Simplified dual visor operating mechanism
US5113535A · kind A · utility
8Cited by
9References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1991 |
| Grant date | May 19, 1992 |
| Priority date | — |
| Expiry date | Jul 31, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA42B3/226
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A dual visor and helmet assembly in which inner and outer visors mounted on arbors secured to opposite sides of the helmet for movement between operative and inoperative positions are clamped respectively to one and to the other of the arbors by pre-loaded C-rings coupled to the visors. Respective manually actuatable operating rings on the visors may be actuated to release the clamping forces of the C-rings and to move the visors between their operative and inoperative positions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.