Patent · US Active

Acoustic diaphragm

US9769570B2 · kind B2 · utility

0Cited by

22References

30Claims

0Family size

Assignee

Bose Corporation · US

Inventors

Agota F. Fehervari · Lexington, US
Shawn J. Prevoir · Northborough, US
Wit Bushko · Milford, US

Key dates

Filing date	Mar 31, 2015
Grant date	Sep 19, 2017
Priority date	—
Expiry date	Mar 31, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2307/029
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

An acoustic diaphragm made at least in part from an expanded material. The expanded material includes one or more of cellulose, synthetic fibers and glass fibers. The expanded material has more than about 55% by volume voids.

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