发明授权
- 专利标题： Respirator having thermochromic fit-indicating seal
- 专利标题（中）： 具有热变色配合指示密封的呼吸器
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申请号： US526909申请日： 1995-09-12
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公开(公告)号： US5617849A公开(公告)日： 1997-04-08
- 发明人: James E. Springett , Leonard W. Barrett
- 申请人： James E. Springett , Leonard W. Barrett
- 申请人地址： MN St. Paul
- 专利权人： Minnesota Mining and Manufacturing Company
- 当前专利权人： Minnesota Mining and Manufacturing Company
- 当前专利权人地址： MN St. Paul
- 主分类号： A62B18/02
- IPC分类号： A62B18/02 ; A62B27/00 ; G01M3/04 ; A62D5/00
摘要：
Respirator 10 has a respirator body 11 that is configured to fit over the nose and mouth of a wearer. A thermochromic material 18 is positioned on the respirator body 11 such that the thermochromic material 18 makes thermal contact with the wearer's face when the respirator 10 is worn. The contact causes the thermochromic material 18 to change color to allow the wearer to determine if a proper fit has been established.
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