Vehicle hood with sandwich inner structure

Land vehicles: bodies and tops – Bodies – Structural detail

Reexamination Certificate

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Details

C052S783170, C052S783190, C180S069200

Reexamination Certificate

active

07735908

ABSTRACT:
An energy-absorbing hood assembly for a vehicle includes upper and lower layers and a middle panel. The upper and lower layers have first and second interface surfaces, respectively. The middle panel has opposing first and second surfaces defining a corrugated profile having a plurality of bonding surfaces, the bonding surfaces being attached to the first and second interface surfaces to thereby define a plurality of laterally oriented channels. The corrugated profile further defines a height and wavelength along a substantial portion of the hood assembly, each being configured to be variably tunable to provide different predetermined levels of absorption and attenuation of kinetic energy imparted to the hood assembly by objects upon impact therebetween. Preferably, the hood assembly also includes an upper hood panel having an inner surface secured to the upper layer. Ideally, the corrugated profile is a trapezoidal waveform profile.

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Koki Ikeda et al., Development of Aluminum Hood Structure for Pedestrian Protection, Oct. 29, 2003.

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