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1. 发明授权

US5052513A Noise reductive resin muffler for exhaust system in combustion engine 失效
标题翻译：用于燃烧发动机排气系统的噪声减少树脂冲击器
公开(公告)号：US5052513A
公开(公告)日：1991-10-01
申请号：US125579
申请日：1987-11-25
申请人： Hideo Yoshikawa , Katsuyoshi Takeuchi , Masami Shimada , Yoshiharu Awaji , Takashi Ikeda , Shunsaku Mitsuno
发明人： Hideo Yoshikawa , Katsuyoshi Takeuchi , Masami Shimada , Yoshiharu Awaji , Takashi Ikeda , Shunsaku Mitsuno
IPC分类号： F01N13/16 , F02B1/04
CPC分类号： F01N13/16 , F01N1/083 , F01N1/084 , F01N13/1888 , F01N2530/18 , F01N2530/26 , F02B1/04
摘要： In order to accomplish the aforementioned and other objects, a resin muffler, according to the invention, is formed of a heat-resistantive synthetic resin having a property of visco-elastic plasticity in a predetermined temperature range. In the visco-elastic temperature range, the motion of the molecular chain segment of the material resin comes to be relaxed to exhibit noise creative pulsating energy dissipation owing to emission as heat energy. Since the resin muffler thus absorbs noise creative energy by dissipation at around the visco-elastic temperature range and transform the energy into the heat energy which may be emitted by radiation.
摘要翻译：为了实现上述目的，根据本发明的树脂消声器由具有在预定温度范围内的粘弹性可塑性的耐热合成树脂形成。在粘弹性温度范围内，材料树脂的分子链段的运动被放宽，由于作为热能的排放而呈现创造性的脉动能量耗散的噪声。因为树脂消声器因此通过在粘弹性温度范围附近的耗散来吸收噪音创造能量，并将能量转化成可能由辐射发射的热能。

2. 发明授权

US4714039A Sewing machine driving system 失效
标题翻译：缝纫机驱动系统
公开(公告)号：US4714039A
公开(公告)日：1987-12-22
申请号：US919177
申请日：1986-10-15
申请人： Masami Shimada
发明人： Masami Shimada
IPC分类号： H02P25/04 , D05B69/12 , D05B69/22 , D05B69/26 , H02P3/06 , H02P25/08 , H02P27/06
CPC分类号： D05B69/22
摘要： A sewing machine driving system comprises: a reluctance motor operatively coupled to a sewing machine main shaft and having a stator and a rotor; a drive circuit for driving the reluctance motor; an angular position detector for detecting the angular position of the rotor with respect to the stator; a needle position detector for detecting the position of a sewing needle connected to the main shaft; a first control unit responsive to a drive command and a signal from the angular position detector for driving the reluctance motor at variable speeds; and a second control unit responsive to a stop command and signals from the angular position detector and the needle position detector for braking the reluctance motor to stop the sewing needle in a prescribed needle position.
摘要翻译：缝纫机驱动系统包括：磁阻电动机，其可操作地联接到缝纫机主轴并具有定子和转子; 用于驱动磁阻电动机的驱动电路; 角位置检测器，用于检测转子相对于定子的角位置; 针位置检测器，用于检测连接到主轴的缝纫针的位置; 响应于驱动命令的第一控制单元和来自角位置检测器的用于以可变速度驱动磁阻电动机的信号; 以及第二控制单元，其响应于停止命令和来自角位置检测器和针位置检测器的信号，用于制动磁阻电动机，以将缝纫针停止在规定的针位置。

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