Title:
EAR PLUG
Document Type and Number:
Japanese Patent JP2017213342
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an ear plug capable of reducing discomfort caused by long-term wearing, while keeping excellent noise insulation performance and preventing breakage caused by elastic deformation.SOLUTION: A cannonball-shaped ear plug 1 comprises: an ear plug body 11 made from elastic foam plastic material; and three grooves 12, 13, and 14 provided spirally in the outer peripheral surface of the ear plug body 11. In the second mode of the ear plug, the area of the grooves provided in the outer peripheral surface of the ear plug body in the ear plug of the first mode accounts for 10% to 60% of the area of the entire outer peripheral surface of the ear plug body.SELECTED DRAWING: Figure 1
Inventors:
UTSUKI YOHEI
MIFUNE YUZO
MIFUNE YUZO
Application Number:
JP2016238016A
Publication Date:
December 07, 2017
Filing Date:
December 07, 2016
Export Citation:
Assignee:
MIDORI ANZEN CO LTD
International Classes:
A61F11/08
Attorney, Agent or Firm:
Hiroyuki Kurihara
Mountain Saki Yuichiro
Mountain Saki Yuichiro