发明名称 |
Transparent or translucent earmuff cup |
摘要 |
The present invention provides an earmuff device comprising an earmuff cup having at least a window portion which is formed of an optical material which transmits light rays in such a way that the human eye can see through the material to a degree that an earplug or other object inserted within the ear is visually perceivable to the human eye. In other words, the earmuff cup is formed of a transparent material or a translucent material so long as the earplug inserted within the wearer's ear is visually perceivable through the translucent portion of the earmuff cup. Because the earmuff cup is formed of a material that permits an individual, such as a supervisor or hearing conservationist, to perceive whether an earplug is inserted within the wearer's ear, the earmuff device of the present invention is particularly well suited for use in a dual hearing protection environment in which the previous method of compliance monitoring was time consuming and difficult.
|
申请公布号 |
US6151717(A) |
申请公布日期 |
2000.11.28 |
申请号 |
US19990357217 |
申请日期 |
1999.07.20 |
申请人 |
AEARO COMPANY |
发明人 |
LINDGREN, FREDRIK;MYERS, BRIAN;HALL, JAMES |
分类号 |
A61F11/14;(IPC1-7):A61F11/08 |
主分类号 |
A61F11/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|