发明名称 |
Apparatus for acoustic noise reduction of office automation devices utilizing Helmholtz resonance theory |
摘要 |
An acoustic noise reduction apparatus for an office automation device is provided on a surface of an outer shield of the office automation device and has a hole therethrough. The body member of the apparatus defines an internal volume which covers the hole. A control member is operatively connected with the body member and divides the body member into a hollow portion, a duct portion, and a silencer portion. The hollow portion and the duct portion form a Helmholtz resonator within the body member.
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申请公布号 |
US5508477(A) |
申请公布日期 |
1996.04.16 |
申请号 |
US19940361367 |
申请日期 |
1994.12.22 |
申请人 |
RICOH CO., LTD. |
发明人 |
KATO, MASAHIKO;KOZUKA, NAOKI |
分类号 |
G03G15/00;G10K11/16;G10K11/172;H02K5/24;(IPC1-7):G10K11/00 |
主分类号 |
G03G15/00 |
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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