Loudspeaker with multiple stage suspension system
US11006220B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2017 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | May 6, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-stage mechanical suspension system extends a linear operating range for a loudspeaker and prevents mechanical damage on explosive peaks. The system includes a pair of spaced contact receivers that limit the travel of a contactor. The system provides a flat linear response at low frequencies as the contact receivers are intermittently or occasionally contacted by the contactor during operation of the loudspeaker. The system enables creation of different regions of non-linearity within a total stiffness versus deflection curve of a loudspeaker suspension system. The non-linearity in each region can be controlled individually, so long as the non-linearity by region increases moving away from the rest position. Thus, a plateau of substantially linear stiffness may extend for a large portion of the total displacement allowed for a voice coil and suspension components before a region of non-linear stiffness occurs only at the ends of an allowable excursion to limit the motion. More than two regions of stiffness also can be created to achieve maximum performance and stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.