Diaphragm for electroacoustic transducer
US4753969A · kind A · utility
2Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1985 |
| Grant date | Jun 28, 1988 |
| Priority date | — |
| Expiry date | Jul 18, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2978
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A diaphragm for an electroacoustic transducer comprising stratiform mineral of layers into which a hardener or an agent for facilitating hardening is adsorbed between the layers, thermosetting resin monomer, and carbonfibers which constitute a composite material which is formed under heat and pressure. The diaphragm is increased in rigidity which is required as physical properties therefor and is easy in forming.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.