Speaker diaphragm
US5031720A · kind A · utility
21Cited by
3References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 28, 1988 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Nov 28, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3472
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker diaphragm is formed by heat-pressurized molding a composite structure of fabric cloth and resin sank into the fabric cloth. The fabric cloth is woven from high strength and high elasticity polyethylene fiber which has at least tensile modulus of 4,500 kg/mm.sup.2 (500 g/d).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.