Transparent or translucent earmuff cup

Details Transparent or translucent earmuff cup Transparent or translucent earmuff cup

1999-07-20

2000-11-28

Nerbun, Peter

Apparel

Head coverings

Convertible

128867, 181129, A61F 1108

Patent

active

061517178

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.

REFERENCES:
patent: 1988880 (1935-01-01), Strouse
patent: 2570675 (1951-10-01), Heflin
patent: 2883671 (1959-04-01), Hornickel
patent: 4916758 (1990-04-01), Jordan-Ross
patent: 5426790 (1995-06-01), Robertson
patent: 5551090 (1996-09-01), Thompson
patent: 5749099 (1998-05-01), Voorhees

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