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21. 发明授权

US06687391B1 Adjustable, rotatable finger guide in a tenprint scanner with movable prism platen 失效
标题翻译：手指引导单元，用于带可移动压板的指纹扫描仪
公开(公告)号：US06687391B1
公开(公告)日：2004-02-03
申请号：US09461344
申请日：1999-12-15
申请人： Walter Guy Scott , Dean Fedele , John F. Carver
发明人： Walter Guy Scott , Dean Fedele , John F. Carver
IPC分类号： G06K900
CPC分类号： G06K9/00026
摘要： A scanning device for electronically capturing a fingerprint image, employing a finger guide unit and a platen. The finger guide unit positions a finger for scanning by means of a gap into which the finger is placed. The guide maintains the finger within the print scanning range when used in conjunction with a movable platen. The guide unit is rotatable allowing the guide to be moved to expose the whole movable platen. The finger guide unit has two guide plates disposed adjacent one another creating a gap. The gap width is adjustable by means of an adjustment device, allowing fingers of any size to be properly positioned and guided within the scanner reading range. The guide plates each have an edge lined with low-friction material which contacts the finger when in use. The guide plates each have an extension which serves as a handle for raising the guide unit and as a hanger for suspending the guide unit above the platen for use. The guide plates also have an alignment rod disposed between them to ensure stabilization and alignment.
摘要翻译：一种用于电子捕获指纹图像的扫描装置，其使用手指引导单元和台板。手指引导单元借助于放置手指的间隙来定位用于扫描的手指。当与可动压板结合使用时，引导件将手指保持在打印扫描范围内。引导单元是可旋转的，允许引导件移动以暴露整个可移动的压板。手指引导单元具有彼此相邻设置的两个引导板，产生间隙。间隙宽度可通过调节装置调节，允许任何尺寸的手指在扫描仪阅读范围内正确定位和引导。引导板各自具有内衬有低摩擦材料的边缘，其在使用时接触手指。引导板各自具有用作提升引导单元的手柄的延伸部和用于将引导单元悬挂在压板上使用的悬挂件。引导板还具有设置在它们之间的对准杆，以确保稳定和对准。

22. 外观设计

USD478905S1 Fingerprint scanner 失效
标题翻译：指纹扫描仪
公开(公告)号：USD478905S1
公开(公告)日：2003-08-26
申请号：US29164704
申请日：2002-07-31
申请人： Michael V. Byrne , George William McClurg , John M. Van Dusen , John F. Carver , Joseph L. Navarro, Jr.
设计人： Michael V. Byrne , George William McClurg , John M. Van Dusen , John F. Carver , Joseph L. Navarro, Jr.

23. 发明授权

US4825169A Ultrasonic streaming current detector 失效
标题翻译：超声流式电流检测器
公开(公告)号：US4825169A
公开(公告)日：1989-04-25
申请号：US71297
申请日：1987-07-09
申请人： John F. Carver
发明人： John F. Carver
IPC分类号： G01N27/60
CPC分类号： G01N27/60
摘要： A streaming current detector includes an optical shutter rotated by the shaft of the motor which reciprocates a piston between electrodes in a bore containing sample fluid. An electronic synchronous detector is controlled by the output of a light detector whose source is interrupted by the optical shutter. The alternating current signals from the electrodes are connected to an operational amplifier having its inverting input connected to its output solely by a capacitor so that the output voltage is proportional to the charge of the fluid.
摘要翻译：流动电流检测器包括由马达的轴旋转的光学快门，该活门在包含样品流体的孔中的电极之间往复运动。电子同步检测器由其光源被光学快门中断的光检测器的输出控制。来自电极的交流信号连接到运算放大器，其运算放大器的反相输入仅由电容器连接到其输出，使得输出电压与流体的电荷成比例。

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