Waterproof speaker for use in an automobile
US6810129B2 · kind B2 · utility
5Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 17, 2002 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Dec 31, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A damper-mounting wall portion 40 which is provided on a small-diameter end of a trumpet-shape part of a frame 1 so as to extend in a diametrically inward direction is formed with an outside diameter which is larger than a diameter of a damper 8 which is adhered thereto. On a peripheral edge portion of the damper-mounting wall portion 40, there is integrally formed an annular eave-shaped barrier wall portion 41 which extends in an axial direction toward the front side of the frame 1 so as to enclose the circumference of the damper 8 at a position away from the periphery of the damper 8.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.