Title:
LOW SOUND SPEED DAMPING MATERIALS AND METHODS OF USE
Document Type and Number:
WIPO Patent Application WO1999048951
Kind Code:
A3
Abstract:
A composition for reducing vibrations, including both damping structure borne vibrations and reducing radiated airborne noise. The composition is either a mixture of at least two different granular materials, or is a granular material having a bulk sound speed of less than 90 m/s. The damping properties of a mixture can be calculated from the bulk densities and stiffnesses of its individual components.
Inventors:
FRICKE J ROBERT
Application Number:
PCT/US1999/006340
Publication Date:
December 09, 1999
Filing Date:
March 23, 1999
Export Citation:
Assignee:
EDGE INNOVATIONS & TECHNOLOGY (US)
International Classes:
A63B59/00; A63C5/075; A63C5/12; F16F7/01; A63B6/00; (IPC1-7): E04C3/46; E04B1/98; E04H9/02
Foreign References:
| US4923034A | 1990-05-08 | |||
| US4706788A | 1987-11-17 | |||
| US5775049A | 1998-07-07 | |||
| US5820348A | 1998-10-13 |
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