Transparent or translucent earmuff cup
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Nov 28, 2000
Grant Date -
N/A
app pub date -
Jul 20, 1999
filing date -
Jul 20, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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