Hood lift mechanisms utilizing active materials and methods...

Details Hood lift mechanisms utilizing active materials and methods... Hood lift mechanisms utilizing active materials and methods...

2006-05-09

2008-11-25

Culbreth, Eric (Department: 3616)

Motor vehicles

With means for promoting safety of vehicle, its occupant or...

Responsive to engagement of portion of perimeter of vehicle...

C049S031000, C180S069210, C180S281000, C180S282000, C296S187030

Reexamination Certificate

active

07455147

ABSTRACT:
A hood lift mechanism for reversibly increasing the energy absorption capability at appropriate force levels of a vehicle hood includes a vehicle hood; an active material in operative communication with the vehicle hood, wherein the active material comprises a shape memory alloy, a ferromagnetic shape memory alloy, a shape memory polymer, a magnetorheological fluid, an electroactive polymer, a magnetorheological elastomer, an electrorheological fluid, a piezoelectric material, an ionic polymer metal composite, or combinations comprising at least one of the foregoing active materials; and an activation device in operative communication with the active material, wherein the activation device is operable to selectively apply an activation signal to the active material and effect a reversible change in a property of the active material, wherein the reversible change results in an increased clearance distance between the vehicle hood and an underlying component.

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