Directional loudspeaker unit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 27, 2005
Grant Date -
Nov 27, 2003
app pub date -
Jan 29, 2003
filing date -
Jan 31, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A directional loudspeaker unit for reproducing mid-range audio frequencies, comprising a cone loudspeaker and, disposed forwardly of the surface of the cone of the loudspeaker, a phase plug and a horn, wherein the phase plug and preferably also the horn are arranged co-axially on the axis of the cone, and wherein the phase plug has a central aperture. Preferably the horn has a diffraction slot defined by lateral walls which converge from the entrance (throat) of the horn.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully