Patent · US Expired

Mass and spring systems for soundproofing

US5088576A · kind A · utility

25Cited by

7References

14Claims

0Family size

Assignee

E.A.P. Akustik GmbH · DE

Inventors

Hans-Hermann Potthoff · Leimen, DE
Ingolf Scheffler · Wiesloch, DE
Klaus Ruch · Wiesloch, DE
Rainer Joesel · Karlsruhe, DE

Key dates

Filing date	Jul 12, 1989
Grant date	Feb 18, 1992
Priority date	—
Expiry date	Jul 12, 2009

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60R13/08
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A mass and spring system for soundproofing, particularly in vehicles, comprises a bending-soft heavy plastic layer as the mass and a soft layer as the spring, which is applied to the sound radiating surface or wall and which is a gel of 10 to 50% by weight of an organic polymer or silicone polymer and 50 to 90% by weight of a plasticizer compatible therewith, which at room temperature has a modulus of elasticity E'.ltoreq.5.times.10.sup.5 Pa and an internal loss factor d.gtoreq.0.5.

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