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:
Jul. 17, 2007
Filed:
Apr. 05, 2002
Andrew D. Bank, Bedford, GB;
Ian D. Macfarlane, Irthlingborough, GB;
Keith D. Hills, Huntingdon, GB;
Paul Burton, Huntingdon, GB;
Andrew D. Bank, Bedford, GB;
Ian D. MacFarlane, Irthlingborough, GB;
Keith D. Hills, Huntingdon, GB;
Paul Burton, Huntingdon, GB;
New Transducers Limited, London, GB;
Abstract
A loudspeaker includes a box-form structure made from stiff lightweight sheet material to define a plurality of faces, at least one face of the structure forming a panel-form bending wave acoustic radiator, and an electro-acoustic vibration transducer coupled thereto to apply bending wave energy to the radiator to cause it to radiate an acoustic output when an input signal is applied to the transducer. The box-form structure is collapsible, so that the box-form structure can be stored and transported in a flat form and erected as a box when required as a loudspeaker.