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:
Nov. 01, 2005
Filed:
Jun. 26, 2002
Martin S. Silverman, Camarillo, CA (US);
Martin S. Silverman, Camarillo, CA (US);
DeNovo Research, LLC, Camarillo, CA (US);
Abstract
Submersible headphones comprising an acoustic circuit in which the electro-acoustic transducer is separated from the open proximal end of the circuit by a length of small hollow tube, and the volume of air in the tube is at least equal to the volume of air in the transducer itself. When the headphones are accidentally dislodged from the ear at some depth below the surface of a body of water, the proportioning of the volume of the air in the tube so that it at least equals the volume of air in the transducer prevents water from traveling down the tube into contact with the transducer. The tube is constructed of hydrophobic material, which tends to prevent water from entering the small diameter tube at atmospheric pressure. Transducers that are suitable for use include piezoelectric transducers and bipolar armature transducers.