EP 2854584 A1 20150408 - PROTECTIVE HELMET FOR MITIGATION OF LINEAR AND ROTATIONAL ACCELERATION
Title (en)
PROTECTIVE HELMET FOR MITIGATION OF LINEAR AND ROTATIONAL ACCELERATION
Title (de)
SCHUTZHELM ZUR ABSCHWÄCHUNG VON LINEAREN UND DREHBESCHLEUNIGUNGEN
Title (fr)
CASQUE DE PROTECTION POUR ATTÉNUER UNE ACCÉLÉRATION LINÉAIRE ET ROTATIVE
Publication
Application
Priority
- US 201261670258 P 20120711
- US 201313803962 A 20130314
- US 2013049968 W 20130710
Abstract (en)
[origin: US2014013492A1] Embodiments provide protective helmets configured to protect the head from linear and rotational acceleration in an impact. In various embodiments, the helmets may include an outer layer, an inner layer, and at least one intermediate layer coupled to the outer and inner layers by alternate fixation sites, thereby providing a suspension between the outer and inner layers. In various embodiments, the intermediate layer may be made from a honeycomb material, such as an aluminum honeycomb. In use, in-plane deformation of the honeycomb may allow for translation of the outer layer in a substantially tangential direction relative to the inner layer, thereby mitigating rotational acceleration imparted by the tangential impact component. Additionally, crumpling of the honeycomb in a substantially non-elastic manner may deplete impact energy to minimize the elastic rebound that can contribute to linear and rotational head acceleration, thereby mitigating linear acceleration imparted by the perpendicular impact component.
IPC 8 full level
CPC (source: CN EP US)
A42B 3/064 (2013.01 - CN EP US); A42B 3/065 (2013.01 - US); A42B 3/124 (2013.01 - EP); A42B 3/125 (2013.01 - CN US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
US 2014013492 A1 20140116; AU 2013290156 A1 20150205; CA 2878613 A1 20140116; CN 104427896 A 20150318; EP 2854584 A1 20150408; EP 2854584 A4 20170201; WO 2014011802 A1 20140116
DOCDB simple family (application)
US 201313803962 A 20130314; AU 2013290156 A 20130710; CA 2878613 A 20130710; CN 201380036845 A 20130710; EP 13816787 A 20130710; US 2013049968 W 20130710