kish et al.
patent: 6247666 (2001-06-01), Baker et al.
patent: 6474594 (2002-11-01), Johnson et al.
patent: 6637699 (2003-10-01), Banks et al.

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