Earmuff structure for headset or ear protector
US7245735B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Apr 2, 2004 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Sep 13, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R5/033
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An earmuff structure for headset or ear protector includes two earmuff shells and two integrally injection molded speaker mounting plates that are screwed to an inner side of the earmuff shells and each has a central hole for receiving a speaker therein. The speaker mounting plates are provided at a rear surface with wall portions of predetermined heights. The wall portions on one of the speaker mounting plates are formed from outer bottom surfaces of two battery compartments formed on a front surface of the speaker mounting plate at two sides of the central hole. With the speaker mounting plates, batteries and speakers may be quickly assembled to form the earmuffs or disassembled for replacement. The wall portions on each speaker mounting plate cooperates with a foam located behind the speaker to define a space functioning like a cabinet, creating clear and high quality stereo sounds output from the speakers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.