Invention Grant
- Patent Title: Welding helmet having a filter arrangement
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Application No.: US16885580Application Date: 2020-05-28
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Publication No.: US11324633B2Publication Date: 2022-05-10
- Inventor: Kristina M. Magnusson , Kenneth Jarefors
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee: 3M INNOVATIVE PROPERTIES COMPANY
- Current Assignee Address: US MN St. Paul
- Agent Gregg H. Rosenblatt
- Main IPC: A61F9/06
- IPC: A61F9/06
Abstract:
A welding helmet having a filter arrangement is disclosed. The welding helmet is provided with a main filter and at least one auxiliary filter separate from and positioned next to the main filter. The at least one auxiliary filter comprises an electro-optic element adapted to attenuate the transmission of optical radiation incident on the auxiliary filter.
Public/Granted literature
- US20200289324A1 WELDING HELMET HAVING A FILTER ARRANGEMENT Public/Granted day:2020-09-17
Information query
IPC分类:
