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:
Dec. 25, 1990
Filed:
Dec. 01, 1989
John J Lazzeroni, Tucson, AZ (US);
Melinda K Lazzeroni, Tucson, AZ (US);
Other;
Abstract
An acoustically shielded speaker enclosure for use in the ear pockets of motorcycle helmets is disclosed wherein parasitic sound waves emitted from the rear side of an enclosed audio loudspeaker are prevented from entering the motorcycle rider's ear and from mixing with and distorting the primary sound waves issued from the audio loudspeaker directed at the rider's ear. The acoustically shielded speaker enclosure consists of a pair of joined together cup-shaped housing assemblies forming a shortened cylinder adapted to enclose and secure an audio loudspeaker, the enclosure having openings in one face of the housing assemblies to allow passage of the primary sound waves from the contained loudspeaker. An acoustic shield attached to the speaker enclosure cylindrical side extends to the edge of the ear pocket and is sealed there. The parasitic sounds emanating from the rear of the loudspeaker through the rear of the speaker enclosure are this prevented from coming around the speaker enclosure by the acoustic shield to enter the rider's ear or to mix with and distort the primary sound waves.