发明名称 |
Noise reducing resonator apparatus |
摘要 |
The present noise reducing apparatus includes resonators which have a small and variable volume as well as a high admittance. For this purpose the resonators constitute vibrating systems having at least one volume wherein the pressure is reduced below atmospheric pressure to provide a reduced volume stiffness. The volume is confined by wall elements having a very small or a negative spring rate under reduced pressure inside said volume.
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申请公布号 |
US4149612(A) |
申请公布日期 |
1979.04.17 |
申请号 |
US19770812617 |
申请日期 |
1977.07.05 |
申请人 |
MESSERSCHMITT-BOELKOW-BLOHM GMBH |
发明人 |
BSCHORR, OSKAR |
分类号 |
G10K11/172;(IPC1-7):G10K11/10 |
主分类号 |
G10K11/172 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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