Checkable earplug
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 12, 2002
Issued Date -
N/A
app pub date -
May 9, 2000
filing date -
Apr 21, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An earplug has a front portion (14) for entering the ear canal and a rear portion (16) that serves as a handle, with a marking (56) near their intersection to indicate to a supervisor whether or not the earplug has been fully installed. The marking is preferably the result of the front and rear portions being formed of material of different colors. Thus, if a supervisor observes a location where a color change occurs, at a significant distance out of the worker's ear canal, the supervisor is informed of a possible insufficient depth of earplug installation.
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Family
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