Manufacturing method of paper making part for loudspeaker, paper making part for loudspeaker, diaphragm for loudspeaker, sub cone for loudspeaker, dust cap for loudspeaker and loudspeaker
US8428283B2 · kind B2 · utility
0Cited by
3References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 16, 2012 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Feb 16, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A manufacturing method of a paper making part for a loudspeaker has freedom of adjusting a characteristic and a sound quality, and has a higher productivity. Accordingly, a fibrillating step of a paper making material is achieved by an explosive crushing step. Alternatively, the step is achieved by a mixing step of a paper making material and a liquid, a material micro-fabricating step of applying a pressure to a mixed solution obtained by the mixing step so as to pass through an orifice and thereafter run into a device wall, and a paper making step including the micro-fabricated material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.