Method of tensioning a diaphragm for an electro-dynamic loudspeaker
US7278200B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 2003 |
| Grant date | Oct 9, 2007 |
| Priority date | — |
| Expiry date | Nov 5, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1089
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Electro-dynamic loudspeakers typically include a diaphragm having a conductor applied to one of its surfaces. The diaphragm is secured to a frame. The conductor is connected to a power supply for providing electrical current through linear traces of the conductor that interact with magnetic fields generated by magnets that are mounted to the frame. The diaphragm is driven by a motive force created when current passes through the conductor within the magnetic field. The electrical current is varied to create an acoustical output from the electro-dynamic loudspeaker. Different methods of tensioning the diaphragm are provided for simplifying the manufacturing process and for assuring proper diaphragm tension.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.