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    • 14. 发明申请
    • Micro neutron detectors
    • 微中子探测器
    • US20070018110A1
    • 2007-01-25
    • US11191874
    • 2005-07-28
    • Douglas McGregorMartin OhmesJohn Shultis
    • Douglas McGregorMartin OhmesJohn Shultis
    • G01T3/08
    • G01T3/00G01T1/167G01T1/185G21C17/108
    • Micro neutron detectors include relatively small pockets of gas including a neutron reactive material. During use, under a voltage bias in a neutron environment, neutron interactions in the neutron reactive material are seen to occur. Ultimately, electron-ion pairs form and positive ions drift to a cathode and electrons to the anode. The motion of charges then produces an induced current that is sensed and measurable, thereby indicating the presence of neutrons. Preferred pocket volumes range from a few cubic microns to about 1200 mm3; neutron reactive materials include fissionable, fertile or fissile material (or combinations), such as 235U, 238U, 233U, 232Th, 239Pu, 10B, 6Li and 6LiF; gasses include one or more of argon, P-10, 3He, BF3, BF3, CO2, Xe, C4H10, CH4, C2H6, CF4, C3H8, dimethyl ether, C3H6 and C3H8. Arrangements include two- and three-piece sections, arrays (including or not triads capable of performing multiple detecting functions) and/or capillary channels.
    • 微中子检测器包括相当小的气体袋,包括中子反应性材料。 在使用过程中,在中子环境中的电压偏置下,中子反应性材料中的中子相互作用被认为是发生的。 最终,电子 - 离子对形成,正离子漂移到阴极和电子到阳极。 电荷的运动然后产生感测电流并被测量,从而指示中子的存在。 优选的袋体积为几立方微米至约1200mm 3; 中子反应性材料包括可裂变的,可育的或可裂变的材料(或组合),例如,235,U, 第二,第二,第二,第二,第二,第二,第二,第二,第二,第二,第二,第二, 气体包括氩气,P-10,He,BF 3,BF 3,CO 2 2中的一种或多种 >,Xe,C 4 H 10,CH 4,C 2 H 6,/ ,CF 4,C 3 H 8,二甲基醚,C 3 H 6, 3>和< 3> 8< 8> 安排包括两部分和三部分部分,阵列(包括或不具有执行多个检测功能的三元组)和/或毛细管通道。
    • 17. 发明申请
    • Lifting Assemblies Including Trapezoidal Strong Back Beam Systems
    • 提升组件包括梯形强后梁系统
    • US20110036799A1
    • 2011-02-17
    • US12744253
    • 2008-11-24
    • Douglas McGregor McKay
    • Douglas McGregor McKay
    • B66C9/10B66C17/00B66C19/00
    • B66C9/02B66C7/02B66C9/16
    • Bridge crane assemblies, trapezoidal strong back beam systems and carriages for bridge crane assemblies are disclosed. According to some embodiments, a bridge crane assembly comprises a trapezoidal beam and a bridge attachable to an underside of the trapezoidal beam. The bridge comprises an attachment means for supporting a lifting device for the crane assembly. At least one guide track is attachable to a support structure and at least one carriage is longitudinally movable along the at least one guide track. Each carriage comprises a pair of spaced apart mounting plates and a plurality of rollers rotatably mounted to the mounting plates in a substantially vertical orientation. An axle extends between and is pivotally secured to the mounting plates. A displacement arm has a first end pivotally coupled to the axle and at least one second end for pivotal connection to the bridge.
    • 公开了用于桥式起重机组件的桥式起重机组件,梯形强力后梁系统和滑架。 根据一些实施例,桥式起重机组件包括梯形梁和可附接到梯形梁的下侧的桥。 桥梁包括用于支撑起重机组件的提升装置的附接装置。 至少一个导轨可附接到支撑结构,并且至少一个滑架沿着至少一个导轨可纵向移动。 每个托架包括一对间隔开的安装板和多个可旋转地以基本竖直的方向安装到安装板的辊。 一个轴在安装板之间延伸并枢转地固定到安装板上。 位移臂具有枢转地联接到轴的第一端和用于枢转连接到桥的至少一个第二端。
    • 18. 发明申请
    • Method and system for high-speed, 3D imaging of optically-invisible radiation and detector and array of such detectors for use therein
    • US20050017181A1
    • 2005-01-27
    • US10922186
    • 2004-08-19
    • Kimberlee KearfottDouglas McGregor
    • Kimberlee KearfottDouglas McGregor
    • G01T1/185G01T1/20G02B27/12H01J47/00H01L27/146H01L31/00
    • H01L27/14658
    • A high-speed, three-dimensional, gamma-ray imaging method and system as well as a detector and array of such detectors for use therein are provided which characterize radioactivity distributions in nuclear and radioactive waste and materials facilities by superimposing radiation images on a view of the environment using see-through display screens or shields to provide a stereoscopic view of the radiation. The method and system provide real-time visual feedback about the locations and relative strengths of radioactive sources. The method and system dynamically provide continuous updates to the displayed image illustrating changes, such as source movement. A pair of spaced gamma-ray cameras of a detector subsystem function like “gamma eyes”. A pair of CCD cameras may be coupled to the detector subsystem to obtain information about the physical architecture of the environment. A motion tracking subsystem is used to generate information on the user's position and head orientation to determine what a user “sees”. The invention exploits the human brain's ability to naturally reconstruct a 3D, stereoscopic image from 2D images generated by two “imagers” separated by a known angle(s) without the need for 3D mathematical image reconstruction. The method and system are not only tools for minimizing human exposure to radiation thus assisting in ALARA (As Low As Reasonably Achievable) planning, but also are helpful for identifying contamination in, for example, laboratory or industrial settings. Other optically-invisible radiation such as infrared radiation caused by smoldering fires may also be imaged. Detectors are manufactured or configured in curvilinear geometries (such as hemispheres, spheres, circles, arcs, or other arrangements) to enable sampling of the ionizing radiation field for determination of positional activity (absolute or relative amounts of ionizing radiation) or spectroscopy (energy distributions of photons). More than one detector system may be used to obtain three-dimensional information. The detector systems are specifically suitable for direct visualization of radiation fields.