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    • 3. 发明授权
    • Internal-combustion piston driving apparatus having a decompression
channel
    • 具有减压通道的内燃活塞驱动装置
    • US4913331A
    • 1990-04-03
    • US261074
    • 1988-10-21
    • Hiromu UtsumiYo KawakamiShinki Ohtsu
    • Hiromu UtsumiYo KawakamiShinki Ohtsu
    • B25C1/08F02B71/04
    • B25C1/08F02B71/04
    • In an internal-combustion piston driving apparatus comprising a housing, a cylinder cover fixed to the housing, a cylinder slidably provided to the housing, a piston reciprocally slidably provided in the cylinder, a combustion chamber defined by the housing, the cylinder, and the piston, a fuel supplying device for supplying fuel to the combustion chamber, and an ignition control device for producing a high voltage to ignite the fuel supplied to the combustion chamber, piston position detector for detecting a position of the piston is provided at the wall of the cylinder between top dead point and bottom dead point of the piston. Besides, a decompression channel is provided so as to connect the combustion chamber placed upper than the top dead point with atmosphere for exhausting a combusted gas in the combustion chamber when the piston passes the piston position detector. The decompression channel is opened and closed by means of slide of the cylinder. In addition, a suction valve is provided to the cylinder cover to be placed lower than bottom dead point of the piston whereby the piston is returned by means of atmospheric pressure after a power stroke of said piston.
    • 在一种内燃活塞驱动装置中,包括壳体,固定到壳体的气缸盖,可滑动地设置在壳体上的气缸,可往复滑动地设置在气缸中的活塞,由壳体,气缸和 活塞,用于向燃烧室供给燃料的燃料供给装置和用于产生高电压以点燃供应到燃烧室的燃料的点火控制装置,设置在用于检测活塞位置的活塞位置检测器, 气缸在活塞的上死点和下死点之间。 此外,当活塞通过活塞位置检测器时,设置减压通道,以将设置在上死点以上的燃烧室与燃烧室中的燃烧气体排出的气体连接。 减压通道通过气缸的滑动而打开和关闭。 此外,吸气阀设置在气缸盖上,以被放置在比活塞的下死点低的位置,在活塞的动力冲程之后活塞通过大气压返回。
    • 8. 发明授权
    • Pulse torque generator and power tool having the same
    • 脉冲扭矩发生器和电动工具具有相同的功能
    • US07216723B2
    • 2007-05-15
    • US11319173
    • 2005-12-28
    • Shinki OhtsuChikai Yoshimizu
    • Shinki OhtsuChikai Yoshimizu
    • B25B21/02
    • F16D37/02B25B21/02F16D5/00F16D2037/002F16D2037/007
    • A pulse torque generator utilizing a magnetic coupling, and an electric power tool provided with the pulse torque generator. The pulse torque generator includes an input shaft extending in its axial direction and having a hollow section providing a hollow space, and an output shaft rotatably provided in the hollow space. A magnetic fluid is encapsulated in a hollow space between the input shaft and output shaft. A magnetic field generating unit is disposed, and magnetic segments are provided in the input shaft. A magnetic fluid provides a magnetic fluid bridge bridging between the input shaft and the output shaft each time the magnetic segment is brought into confrontation with the magnetic field generating unit.
    • 利用磁耦合的脉冲扭矩发生器和设置有脉冲扭矩发生器的电动工具。 脉冲扭矩发生器包括沿其轴向延伸并具有提供中空空间的中空部分的输入轴和可旋转地设置在中空空间中的输出轴。 磁性流体被封装在输入轴和输出轴之间的中空空间中。 设置磁场产生单元,并且在输入轴中设置磁段。 每当磁段与磁场发生单元对抗时,磁性流体在输入轴和输出轴之间提供桥接的磁性流体桥。