Asius Technologies, LLC

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

University of Massachusetts

University of Tennessee Research Foundation

Roland Weidisch

Samuel P Gido

Jimmy Wayne Mays

Robert B Schulein

Stephen D Ambrose

Thermoplastic elastomer compositions are described comprising multigraft copolymers. The multigraft copolymers can comprise a rubbery polymeric backbone and a plurality of glassy polymeric side chains, each attached at one of a plurality of branch points randomly spaced along the backbone. The copolymer materials have high tensile strength, high strain at break, and low residual strain after elongation. The compositions can be used as adhesives and in a wide variety of high tech, medical, and commodity applications.

Multigraft copolymers as superelastomers

The disclosed methods and devices incorporate a novel expandable bubble portion which provides superior fidelity to a listener while minimizing listener fatigue. The expandable bubble portion may be expanded through the transmission of low frequency audio signals or the pumping of a gas to the expandable bubble portion. In addition, embodiments of the acoustic device may be adapted to consistently and comfortably fit to any ear, providing for a variable, impedance matching acoustic seal to both the tympanic membrane and the audio transducer, respectively, while isolating the sound-vibration chamber within the driven bubble. This reduces the effect of gross audio transducer vibration excursions on the tympanic membrane and transmits the audio content in a manner which allows the ear to utilize its full inherent capabilities.

Diaphonic acoustic transduction coupler and ear bud

Growing community of inventors

Halle, Germany

Roland Weidisch