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    • 81. 发明申请
    • METER BAYONET TOOL AND METHOD OF TESTING TENSION OF METER SOCKET JAWS
    • 仪表BAYONET工具和测试夹具张力的方法
    • US20140157907A1
    • 2014-06-12
    • US13709178
    • 2012-12-10
    • David A. JohnsonThomas L. Clarke
    • David A. JohnsonThomas L. Clarke
    • G01L1/00
    • G01L5/0057
    • A device for testing tension between the jaws of a meter socket in an electric meter base comprising an aluminum blade having dimension similar to a blade of an electric meter designed to fit in the meter socket jaw, the device further comprising a handle having a proximal end and a distal end, the blade rigidly supported within the distal end, the handle having a weight which is distributed along the handle so that sufficient torque is exerted on the blade when the blade is inserted in a meter socket to be tested that the device rotates downwardly if there is insufficient tension. A method of testing tension in a meter socket using the device is also disclosed.
    • 一种用于测试电表基座中的仪表插座的钳口之间的张力的装置,包括具有类似于设计成安装在所述仪表插座爪中的电表的叶片的尺寸的铝叶片,所述装置还包括手柄,所述手柄具有近端 并且远端,刚性地支撑在远端内的刀片,手柄具有沿着手柄分布的重物,使得当刀片插入待测试的仪表插座中时,足够的扭矩施加在刀片上,以使得设备旋转 如果张力不足,请向下。 还公开了使用该装置测量仪表插座中的张力的方法。
    • 84. 发明授权
    • Curved lenses configured to decode three-dimensional content
    • 被配置为解码三维内容的弯曲透镜
    • US08419181B2
    • 2013-04-16
    • US13454982
    • 2012-04-24
    • David A. JohnsonJames Pritts
    • David A. JohnsonJames Pritts
    • G02C7/12
    • G02B5/305G02B27/2228G02C7/12Y10T156/1026
    • Curved lenses configured to decode three dimensional content and method of fabricating the same. The lenses comprise a polyvinylalcohol polarizer film or similar type of material laminated with triacetate or similar type material on one or both sides, wherein the polarizer film has a polarizing efficiency equal to or exceeding 99% and a transmittance percentage equal to or exceeding 35% and a retarder film (e.g., norbornene copolymer resin) laminated on a front surface of the polyvinylalcohol polarizer film laminated with triacetate and aligned to produce a desired circular polarization responsive to specified retardation wavelengths. Thermoforming and press polishing techniques may be used to fabricate/curve the blanks into lenses. The lenses (optical elements) may be used in an injection molding process to add thickness.
    • 构造成解码三维内容的弯曲透镜及其制造方法。 透镜包括在一侧或两侧上与三乙酸酯或类似材料层压的聚乙烯醇偏光膜或类似材料,其中偏振膜具有等于或超过99%的偏振效率和等于或超过35%的透光率百分比, 层叠在与三乙酸酯层叠的聚乙烯醇偏光膜的前表面上的缓凝剂膜(例如降冰片烯共聚物树脂),并对准以响应于指定的延迟波长产生期望的圆形极化。 热成型和压制抛光技术可用于制造/将坯料曲线成镜片。 透镜(光学元件)可以用于注射成型工艺以增加厚度。
    • 87. 发明申请
    • ROBOTIC MOWER AREA COVERAGE SYSTEM
    • 机动车场区域覆盖系统
    • US20120029755A1
    • 2012-02-02
    • US12845274
    • 2010-07-28
    • David A. Johnson
    • David A. Johnson
    • G05D1/00
    • A01D34/008G05D1/0219G05D1/0265G05D2201/0208
    • A robotic mower area coverage system includes a load sensor on the robotic mower signaling load on a cutting blade motor, a boundary sensor on the robotic mower indicating the distance from the sensor to a boundary wire, a timer on the robotic mower indicating when the robotic mower last used a specified boundary coverage, and a vehicle control unit on the robotic mower selecting the type of area coverage based on input from the load sensor, the boundary sensor and the timer, and commanding a pair of traction drive motors to drive the robotic mower using the selected type of area coverage.
    • 机器人割草机区域覆盖系统包括在切割刀片电动机上的机器人割草机信号负载上的负载传感器,机器人割草机上的边界传感器,指示从传感器到边界线的距离,机器人割草机上的计时器,指示何时机器人 割草机最后使用指定的边界覆盖,而机器人割草机上的车辆控制单元根据来自负载传感器,边界传感器和定时器的输入选择区域覆盖类型,并指令一对牵引驱动电机驱动机器人 割草机使用所选类型的区域覆盖。