Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Body contact wave transfer
Reexamination Certificate
2005-11-30
2009-10-06
Mei, Xu (Department: 2614)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Body contact wave transfer
C381S124000, C015S167100
Reexamination Certificate
active
07599506
ABSTRACT:
A device and method for transmitting sound waves between a signal source and a user's ears, wherein the sound waves bypass the air. The sound waves are conducted by the user's teeth and bones to the user's ears, where they are perceived as sound. Sound-transmitting toothbrushes and the like are described to transmit and/or conduct sound to the user's ear, while the user is brushing his or her teeth. The toothbrush head and a signal source are configured to produce sound waves for transmission through the toothbrush head to the user's mouth, and a tension controller is configured to control the volume of the sound waves based on the pressure applied by the toothbrush head. The signal source may produce sound waves directly or with the assistance of a transducer. The signal source may be replaceable, connect to a replaceable cartridge, or connect to an adaptor capable of downloading data to allow the signal source data to be replaceable. The tension controller may include gap spacing between the transducer coil and transducer plate. The tension controller may also include a boost switch configured as a bypass switch, activation signal, or force sensor.
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PCT/US2005/43245—International Search Report. dated Nov. 30, 2006.
PCT/US2005/43245—Written Opinion of the International Searching Authority. dated Nov. 30, 2006.
PCT/US2005/43245—Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority or the Declaration. Nov. 30, 2006.
Capper David G.
Filo Andrew S.
Hasbro Inc.
Hoffman Perry
Mei Xu
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