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    • 7. 发明申请
    • SURFACE TEMPERATURE-RESPONSIVE SWITCH USING SMART MATERIAL ACTUATORS
    • 表面温度响应开关使用智能材料执行器
    • US20160093186A1
    • 2016-03-31
    • US14855637
    • 2015-09-16
    • GM GLOBAL TECHNOLOGY OPERATIONS LLC
    • Nicholas W. Pinto, IVRichard J. SkurkisNancy L. Johnson
    • G08B17/06H01H37/32
    • H01H37/323H01H2225/012
    • Malfunction or failure of mechanical, electrical, and electro-mechanical equipment, for example, equipment used in manufacturing operations, is often preceded by an increase in the operating temperature of at least some portion of the equipment. A temperature-sensitive, active material-containing actuator is pre-selected to operate at a pre-determined temperature indicative of impending equipment failure and placed in thermal contact with the equipment. If the equipment achieves the pre-selected temperature the actuator signals this by closing an externally-powered circuit to enable or provide a suitable alarm signal. Additionally, the actuator may close a second circuit connected to a machine controller to alert the machine controller to take some pre-programmed action. Selected actuators are based on shape memory alloys (SMA) adapted to operate over a temperature range sufficient to encompass the expected range of pre-determined temperatures.
    • 机械,电气和机电设备(例如制造操作中使用的设备)的故障或故障往往在设备的至少一部分工作温度升高之前。 预先选择含温度敏感的含活性材料的致动器以在指示即将到来的设备故障并且与设备热接触的预定温度下操作。 如果设备达到预先选定的温度,则执行器通过关闭外部供电的电路来发出信号,以启用或提供合适的报警信号。 此外,致动器可以关闭连接到机器控制器的第二电路,以警告机器控制器采取一些预编程的动作。 所选择的执行器基于形状记忆合金(SMA),其适于在足以包含预定温度的预期范围的温度范围内操作。
    • 8. 发明申请
    • Normally Closed Dome Switch
    • 常闭圆顶开关
    • US20110233037A1
    • 2011-09-29
    • US12732889
    • 2010-03-26
    • Edward A. Wilkolaski
    • Edward A. Wilkolaski
    • H01H13/76
    • H01H13/803H01H2203/038H01H2203/044H01H2205/018H01H2205/03H01H2225/012H01H2225/014H01H2231/032
    • A normally closed dome switch comprises a printed circuit board including a switch trace having first and second contact areas electrically insulated from one another, and a conductive switch dome having a central portion spaced from the printed circuit board and a plurality of contacting portions extending from the central portion such that each of the first and second contact areas is contacted by at least one of the contacting portions when the switch dome is unpressed such that the unpressed switch dome forms a closed switch between the first and second contact areas. The switch dome is resiliently pressable to urge the central portion toward the printed circuit board and pivot the contacting portions about a corresponding fulcrum to remove the plurality of contacting portions of the switch dome from contact with at least one of the first and second contact areas to open the switch.
    • 常闭圆顶开关包括印刷电路板,其包括具有彼此电绝缘的第一和第二接触区域的开关轨迹,以及具有与印刷电路板间隔开的中心部分的导电开关拱顶和从该印刷电路板延伸的多个接触部分 中心部分,使得当开关穹顶未被按压时,第一接触区域和第二接触区域中的每一个与至少一个接触部分接触,使得未按压的开关穹顶在第一和第二接触区域之间形成闭合的开关。 开关穹顶可弹性地按压以将中心部分推向印刷电路板,并使接触部分围绕相应的支点枢转,以将开关穹顶的多个接触部分与第一和第二接触区域中的至少一个接触部分接触 打开开关。
    • 9. 发明申请
    • Keypad device
    • 键盘设备
    • US20040013262A1
    • 2004-01-22
    • US10200733
    • 2002-07-22
    • Raymond C. Henry
    • H04M001/00H04M003/00
    • H01H13/702E05F2015/447H01H2003/146H01H2203/03H01H2205/002H01H2225/012
    • A keypad device for a mobile telephone or other device utilizing a keypad or keyboard is comprised of a flexible substrate and a keypad cover. The flexible substrate includes a plurality of keys affixed to the surface as well as a plurality first conductive strips associated with each key. The keypad cover is attached to the flexible substrate. The keypad cover typically includes holes that permit the plurality of keys to protrude through the keypad cover. In addition, the keypad cover further includes a plurality of second conductive strips that selectively contact a corresponding first conductive strip on the flexible substrate. The plurality of first conductive strips is coupled to ground and the plurality of second conductive strips is coupled to logic circuitry. Or, in another embodiment, both sets of conductive strips are coupled with the logic circuitry. The default position of the keypad device has each of the first conductive strips in contact with each of the corresponding second conductive strips. This creates a short circuit condition that prevents key signals from being received by the logic circuitry. When a particular key is depressed to the point where the first conductive strip associated with that particular key is separated from the second conductive strip corresponding to the first conductive strip, the short circuit condition is removed. This allows a signal to be transmitted to and processed by the logic circuitry indicating that a particular key has been selected.
    • 用于移动电话或使用键盘或键盘的其他设备的键盘装置包括柔性基板和键盘盖。 柔性基板包括固定到表面的多个键以及与每个键相关联的多个第一导电条。 键盘盖连接到柔性基板上。 键盘盖通常包括允许多个键突出通过键盘盖的孔。 此外,键盘盖还包括多个第二导电条,其选择性地接触柔性基板上相应的第一导电条。 多个第一导电条耦合到地,并且多个第二导电条耦合到逻辑电路。 或者,在另一个实施例中,两组导电条与逻辑电路耦合。 键盘装置的默认位置使每个第一导电条与每个相应的第二导电条接触。 这产生了防止键信号被逻辑电路接收的短路状态。 当特定键被压下到与该特定键相关联的第一导电带与对应于第一导电带的第二导电带分离的点时,消除短路状态。 这允许将信号发送到逻辑电路并由逻辑电路进行处理,指示已经选择了特定的键。