Protective helmet with multi-density impact liners and method for same
US11266196B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2018 |
| Grant date | Mar 8, 2022 |
| Priority date | — |
| Expiry date | Nov 30, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/4821
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A helmet and method for forming a helmet having a multi-density impact liner may include forming a puck comprising an interface surface and at least one side is formed. The interface surface of the puck is placed in direct contact with a receiving surface of a cap located in an impact liner mold. Next, the interface surface of the puck is thermally fused directly to the receiving surface of the cap while contemporaneously an impact liner body is formed inside the mold. The impact liner body is fused to the at least one side of the puck, and to a majority of the receiving surface of the cap. The density of the puck may be greater than the density of the impact liner body. The puck and the impact liner body may be expanded polystyrene (EPS), and the cap may be polycarbonate (PC).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.