Invention Grant
- Patent Title: Sound barrier for audible acoustic frequency management
- Patent Title (中): 声音音频管理声屏障
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Application No.: US12746967Application Date: 2008-12-16
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Publication No.: US08132643B2Publication Date: 2012-03-13
- Inventor: Ali Berker , Richard W. Greger , Manish Jain , Marie Alsohyna ep Lesuffleur , Sanat Mohanty
- Applicant: Ali Berker , Richard W. Greger , Manish Jain , Marie Alsohyna ep Lesuffleur , Sanat Mohanty
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Lucy C. Weiss; Adam Bramwell
- International Application: PCT/US2008/086918 WO 20081216
- International Announcement: WO2009/085724 WO 20090709
- Main IPC: B64F1/26
- IPC: B64F1/26
Abstract:
A sound barrier comprises a substantially periodic array of structures disposed in a first medium having a first density, the structures being made of a second medium having a second density different from the first density, wherein one of the first and second media is a viscoelastic medium having a speed of propagation of longitudinal sound wave and a speed of propagation of transverse sound wave, the speed of propagation of longitudinal sound wave being at least about 30 times the speed of propagation of transverse sound wave, and wherein the other of the first and second media is a viscoelastic or elastic medium.
Public/Granted literature
- US20100288580A1 SOUND BARRIER FOR AUDIBLE ACOUSTIC FREQUENCY MANAGEMENT Public/Granted day:2010-11-18
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