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:
Aug. 11, 2020
Filed:
Nov. 13, 2018
Oticon Medical A/s, Smørum, DK;
Bengt Bern, Askim, SE;
Oticon Medical A/S, Smørum, DK;
Abstract
An electromagnetic vibrator for a bone conduction hearing aid is disclosed. The electromagnetic vibrator comprises a magnet arrangement comprising a central portion, a coil wound around the central portion and being configured to generate a dynamic magnetic field and at least one permanent magnet configured to generate a static magnetic field. The electromagnetic vibrator further comprises a vibrator plate arranged in position and in such a manner that a gap, extending across a longitudinal axis of the electromagnetic vibrator is provided between the vibrator plate and at least one of said central portion or at least one permanent magnet. The electromagnetic vibrator further comprises an encasing surrounding at least a portion of the magnet arrangement. The magnet arrangement includes a bobbin assembly and encasing comprise a gap adjustment mechanism that is configured to move the bobbin assembly relative to the encasing for adjusting the gap between the vibrator plate and at least one of said central portion or at least one permanent magnet.