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    • 3. 发明授权
    • Field joint
    • 现场联合
    • US06264871B1
    • 2001-07-24
    • US09231518
    • 1999-01-14
    • Douglas Thomas MullenIain Smith
    • Douglas Thomas MullenIain Smith
    • B29C6554
    • F16L13/0272F16L58/181F16L59/20
    • The method of forming a field joint around the bare joint of two joined insulation covered pipes includes providing a first angular cut back in the coating to expose the end of a pipe and providing a second cut back in the coating to provide an annular band of the coating of a lesser diameter than the coating on the pipe. A thin coating of polyurethane may then be applied over the first and second cut backs and a recess provided in the band of coating. A mould may then be secured around the lesser diameter band, and polyurethane pumped into the mould in a sufficient amount to form a field joint which extends into the second cut back and lies flush with the coating of the pipes so as to allow for reeling and laying of the pipe without snagging. The field joint can be located around the bare joint and includes a polyurethane infill recessed into the insulated coating of the pipes such that infill lies flush with the surface of the coating on the pipes.
    • 在两个连接的绝缘覆盖管的裸露接头周围形成场接头的方法包括在涂层中提供第一角度切割以露出管的端部并且在涂层中提供第二切口以提供环形带 涂层直径小于管道上的涂层。 然后可以在第一和第二切割后部上施加薄涂层的聚氨酯,并且在涂层带中设置凹部。 然后可以将模具固定在较小直径的带周围,并且聚氨酯以足够的量泵入模具中以形成延伸到第二切割回并且与管的涂层齐平的场接头,以便允许卷取和 铺设管道不堵塞。 场接头可以位于裸露接头周围,并且包括凹入到管道的绝缘涂层中的聚氨酯填料,使得填充物与管道上的涂层的表面齐平。
    • 6. 发明授权
    • Simulation of digital circuits
    • 数字电路仿真
    • US08234104B2
    • 2012-07-31
    • US12103770
    • 2008-04-16
    • John Joseph Bergkvist, Jr.Serafino BuetiFrancis A. KampfDouglas Thomas Massey
    • John Joseph Bergkvist, Jr.Serafino BuetiFrancis A. KampfDouglas Thomas Massey
    • G06F17/50
    • G06F17/5022
    • A method for simulating a circuit. The method includes, in response to a first mode change triggering event at a first time point and in response to a first data transfer triggering event at a second time point after the first time point, generating a random value of at least a first random value and a second random value. In response to the generated random value being the first random value, a first input value of an input of the circuit is assigned to an output of the circuit. In response to the generated random value being the second random value, an output value of the output of the circuit is maintained. In response to a second data transfer triggering event at a third time point after the second time point, a second input value of the input of the circuit is assigned to the output of the circuit.
    • 一种模拟电路的方法。 该方法包括响应于在第一时间点的第一模式改变触发事件和响应于在第一时间点之后的第二时间点的第一数据传输触发事件,生成至少第一随机值的随机值 和第二随机值。 响应于产生的随机值是第一随机值,将电路的输入的第一输入值分配给电路的输出。 响应于产生的随机值是第二随机值,维持电路的输出的输出值。 响应于在第二时间点之后的第三时间点的第二数据传输触发事件,电路的输入的第二输入值被分配给电路的输出。