Helmet
US11944150B2 · kind B2 · utility
0Cited by
5References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2019 |
| Grant date | Apr 2, 2024 |
| Priority date | — |
| Expiry date | Oct 21, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA42B3/14
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The present invention provides a helmet, comprising first and second components having a sliding interface between them, wherein the sliding interface is provided between respective sliding surfaces of the first and second components, and the first component comprises (a) a mixture of (i) an olefin polymer, (ii) a lubricant, and optionally one or more further agents; or (b) an ultra high molecular weight (UHMW) polymer having a density of ≤960 kg/m3, which UHMW polymer is preferably an olefin polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.