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:
Jul. 20, 2021
Filed:
Mar. 14, 2019
Bose Corporation, Framingham, MA (US);
Stephen J. Maguire, Grafton, MA (US);
Andrew Munro, Northborough, MA (US);
Bose Corporation, Framingham, MA (US);
Abstract
A wearable audio device with an electro-acoustic transducer that is configured to create audio output. The transducer has a transducer magnet that produces a transducer magnetic field having a magnetic field strength, and a magnetic structure such as a cup that guides the transducer magnetic field. The transducer magnet is on the inside of the magnetic structure. There is a magnetic field sensor outside of the magnetic structure; the magnetic field sensor is constructed and arranged to sense the Earth's magnetic field. A nulling magnet is coupled to or proximate the outside of the magnetic structure and is constructed and arranged to produce a nulling magnetic field that reduces the strength of the transducer magnetic field at the magnetic field sensor.