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:
May. 20, 2008
Filed:
Sep. 02, 2004
Patrik Westerkull, Gothenburg, SE;
Patrik Westerkull, Gothenburg, SE;
Oticon A/S, Smørum, DK;
Abstract
The vibrator system is for generating bone conduction vibrations. A magnet () provides a static magnetic flux (Φ) that follows a first path. A bobbin () is disposed at a center a vibrator (). A housing () encloses the bobbin and has a coil surrounding a center of the bobbin. The coil is powered by an alternating current for providing an alternating dynamic magnetic flux (Φ) following the first path through a magnetic circuit. The housing has an upper end (). The upper end and the bobbin have a first gap () formed therebetween. The housing has a lower end () opposite the upper end. The lower end and the bobbin have a second gap () formed therebetween. The magnet is positioned so that the static magnetic flux (Φ) is passing through the first and second gaps in a direction substantially parallel with an axial direction (A) of the vibrator. Suspension means () are provided for suspending the bobbin in a center of the housing.