Electro-optic light shutter and frame assembly with integrated switching mechanism
US5377032A · kind A · utility
68Cited by
12References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1993 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Feb 5, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/067
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A frame assembly for a light shutter including a frame structure for enclosing an electro-optic shutter assembly, the frame structure having a front surface which can be positioned opposite a cover lens, and a switch for controlling an operation mode of the electro-optic shutter assembly, the switch being mounted on the front surface whereby pressure applied to the cover lens activates the switch. The frame assembly can be inserted and used in a welding helmet or other protective eyewear having a standard sized lens aperture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.