The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2018
Filed:
Jun. 16, 2014
Jaguar Land Rover Limited, Whitley Conventry Warwickshire, GB;
Ashutosh Tomar, Coventry, GB;
Jaguar Land Rover Limited, Whitley, Coventry, Warwickshire, GB;
Abstract
The present invention relates to a speaker device () having a first diaphragm () and a second diaphragm (). A first magnet () is mounted to the first diaphragm () and a second magnet () is mounted to the second diaphragm (). The first magnet () is a first electromagnet having a first coil () and a power source driver is provided for supplying an electrical drive signal to the first coil () to establish said first magnetic field. The first and second magnets () are arranged to generate first and second interacting magnetic fields which drive the first and second diaphragms (). The invention also relates to a speaker device () in which the second diaphragm () is replaced with a fixed back plate (). The present invention also relates to a speaker assembly () made up of an array of the speaker devices (). The speaker device () can be used in a motor vehicle.