Patent · US Active

Helmet, helmet liner and method for manufacturing the same

US7676854B2 · kind B2 · utility

69Cited by

19References

14Claims

0Family size

Assignee

Crescendo AS · NO

Inventors

Jan Berger · Oslo, NO
Johan Horsrud · Fredrikstad, NO
Ulf Tolfsen · Fredrikstad, NO
Roy Kristiansen · Sandefjord, NO

Key dates

Filing date	Apr 7, 2005
Grant date	Mar 16, 2010
Priority date	—
Expiry date	Jul 15, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/4821
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

This invention relates to a helmet, comprising an external shell (9) and an impact-absorbing helmet liner (10) in which the helmet liner comprises a layer provided with protruding, deformable and impact-absorbing hollow knobs (7) distributed on an substantial part of the surface of the helmet liner as a protective layer.The helmet is characterized in that the hollow knots (7) are arranged for deformation by crushing in case of external impact on the helmet, and that the helmet liner (10) with the hollow knots (7) exhibits undercut.The helmet may also comprise an impact-absorbing and preferably resilient layer (2) which may be arranged between the external shell (9) and an internal lining (11) being arranged to rest in contact with the head of a user.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.