Welding helmet with removable face plate and lens cartridge
US6151711A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1999 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Apr 1, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/061
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A welding helmet includes a removable lens cartridge assembly which is slidingly received by a slot at the front of the welding helmet. The lens cartridge assembly includes a picture frame slot into which a face lens may be friction fit by insertion from the side. Additional filters and lenses may be held in place within the cartridge by a removable frame assembly that has a plurality of integrally formed but resilient finger extensions which press against the filters as they are placed within the cartridge. The frame assembly mechanically interlocks with the removable cartridge with a plurality of locating tabs and slots. The cartridge assembly itself is also mechanically positively interlocked to the welding helmet with a locating nib and receiving hole near the bottom of the slot. The receiving slot has a front and rear picture frame border which surrounds and encapsulates the removable lens cartridge so that the lens cartridge is mechanically locked in place and captured within a mechanical fixture to avoid its being dislodged upon impact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.