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. 02, 2003
Filed:
Apr. 28, 1999
Applicant:
Inventors:
Tsutomu Yoshioka, Kobe, JP;
Yasuhiro Fukunaka, Hyogo-ken, JP;
Hiroshi Kubota, Nishinomiya, JP;
Ken Iwayama, Sanda, JP;
Assignee:
TOA Corporation, Kobe, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 1/02 ;
U.S. Cl.
CPC ...
H04R 1/02 ;
Abstract
An electroacoustic transducer of a horn loudspeaker emits sound, which is supplied through a sound conduit pipe to a horn and propagated out of the horn through a mouth of the horn. The sound conduit pipe is coupled to the horn via a rectangular opening in the upper one of the upper and lower walls forming the horn, to thereby provide a linear sound source for the loudspeaker. The location where the sound conduit pipe is coupled to the horn and/or the tilt angle of the sound conduit pipe with respect to the horn may be varied to control the sound radiation characteristic of the loudspeaker.