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    • 1. 发明申请
    • Electronic safety and arming unit
    • 电子安全和布防单位
    • US20060070547A1
    • 2006-04-06
    • US10548427
    • 2004-03-05
    • David CombesDavid King
    • David CombesDavid King
    • F42C15/34
    • F42C15/40F42C15/34
    • An electronic safety and arming unit comprises a micro electromechanical system (MEMS) shutter device. The shutter (18) is suspended by thin lightweight arms and hinges, all formed by silicon processing of SOI substrates and includes holding latches for holding the shutter (18) in the closed position. The holding latches may be released by an electrothermal actuator. The shutter (18) separates an initiator section from an explosive train (6) of munitions such as shells, thereby providing safety until the shell is fired and away from its start point. After firing, the shutter (18) is opened ready for the main explosive to be detonated by the initiator (3). The shutter (18) may be suspended by a compliant displacement multiplier and may include an electrothermal actuator such as an electrically heatable bent beam. Heating of the beam causes movement of a shutter blade from a shut condition covering a firing aperture to an open condition. Alternatively the shutter (18) may operate by inertial centrifugal forces generated by a spinning munition. The shutter (18) may include latches for retaining the shutter in its open position.
    • 电子安全和布防装置包括微机电系统(MEMS)快门装置。 闸门(18)由薄的轻质臂和铰链悬挂,全部由SOI基板的硅加工形成,并且包括用于将挡板(18)保持在关闭位置的保持闩锁。 保持闩锁可以由电热致动器释放。 挡板(18)将起动器部分与诸如壳的弹药的爆炸火车(6)分开,从而提供安全性,直到壳体被击发并远离其起点。 在点火之后,快门(18)打开准备好,主要的爆炸物被起动器(3)引爆。 快门(18)可以由顺应性位移乘数悬挂,并且可以包括电热致动器,例如电可加热弯曲梁。 梁的加热导致快门叶片从覆盖击球孔的关闭状态移动到打开状态。 或者,快门(18)可以通过由旋转弹药产生的惯性离心力来操作。 快门(18)可以包括用于将快门保持在其打开位置的闩锁。
    • 9. 发明申请
    • System and method for measuring interaction of loads
    • US20080034895A1
    • 2008-02-14
    • US11503766
    • 2006-08-14
    • Shaun David McCarthyMichael Andrew DalyAlan SimpsonCiaran MythenMartin FloodGuillaume ReuxDavid King
    • Shaun David McCarthyMichael Andrew DalyAlan SimpsonCiaran MythenMartin FloodGuillaume ReuxDavid King
    • G01L3/02
    • G01L3/10G01M13/025
    • A test system for measuring a rotary load comprises a stepper motor drives a gear box that is mounted at one end of a frame. A torque sensor provides a measurement signal transmission. The gear box's output shaft is connected to one of the torque sensor's stubs by means of a universal joint coupling. On the other side of the torque sensor a second universal joint coupling connects the sensor to a stainless steel shaft. A low friction flange bearing is used to provide support for the shaft. An angle encoder is disposed on the end of the shaft distal to the gear box. The gear box's output shaft, the torque sensor's cylindrical shaft hubs and associated couplings are arranged such that they are directly aligned with the shaft. The test system has been designed to take automated torque and angle readings from a shaft capable of rotary motion. The measurement arm configuration with the stepper motor directly connects the torque and angle sensors to a PC based data acquisition card for acquisition and processing of data. The system operates according to a method used to make a true torque measurement of a rotary actuated shaft or wheel in a process where a first data set is acquired with the system unloaded as the shaft or wheel is actuated through the defined travel path. The actuation force applied by the stepper motor is accurately controlled through a computer interface. Torque data is measured at each angular step as the wheel is actuated in a first direction. Torque data is then measured at each angular step as the wheel is actuated in the opposite direction. A load is then placed on the test system. With the load on the system, torque data is acquired/measured at each angular step through the defined travel path. Torque data is then measured at each angular step as the wheel is actuated in the opposite direction through the defined travel path. Ultimately, the true torque, i.e. torque less the effects of friction and the system baseline mechanical profile, is determined by adjusting measurement data to virtually eliminate these two effects.