Patents by Inventor Huib Groot Obbink

Huib Groot Obbink has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electroacoustic transducer with improved shock resistance
    Patent number: 6075870
    Abstract: A transducer which is particularly suitable for hearing aids is set forth which has improved resistance to mechanical shock. The transducer includes a coil having a tunnel, a magnetic member with a pair of magnets defining an air gap and an armature extending through the tunnel and into the air gap. The coil is rotated with respect to the magnetic member in a manner such that the coil forms a stop for the armature, thus preventing excessive deflection of the armature leg in the occurrence of a shock. The armature may also be provided with expanded edge portions which assist in limiting its deflection.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: June 13, 2000
    Assignee: Microtronic B.V.
    Inventors: Onno Geschiere, Hendrik Dolleman, Huib Groot Obbink, Aart Zeger van Halteren