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:
Apr. 27, 2010
Filed:
Oct. 29, 2004
Martin S. Silverman, Camarillo, CA (US);
Martin S. Silverman, Camarillo, CA (US);
Denovo Research, LLC, Camarillo, CA (US);
Abstract
A secondary button cell battery that is particularly suited for use in hearing aid appliances, and an associated charging station. Recharging is accomplished without direct conductive connection between the source of the energy and either the battery or its appliance. Radio frequency energy is harvested in an enclosed chamber in a charging station and applied to the recharging of the button cell. Such energy is harvested by the use of one or more energy harvesting diodes connected in parallel with the battery. Multiple diodes connected in parallel or serial may be used to adjust charging current or voltage or both. Charge control is provided by directly or indirectly detecting the level of charge on the cell. Where the associated appliance is a hearing aid, the charge level detection may be accomplished acoustically by determining the characteristics of the sound emitted by the hearing aid, and charging is accomplished with the cell within the hearing aid appliance.