Aeronautics and astronautics – Aircraft structure – Load accommodation
Reexamination Certificate
2006-09-06
2010-11-02
Collins, Timothy D (Department: 3644)
Aeronautics and astronautics
Aircraft structure
Load accommodation
Reexamination Certificate
active
07823829
ABSTRACT:
An equipment-fastening device EFD to enhance the crash safety of aircraft, for fastening a piece of equipment to a support structure of an airframe, includes a load-limiting release mechanism and a load-peak transformer connected to the release mechanism and having a load-limiting, impact-energy-absorbing deformation element. Load peaks that occur in case of a crash and that stem from equipment fastened to the support structure by means of the equipment-fastening device are first reduced to a residual load peak by the EFD after the release, thereby relieving the stress on the support structure. Only then is any residual load peak that might still remain introduced via a first fastening section of the EFD into the support structure with a time delay vis-à-vis the load peaks that occurred originally.
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Translation of German Office Action received in corresponding German Patent Application 10 2005 042 400.7-22.
W.G. Hienstorfer, “Crashstimuiationsrechnungen und Bauteilidealislerung für einen Luftfahrzeugunterboden” [Crash-simulation computations and component idealization for the subfloor of aircraft] published in the Zeitschrift for Flugwissenschaft und Weltraumforschung [magazine for aviation science and space research], vol. 11, 1987.
Bailey John
Kobl Bernhard
Majamaeki Jyrki
Collins Timothy D
Eurocopter Deutschland GmbH
Kreiner Michael
Young & Thompson
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