Patent · US Active

Sound generator for mounting on a vehicle to manipulate vehicle noise

US9997152B2 · kind B2 · utility

2Cited by

13References

17Claims

0Family size

Assignee

Eberspächer Exhaust Technology GmbH · DE

Inventors

Manfred Nicolai · Eßlingen, DE
Thomas Schmidt · Hannover, DE
Jan Krüger · Centurion, ZA

Key dates

Filing date	Nov 2, 2016
Grant date	Jun 12, 2018
Priority date	—
Expiry date	Nov 2, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH04R2499/13
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A sound generator (100) mounts on a vehicle to manipulate vehicle noise originating from a vehicle operated by an internal combustion engine. The sound generator (100) includes a casing (110), a loudspeaker (120), and at least one pressure compensation valve (130). The loudspeaker (120) and the casing (110) together thereby enclose a volume (115). Further, the pressure compensation valve (130) couples the volume (115) enclosed by the loudspeaker (120) and the casing to an outside of the casing (110). The pressure compensation valve (130) thereby extends through a plane in which the loudspeaker (120) is located. A system (200) for manipulating sound waves propagating through exhaust systems of vehicles driven by an internal combustion engine uses the above sound generator (100).

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