发明名称 Variable frequency sound attenuator for rotating devices
摘要 A rotatable sound attenuation device is provided comprising a central portion rotatable about a first axis, a radial portion extending outwardly from the central portion and a chamber having a closed first end and a second end opening radially outwardly of the radial portion and defining a second axis therein having a radial component thereto. A piston is disposed within the chamber and is moveable to a location along the second axis in response to a centrifugal force imparted on the piston by rotation of the central portion and the radial portion about the first axis. A biasing member operates to limit movement of the piston along the second axis. A quarter wave chamber is defined by the second, open end of the chamber and the piston and has a sound attenuating length defined by the location of the piston along the second axis of the chamber.
申请公布号 US7708113(B1) 申请公布日期 2010.05.04
申请号 US20090430352 申请日期 2009.04.27
申请人 GM GLOBAL TECHNOLOGY OPERATIONS, INC. 发明人 PRIOR GREGORY P.
分类号 F02M35/00;F01C1/16;F01C1/18;F01C21/00;F01N1/02;F02B27/02;F02B33/00;F02M35/10 主分类号 F02M35/00
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