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    • 21. 发明授权
    • Head section for a rotary cutting device
    • 旋转切割装置的头部
    • US08069758B2
    • 2011-12-06
    • US12074619
    • 2008-03-04
    • Jack ZhangGeorge King
    • Jack ZhangGeorge King
    • B26B7/00B26B9/00B26D7/26
    • A01D34/733A01D34/736Y10T83/04Y10T83/9464Y10T407/1914Y10T407/2202
    • A head section for a rotary cutting device includes a body portion that includes a blade passage defined between a blade entrance opening and a blade exit opening. A blade fastening mechanism is positioned in the blade passage and includes a blade engaging member. The blade engaging member is biased by a biasing mechanism to extend across the blade passage at a blade install position. The blade engaging member is movable against the bias to clear the blade passage. A blade having a mount aperture proximate an insertion end thereof is secured to the body portion when the mount aperture occupies the blade mount position and the blade engaging member extends through the mount aperture. The blade can be installed in and removed from the head section without tools, simply by advancing the blade through the blade passage.
    • 用于旋转切割装置的头部包括主体部分,其包括限定在叶片入口开口和叶片出口之间的叶片通道。 叶片紧固机构定位在叶片通道中并且包括叶片接合构件。 叶片接合构件由偏置机构偏置以在叶片安装位置处延伸穿过叶片通道。 刀片接合构件可抵抗偏压移动以清除刀片通道。 当安装孔占据刀片安装位置并且刀片接合构件延伸穿过安装孔时,具有邻近其插入端的安装孔的刀片固定到主体部分。 简单地通过使刀片通过刀片通道,刀片可以安装在没有工具的头部部分中和从刀头部分移除。
    • 28. 发明申请
    • Intelligent valve control methods and systems
    • 智能阀门控制方法和系统
    • US20060174707A1
    • 2006-08-10
    • US11054445
    • 2005-02-09
    • Jack Zhang
    • Jack Zhang
    • G01N29/14G01M3/24G05D7/06
    • G01N29/4418G01M3/243G01N29/14G01N29/222G01N29/46G01N2291/02836H04Q9/00
    • A method for determining a burst pipe that requires immediate feeding-valve closing using acoustic and/or vibration sensors coupled to the pipe lor detecting signals, a microprocessor for analyzing signals from said sensors in real-time, a memory coupled to said microprocessor for storing data, including digital signatures acoustic and/or vibration signatures, as well as an actuator electrically coupled to said microprocessor and mechanically coupled to said feeding-valve. When the sensor signals match stored leak-signatures or when a persistent sensor signal produces no match, the system of the present invention initiates a valve closing. To improve detection, signals from other sensors, i.e. water sensors, smoke detectors, heat sensors or acoustic/vibration sensors mounted on other pipes are also used. Some of the said systems have IP addresses and can communicate over the Internet or wirelessly with others.
    • 一种用于确定使用耦合到管道检测信号的声学和/或振动传感器立即进给阀关闭的爆破管的方法,用于实时分析来自所述传感器的信号的微处理器,耦合到所述微处理器的存储器,用于存储 数据,包括数字签名声学和/或振动特征,以及电耦合到所述微处理器并机械耦合到所述馈送阀的致动器。 当传感器信号匹配存储的泄漏签名时,或当持续传感器信号不匹配时,本发明的系统启动阀关闭。 为了改进检测,还使用来自其他传感器的信号,即水传感器,烟雾探测器,热传感器或安装在其它管道上的声/振传感器。 所述系统中的一些具有IP地址并且可以通过因特网或与他人无线地进行通信。