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:
Apr. 26, 2011
Filed:
Jul. 13, 2005
Bart Depreitere, Herent, BE;
Jan Goffin, Herent, BE;
Carl Van Lierde, Leuven, BE;
Bart Haex, Heverlee, BE;
Jos Vander Sloten, Boortmeerbeek, BE;
Remy Van Audekercke, Mechelen, BE;
George Van Der Perre, Huldenberg, BE;
Ignace Verpoest, Kessel-Lo, BE;
Peter Verschueren, Bierbeek, BE;
Hans Delye, Wilsele, BE;
Bart Depreitere, Herent, BE;
Jan Goffin, Herent, BE;
Carl Van Lierde, Leuven, BE;
Bart Haex, Heverlee, BE;
Jos Vander Sloten, Boortmeerbeek, BE;
Remy Van Audekercke, Mechelen, BE;
George Van der Perre, Huldenberg, BE;
Ignace Verpoest, Kessel-Lo, BE;
Peter Verschueren, Bierbeek, BE;
Hans Delye, Wilsele, BE;
K.U. Leuven Research & Development, Leuven, BE;
Abstract
A protective helmet is described comprising: an outer layer (); an inner layer () for contact with a head of a wearer; and an intermediate layer () comprising an anisotropic cellular material comprising cells having cell walls, the anisotropic cellular material having a relatively low resistance against deformation resulting from tangential forces on the helmet. The anisotropic material can be a foam or honeycomb material. The foam is preferably a closed cell foam. The helmet allows tangential impacts to the helmet which cause less rotational acceleration or deceleration of the head of the wearer compared to helmets using isotropic foams while still absorbing a significant amount of rotational energy.