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:
Apr. 10, 2012
Filed:
Feb. 26, 2007
Applicant:
Engbert Wilmink, Delft, NL;
Inventor:
Engbert Wilmink, Delft, NL;
Assignee:
Dynamic Ear Company B.V., Delft, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
An earplug is described for insertion in an auditory duct. The earplug includes a loudspeaker for connection to a playback device. When inserted in a user's ear, the loudspeaker is in acoustic communication with the ear's canal. A transmitter is provided that transmits ambient sound to the ear canal with an adjustable damping level. A regulating unit regulates a damping level depending on detection of control signals to the loudspeaker. When the user does not listen to, for instance, music of the playback device, the user can simply observe ambient sounds without removing the earplug from the ear.