Title:
イヤーマフ
Document Type and Number:
Japanese Patent JP2008520337
Kind Code:
A
Abstract:
An earmuff (3) includes a disc-shaped elastomeric pressure-equalizing element (6′) that lies between an inner end of a cup (4) and an outer face of an annular element (7). The elastomeric element (6′) is found to provide a more consistent blocking of environmental sound. The cup inner end has a radial projection (15) that projects into a recess (19), and the elastomeric element is bent to lie between the projection and the walls of the recess.
Inventors:
Hanson, Fredrik
Hagrund, Cress
Hagrund, Cress
Application Number:
JP2007542973A
Publication Date:
June 19, 2008
Filing Date:
November 16, 2005
Export Citation:
Assignee:
Howard Light Industries, LRC
International Classes:
A61F11/14; A61F
Domestic Patent References:
| JPH067397A | 1994-01-18 |
Foreign References:
| US5996123A | 1999-12-07 |
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Yutaka Yoshida
Toru Mori
Hajime Asamura
Yutaka Yoshida
Toru Mori