Water-proof sound-transmitting member and method for producing same, and supported water-proof sound-transmitting member
US8986802B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2012 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | Aug 13, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/28
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A water-proof sound-transmitting member that can be separated reliably from a releasing paper when an overhanging portion of a tab is pulled can be produced by producing a laminate by laminating a first layer, a preliminary membrane body, a second layer, and a preliminary tab body in this order; inserting a blade into the laminate from the first layer side to cut the first layer, the preliminary membrane body and the second layer so as to form the water-proof sound-transmitting membrane between adhesive layers, and providing, in a surface of the preliminary tab body on a side of the second layer, a notch, followed by cutting the preliminary tab body to form the tab.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.