Safety helmet with improved adjustment
US8856974B2 · kind B2 · utility
3Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 2011 |
| Grant date | Oct 14, 2014 |
| Priority date | — |
| Expiry date | Nov 17, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA42B3/145
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A safety helmet comprising an outer shell, an internal headband composed of a neckband at the rear and a securing strap at the front, and an adjustment mechanism of the headband.The adjustment mechanism comprises a double cog-wheel having a first sprocket associated with a first drive rack of the neckband, and a second sprocket associated with a second drive rack of the strap. The two sprockets have different diameters to perform differential driving of the strap and of the neckband.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.