Spider of loudspeaker
US4239944A · kind A · utility
14Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1979 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Jan 22, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R7/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A spider of loudspeaker having a base material in the form of a plain-woven fabric of warps and wefts each of which constituted by fibers of an inorganic material. The warps and wefts are coated with a thermosetting resin which in turn is coated with a thermoplastic resin. The spider thus formed is less liable to absorb the ambient moisture and, therefore, is free from distortion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.