Patent · US Expired

Composite material for vibration damping and structural sound damping

US4942080A · kind A · utility

10Cited by

5References

10Claims

0Family size

Assignee

Hoesch Stahl AG · DE

Inventors

Wolfgang Heuel · Dortmund, DE
Jobst H. Meyer Zu Bexten · Soest, DE
Rainer Muller · Penzberg, DE
Klaus Stamm · Wolfsburg, DE

Key dates

Filing date	Mar 6, 1989
Grant date	Jul 17, 1990
Priority date	—
Expiry date	Mar 6, 2009

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31678
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

To extend the temperature range of composite materials the composite material is made up of more than two hard layers which are joined with thin intermediate layers of viscoelastic material where one intermediate layer differs from another intermediate layer in that its softening range lies in a different temperature range so that the damping ranges of the intermediate layers also are different.

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