The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 2009
Filed:
Sep. 20, 2006
Alan L. Browne, Grosse Pointe, MI (US);
Nancy L. Johnson, Northville, MI (US);
Kenneth A. Strom, Washington, MI (US);
Diann Brei, Milford, MI (US);
Jonathan E. Luntz, Ann Arbor, MI (US);
Brian M. Barnes, Ypsilanti, MI (US);
Alan L. Browne, Grosse Pointe, MI (US);
Nancy L. Johnson, Northville, MI (US);
Kenneth A. Strom, Washington, MI (US);
Diann Brei, Milford, MI (US);
Jonathan E. Luntz, Ann Arbor, MI (US);
Brian M. Barnes, Ypsilanti, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
The University of Michigan, Ann Arbor, MI (US);
Abstract
Hood lift mechanisms for reversibly increasing the energy absorption capability at appropriate force levels of a vehicle closure includes a vehicle closure; an active material in operative communication with the vehicle closure, 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 closure and an underlying component.