Helmet with visor mechanism
US4571747A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1984 |
| Grant date | Feb 25, 1986 |
| Priority date | — |
| Expiry date | Feb 22, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA42B3/223
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A locking and release mechanism for a helmet which, on release, permits rotation of the visor in either direction. The mechanism comprises an arcuate track (23) fixed to the helmet shell (11). The visor is preferably mounted on an arm (19) rotatable about an axis transverse of the shell and connected to a subsidiary arm (27) rotatable about the same axis. On the arm is a shoe (31) with a flat surface (37) opposing arcuate surface (25) of the track. Two interengaging operating members (45, 47) with respective guide surfaces are pivotally mounted on the shoe. Two outwardly biassed rollers (95, 97) are located between the opposed surfaces. Movement of the operating members against the rollers' biassing brings the guide surfaces into contact with the rollers and pushes them from wedging engagement to release the mechanism permitting rotation of the visor against low opposition from the rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.