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1. 发明授权

US5872419A Piezoelectric transformer with voltage feedback 失效
标题翻译：带电压反馈的压电变压器
公开(公告)号：US5872419A
公开(公告)日：1999-02-16
申请号：US923652
申请日：1997-09-04
申请人： Dale G. Hall , James R. Phillips , Gary L. Vaughn , Donald Forst , Harold W. Mech
发明人： Dale G. Hall , James R. Phillips , Gary L. Vaughn , Donald Forst , Harold W. Mech
IPC分类号： H01L41/107 , H01L41/08
CPC分类号： H01L41/107
摘要： A piezoelectric transformer with voltage feedback is disclosed. The transformer comprises a piezoelectric plate of predetermined length, width and height with a driving section formed by alternately stacking a plurality of piezoelectric ceramic layers having internal interdigitated electrode layers. A driven section including an unpolarized dielectric section, a voltage feedback section in the form of a multilayer electrode structure or an outer strip, and a normally polarized dielectric section is also disclosed. The transformer generates an output voltage at an output terminal by the piezoelectric vibration transmitted from the driving section. A feedback control circuit is connected to the voltage feedback section. The isolated voltage feedback provides feedback control to keep the transformer operating at the proper resonant frequency even as there is a change in output load of the transformer.
摘要翻译：公开了一种具有电压反馈的压电变压器。变压器包括具有预定长度，宽度和高度的压电板，驱动部分通过交替地堆叠具有内部交叉电极层的多个压电陶瓷层而形成。还公开了一种包括非偏振电介质部分的驱动部分，多层电极结构或外部条带形式的电压反馈部分和常平极化电介质部分。变压器通过从驱动部传递的压电振动在输出端产生输出电压。反馈控制电路连接到电压反馈部分。隔离电压反馈提供反馈控制，以保持变压器工作在正确的谐振频率，即使变压器的输出负载有变化。

2. 外观设计

USD405465S Material sensor 失效
公开(公告)号：USD405465S
公开(公告)日：1999-02-09
申请号：US49060
申请日：1996-01-16
申请人： Dale G. Hall , Hank Burke , Jerry Bohannan
设计人： Dale G. Hall , Hank Burke , Jerry Bohannan

3. 发明授权

US06252336B1 Combined piezoelectric silent alarm/battery charger 失效
标题翻译：组合压电无声报警/电池充电器
公开(公告)号：US06252336B1
公开(公告)日：2001-06-26
申请号：US09435878
申请日：1999-11-08
申请人： Dale G. Hall
发明人： Dale G. Hall
IPC分类号： H01L41113
CPC分类号： H02N2/186 , G08B3/1041 , H01L41/1134 , H01L41/1136 , H02J7/00 , H04M1/725 , H04M19/047
摘要： A communication device such as a pager or cellular telephone which requires battery power, uses a piezoelectric device as both a vibrating silent alarm and a battery charger.
摘要翻译：诸如寻呼机或蜂窝电话的需要电池电力的通信设备使用压电装置作为振动无声警报器和电池充电器。

4. 发明授权

US4524948A Electrically controlled pressure transducer valve 失效
标题翻译：电控压力传感器阀
公开(公告)号：US4524948A
公开(公告)日：1985-06-25
申请号：US530510
申请日：1983-09-09
申请人： Dale G. Hall
发明人： Dale G. Hall
IPC分类号： B60H1/00 , F02M25/07 , F16K31/06 , G05D16/20 , F16K31/02 , F16K17/04
CPC分类号： F16K31/0624 , B60H1/00485 , F02M26/57 , F16K31/0606 , G05D16/2013 , Y10S137/907 , Y10T137/87861
摘要： An electrically controlled pressure transducer valve comprises a controlled output pressure passage, an input passage communicating with a source of pressure and with the output passage, a vent passage communicable with the output passage, and a valve for controllably varying the degree of communication through the vent passage to govern the output pressure level. The valve comprises a valve member defining opposed sides forming first and second effective pressure areas respectively exposed to output and vent pressures, the valve member being movable in response to changes in differential pressure applied to the effective pressure areas. An electromagnetic actuator exerts magnetic force on the valve member and includes a coil connected to an electrical power source for producing an electromagnetic field, a core extending within the coil and a pole piece. The actuator is constructed and arranged to establish a concentrated magnetic flux path extending between the pole piece and the valve member through one valve member side.
摘要翻译：电控压力传感器阀包括受控的输出压力通道，与压力源连通的输入通道和输出通道，可与输出通道连通的通气通道，以及用于可控地改变通过通气口的连通度的阀通过管理输出压力水平。阀包括限定相对的侧面的阀构件，所述相对侧面形成分别暴露于输出和排气压力的第一和第二有效压力区域，所述阀构件可响应于施加到有效压力区域的差压的变化而移动。电磁致动器对阀构件施加磁力，并且包括连接到用于产生电磁场的电源的线圈，在线圈内延伸的铁芯和极片。致动器构造和布置成通过一个阀构件侧建立在极靴和阀构件之间延伸的集中磁通路径。

5. 发明授权

US5438230A Piezoelectric material detector 失效
标题翻译：压电材料检测仪
公开(公告)号：US5438230A
公开(公告)日：1995-08-01
申请号：US350248
申请日：1994-12-06
申请人： Dale G. Hall
发明人： Dale G. Hall
IPC分类号： G01F23/296 , G01N29/22 , G01N29/34 , G01N29/36 , G03G15/08 , H01L41/08
CPC分类号： G01N29/36 , G01F23/2965 , G01F23/2967 , G01F23/2968 , G01N29/22 , G01N29/34 , G03G15/0856 , G03G15/086 , G01N2291/02836
摘要： An improved piezoelectric material detector. The material detector (10) has a transducer structure (12) adapted to provide a certain vibration activity. A reset circuit (30) is included to minimize the possibility of false readings. And, a driving circuit (52) and detecting circuit (68) are utilized to drive and sense the presence of a material.
摘要翻译：一种改进的压电材料检测器。材料检测器（10）具有适于提供一定振动活动的换能器结构（12）。包括复位电路（30）以最小化错误读数的可能性。并且，利用驱动电路（52）和检测电路（68）来驱动和感测材料的存在。

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