Acoustic absorber having a slotted horn arranged in a pot

US5760349A · kind A · utility

Assignee

• Dornier GmbH · DE

Inventors

• Ingo Borchers · Überlingen, DE
• Stephan T. Laemmlein · Markdorf, DE
• Peter Bartels · Tucson, US

Key dates

• Filing date: Apr 22, 1996
• Grant date: Jun 2, 1998
• Expiry date: Apr 22, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B64G1/228
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An acoustic absorber is made of a pot-shaped lower part with a pot bottom and side wall as well as an upper part having a horn. The horn projects into the bottom part and tapers in the direction of the pot bottom. Undesired noise is effectively reduced by the absorber. A relatively broadband, and at a given size, a relatively low-frequency absorption effect is achieved that is capable of protecting human hearing from injury or reducing the impact of noise such as on technical equipment and components.