Patent · US Active

Earmuff accommodating welding shield

US9596902B2 · kind B2 · utility

20Cited by

12References

18Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Björn Daniels · Vikarbyn, SE
Mats U. Sernfält · Leksand, SE
Oskar Juhlin · Boo, SE

Key dates

Filing date	May 30, 2014
Grant date	Mar 21, 2017
Priority date	—
Expiry date	Apr 7, 2035

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61F11/14
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A welding helmet 10 that has a face shield 12 that has a native width NW and that has a lens 14 disposed in the face shield 12. A spreader bar 30 can expand the face shield 12 from its native width NW to an increased width IW to allow the welding shield 10 to easily accommodate earmuffs 16 worn by the welder.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.