Patent · US Active

Passive directional acoustic radiating

US8358798B2 · kind B2 · utility

10Cited by

27References

10Claims

0Family size

Inventors

Christopher B. Ickler · Sudbury, US
Joseph Jankovsky · Holliston, US
Eric S. Johanson · Millbury, US
Richard Saffran · Boston, US

Key dates

Filing date	May 30, 2012
Grant date	Jan 22, 2013
Priority date	—
Expiry date	May 30, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH04R1/2819
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An acoustic apparatus, including an acoustic driver, acoustically coupled to a pipe to radiate acoustic energy into the pipe. The pipe includes an elongated opening along at least a portion of the length of the pipe through which acoustic energy is radiated to the environment. The radiating is characterized by a volume velocity. The pipe and the opening are configured so that the volume velocity is substantially constant along the length of the pipe.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.