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. 11, 1995
Filed:
May. 27, 1993
Applicant:
Inventors:
Syoji Kasajima, Nagaokakyo, JP;
Noboru Kyouno, Nagaokakyo, JP;
Kazumi Honma, Nagaokakyo, JP;
Isao Otsuka, Nagaokakyo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R / ;
U.S. Cl.
CPC ...
381156 ; 381158 ; 181152 ;
Abstract
A speaker system includes an acoustic horn disposed in a cabinet. The acoustic horn is cone-shaped, is composed of a porous sound absorbing material, and has an aperture for interconnecting a space at the rear of a speaker unit and a space in the acoustic horn. A sound absorbing member or a passive radiator is disposed at the aperture.