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1. 发明授权

US5509148A Three-way trap elbow and cleanout system 失效
标题翻译：三通陷阱弯头和清洁系统
公开(公告)号：US5509148A
公开(公告)日：1996-04-23
申请号：US248755
申请日：1994-05-25
申请人： David S. Steele , Robert R. Taylor
发明人： David S. Steele , Robert R. Taylor
IPC分类号： E03C1/12 , E03C1/284 , E03C1/302 , F16L41/02 , E03C1/30
CPC分类号： E03C1/122 , E03C1/284 , E03C1/302 , F16L41/023 , Y10S4/07 , Y10T137/4259
摘要： A three-way elbow for connection between a trap and a waste line is provided with a valved access ending in a plug. Removal of the plug allows attachment of a first end of a hose in its place. The second end of the hose is held above the water level of a sink by attachment to a board that fits over the sink. A snake inserted through the hose is directed by passageways in the elbow to the waste line. A container is mounted between a faucet for the sink and the second end of the hose so that disinfectant in the container can be carried into the hose. Brushes are mounted in the second end of the hose so as to aid in cleaning the snake as it is withdrawn.
摘要翻译：用于连接陷阱和废物管线的三通弯头设置有插头中的带阀门的接入端。插头的拆除允许将软管的第一端附接到其位置。软管的第二端通过连接到安装在水槽上的板上而被保持在水槽的水位之上。通过软管插入的蛇通过肘管中的通道被引导到废物管线。容器安装在用于水槽的水龙头和软管的第二端之间，使得容器中的消毒剂能够被运送到软管中。刷子安装在软管的第二端，以帮助在撤回时清洁蛇。

2. 发明授权

US4940944A Cathodic protection analyzer in which the fundamental and odd harmonics of a power line frequency are removed 失效
标题翻译：消除电力线频率的基波和奇次谐波的阴极保护分析仪
公开(公告)号：US4940944A
公开(公告)日：1990-07-10
申请号：US311506
申请日：1989-02-16
申请人： David S. Steele , Randolph K. Armstrong , David E. Snider
发明人： David S. Steele , Randolph K. Armstrong , David E. Snider
IPC分类号： C23F13/04 , G01N17/02 , G01R19/25
CPC分类号： C23F13/04 , G01N17/02 , G01R19/25
摘要： An instrument for measuring cathodic protection voltage levels receives a signal representative of an externally applied, full-wave rectified power line frequency cathodic protection potential, which is subject to electrical interference. The fundamental power line frequency component and odd harmonics of that fundamental component are removed to produce a filtered signal. Selected parameters of the filtered signal are measured to provide an indication of the adequacy of the cathodic protection potential.
摘要翻译：用于测量阴极保护电压电平的仪器接收代表外部施加的全波整流电源线频率阴极保护电位的信号，该电压受到电气干扰。去除基本分量的基本电力线频率分量和奇次谐波以产生滤波信号。测量滤波信号的所选参数以提供阴极保护电位的充分性的指示。

3. 发明授权

US5194816A Method and apparatus for locating electrical shorts between concealed conductive objects 失效
标题翻译：用于定位导电对象之间的电气短路的方法和装置
公开(公告)号：US5194816A
公开(公告)日：1993-03-16
申请号：US600464
申请日：1990-10-19
申请人： David S. Steele
发明人： David S. Steele
IPC分类号： G01V3/02 , G01R31/02
CPC分类号： G01R31/025
摘要： A method for determining the spacial relationship between concealed elongated conductors wherein a test signal is coupled to a first concealed conductor and conductively coupled to a second adjacent concealed conductor. The relative direction of the current of the test signal on the second conductor is measured on opposite sides of the first conductor. An indication of the relative directions of the current of the test signal on opposite sides of the first conductor can be used to determine if the two conductors are separated or in contact with each other. If the relative direction of the test signal radiated from the second conductor is the same on opposite sides of the first conductor, then the two conductors are separated from each other. If the relative direction of the test signal radiated from the second conductor is opposite on opposite sides of the first conductor, then the two conductors are in contact with each other.
摘要翻译：一种用于确定隐藏的细长导体之间的空间关系的方法，其中测试信号耦合到第一隐藏导体并且导电地耦合到第二相邻隐藏导体。第二导体上的测试信号的电流的相对方向在第一导体的相对侧被测量。可以使用在第一导体的相对侧上的测试信号的电流的相对方向的指示来确定两个导体是否分离或彼此接触。如果从第二导体辐射的测试信号的相对方向在第一导体的相对侧相同，则两个导体彼此分离。如果从第二导体辐射的测试信号的相对方向在第一导体的相对侧相反，则两个导体彼此接触。

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