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:
May. 08, 2018
Filed:
Apr. 23, 2015
Applicant:
Martin Audio Limited, High Wycombe, Buckinghamshire, GB;
Inventors:
Assignee:
Martin Audio Limited, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/02 (2006.01); H04R 1/24 (2006.01); H04R 1/30 (2006.01); H04R 1/26 (2006.01); H04R 9/06 (2006.01);
U.S. Cl.
CPC ...
H04R 1/24 (2013.01); H04R 1/30 (2013.01); H04R 1/26 (2013.01); H04R 9/063 (2013.01);
Abstract
A coaxial loudspeaker apparatus () comprising a first unit () being arranged to propagate sound in a first frequency range; a second unit comprising a first waveguide () arranged to propagate sound in a second frequency range that is higher than the first frequency range, and a second waveguide () arranged to move, during operation, relative to the first waveguide (); wherein the second waveguide () extends substantially in prolongation of the first waveguide (). The invention also extends to a loudspeaker () incorporating the coaxial loudspeaker apparatus ().