公开(公告)号：US3801703A

公开(公告)日：1974-04-02

申请号：US3801703D

申请日：1971-09-17

申请人： DU PONT

发明人： BITHER T

IPC分类号： H01G7/02 ,  C01B21/20 ,  C01B35/00

CPC分类号： C01B35/06 ,  C01B35/10 ,  H01G7/025

摘要： BORACITES OF THE FORMULA M3B7O13NO3 ARE DESCRIBED WHEREIN M IS AT LEAST ONE OF CO, NI, CU, ZN OR CD. THE COMPOUNDS CAN BE PREPAED BY HEATING BORON TRIOXIDE, METAL BORATES OR OTHER SOURCES OF BORON WITH MNO3 AT 65 KILOBARS AND A TEMPERATURE TO 600 TO 1000*C. THE COMPOUNDS ARE CRYSTALLINE HAVING ORTHORHOMBIC SYMMETRY, SPACE GROUP PCA2 1. THE COMPOSITIONS ARE USEFUL AS THE WORKING ELEMENTS IN PIEZOELECTRIC DEVICES AND ARE ALSO FERROELECTRIC.

公开(公告)号：US3799648A

公开(公告)日：1974-03-26

申请号：US31850272

申请日：1972-12-26

申请人： DU PONT

发明人： FLIPPEN R

IPC分类号： C30B33/00 ,  C30B29/32 ,  G02F1/00 ,  G02F1/03 ,  G02F1/05 ,  H01B3/00 ,  H01G7/02 ,  G02F1/26

CPC分类号： H01G7/025 ,  G02F1/0027 ,  G02F1/05

摘要： Described are devices employing a ferroelastic crystal having two spontaneous strain states separated by a zigzag domain wall which can be switched to increase one strain state at the expense of the other by motion of the zigzag wall as a whole. Zigzag walls can be created by applying high stress to ferroelastic crystals under conditions which inhibit formation of normal planar walls. Once formed the zigzag walls are stable in the absence of applied stress and can be moved through the crystal by conventional means. The use of such a device in an optical shutter is also described.

摘要翻译： 描述了使用具有由之字形畴壁分离的两个自发应变状态的铁弹性晶体的器件，其可以通过作为整体的之字形壁的运动以另一方为代价来增加一个应变状态。 可以通过在阻止形成正常平面壁的条件下对铁弹性晶体施加高应力来形成曲折壁。 一旦形成，之字形壁在没有施加应力的情况下是稳定的并且可以通过常规方式移动通过晶体。 还描述了在光学快门中使用这种装置。

公开(公告)号：US3770711A

公开(公告)日：1973-11-06

申请号：US3770711D

申请日：1972-01-31

申请人： DU PONT

发明人： HARTIG M ,  HANSEN J

IPC分类号： B29C49/00 ,  B29C55/00 ,  B29C55/02 ,  B29C61/06 ,  C08F14/00 ,  C08F14/26 ,  C08F16/00 ,  C08F16/14 ,  D01F6/12 ,  H01G7/02 ,  C08F15/02 ,  C08F47/22

CPC分类号： D01F6/32 ,  Y10T428/1331 ,  Y10T428/139 ,  Y10T428/1397 ,  Y10T428/2971

摘要： ORIENTED STRUCTURES OF TETRAFLUOROETHYLENE/PERFLUORO (ALKYL VINYL ETHER) COPOLYMERS, IN WHICH THE ALKYL GROUP CONTAINS FROM 1 TO 5 CARBON ATOMS AND THE COPOLYMER CONTAINS FROM 1.0 TO 7% BY WT. OF THE ETHER MONOMER. EXHIBIT UNEXPECTEDLY HIGH LONG-TERM LOAD-BEARING ABILITY AS WELL AS OTHER IMPROVED PROPERTIES OVER SIMILARLY ORIENTED STRUCTURES OF COMMERCIALLY AVAILABLE TETRAFLUOROETHYLENE/HEXAFLUOROPROPYLENE COPOLYMER.

公开(公告)号：US3766073A

公开(公告)日：1973-10-16

申请号：US3766073D

申请日：1971-08-06

申请人： SUMITOMO ELECTRIC INDUSTRIES

发明人： OSADA M ,  KUMON O ,  NISHIMOTO T

IPC分类号： C04B35/46 ,  C04B35/48 ,  C04B35/50 ,  C04B35/51 ,  H01G7/02 ,  H01L41/187

CPC分类号： H01L41/187 ,  C04B35/46 ,  C04B35/48 ,  C04B35/50 ,  C04B35/51 ,  H01G7/026

摘要： A FERROELECTRIC AND PIEZOELECTRIC COMPOSITION CONSISTING ESSENTIALLY OF A SOLID SOLUTION OF THE TERNARY SYSTEM CONSISTING OF PB(IN1/2NB1/2)O3-PBZR(1-U)SNUO3-PBTIO3 WHEREIN O

公开(公告)号：US3761746A

公开(公告)日：1973-09-25

申请号：US3761746D

申请日：1971-11-08

申请人： ZENITH RADIO CORP

发明人： ADLER R

IPC分类号： H01G7/02 ,  H01V7/00

CPC分类号： H01G7/026 ,  H01L41/257 ,  Y10T29/42

摘要： Ferro-electric bodies are poled by employing an ionized gas or other medium as a poling electrode.

摘要翻译： 铁电体通过使用电离气体或其它介质作为极化极来极化。

公开(公告)号：US3736436A

公开(公告)日：1973-05-29

申请号：US3736436D

申请日：1971-11-04

申请人： MC DONNELL DOUGLAS CORP

发明人： CRITES R

IPC分类号： H04R19/01 ,  H01G7/02 ,  H04R19/00

CPC分类号： H04R19/01

摘要： An electret pressure transducer consisting of a very thin insulating coating applied to the surface of a body to be investigated when under stress, a thin layer of conductive paint or metallic deposit configured to extend over the area to be investigated, a layer of a solid elastic material, the electretfilm containing a permanent electric charge, and a metallic deposit on the electret film. The layer of conductive paint and the metallic deposit constitute the two plates of a parallelplate capacitor, and the elastic material in conjunction with the electric charge provided by the electret determines the sensitivity, linearity, and frequency response of the transducer.

摘要翻译： 一种驻极体压力传感器，其由在应力下应用于待研究的物体的表面施加的非常薄的绝缘涂层构成，导电涂料薄层或金属沉积物构造成在待研究的区域上延伸，一层固体弹性体 材料，含有永久电荷的驻极体膜以及驻极体膜上的金属沉积物。 导电涂料和金属沉积物层构成平行板电容器的两个板，弹性材料与驻极体提供的电荷结合确定了传感器的灵敏度，线性和频率响应。

公开(公告)号：US3731535A

公开(公告)日：1973-05-08

申请号：US3731535D

申请日：1970-08-07

申请人： WENDT R

发明人： WENDT R

IPC分类号： G01K3/14 ,  H01C7/04 ,  G01K7/24 ,  H01C7/08 ,  H01G7/02

CPC分类号： H01C7/04 ,  G01K3/14

摘要： There is disclosed apparatus for measuring precisely, to 0.01 C*, difference in temperature including thermistors, which are subject to the temperatures whose difference is being measured. The logarithm of electrical resistance of each thermistor is proportional to its temperature and the thermistors are connected in a ratiometric circuit for measuring their relative resistances. Each thermistor is a ceramic of ferroelectric material (for example, barium-strontium titanate) formed by mixing powders of different compositions, each composition having a different ferroelectric resistance anomaly, and then firing and oxidizing bodies pressed from the mixture of powders. The mixture of powders is heterogeneous so that the grains of the ceramic include a plurality of particles of powder which microscopically would manifest distinct ferroelectric resistance anomalies if fired alone but the macroscopic response of the ceramic is loglinear over a substantial temperature range.

摘要翻译： 公开了用于精确地测量包括热敏电阻在内的温度差为0.01℃的装置，其受到正在测量其差异的温度的影响。 每个热敏电阻的电阻对数与其温度成比例，并且热敏电阻连接在比例电路中以测量它们的相对电阻。 每个热敏电阻是通过混合不同组成的粉末形成的铁电材料（例如，钛酸钡锶）​​的陶瓷，每种组成具有不同的铁电电阻异常，然后从粉末混合物中压制烧成和氧化体。 粉末的混合物是不均匀的，使得陶瓷颗粒包括多个粉末颗粒，如果单独燃烧，显微镜将显示不同的铁电电阻异常，但陶瓷的宏观响应在相当温度范围内是对数线性的。

公开(公告)号：US3728694A

公开(公告)日：1973-04-17

申请号：US3728694D

申请日：1970-09-28

申请人： TECHNOVATION

发明人： ROHRER G

IPC分类号： H01G7/02 ,  G11C11/22

CPC分类号： H01G7/02 ,  H01G7/025

摘要： A ferroelectric device having a layer of stable ferroelectric potassium nitrate disposed between electrical contacts positioned on opposite surfaces of the ferroelectric layer. The ferroelectric layer has a thickness of less than 110 microns, and preferably falling within a range of from 100 angstrom units to 1000 angstrom units. The process of manufacturing the ferroelectric device includes the cooling of a layer of potassium nitrate by exposing the layer to a cold dry gas without quenching to form a stable ferroelectric layer.

摘要翻译： 具有设置在位于铁电层的相对表面上的电触点之间的具有稳定的铁电硝酸钾层的铁电体元件。 铁电层的厚度小于110微米，优选在100埃至1000埃的范围内。 制造铁电体器件的过程包括通过将层暴露于冷干燥气体而不淬火以形成稳定的铁电层来冷却硝酸钾层。

公开(公告)号：US3723754A

公开(公告)日：1973-03-27

申请号：US3723754D

申请日：1971-08-27

申请人： KUREHA CHEMICAL IND CO LTD

发明人： MURAYAMA N ,  FUKUDA M

IPC分类号： A61L27/00 ,  A61F2/06 ,  A61L33/00 ,  H01G7/02 ,  G11C19/00

CPC分类号： A61L33/0094

摘要： A non-thrombogenic article comprising: an electret having a stable heterocharge, prepared by decaying away the unstable heterocharge and homocharge of an electret, which is produced from a polymer in a conventional manner, said article being such that the negative-charge bearing surface of said electret forms the surface of the article to be brought into contact with the blood.

摘要翻译： 一种非血栓形成制品，其包含：具有稳定的异质荷电的驻极体，其通过以常规方式由聚合物制备的腐蚀掉驻极体的不稳定异质电荷和均匀电荷而制备，所述制品使得负电荷承载表面 所述驻极体形成待与血液接触的物品的表面。

公开(公告)号：US3652932A

公开(公告)日：1972-03-28

申请号：US3652932D

申请日：1970-07-30

申请人： BELL TELEPHONE LABOR INC

发明人： SESSLER GERHARD MARTIN ,  WEST JAMES EDWARD

IPC分类号： G01N27/60 ,  G01R5/28 ,  H01G7/02 ,  G01N31/02

CPC分类号： H01G7/02 ,  G01N27/60 ,  G01R5/28 ,  Y10T29/49002

摘要： Electret surface charge is measured accurately and in a reproducible fashion by supporting an electret between fixed electrodes positioned at a finite distance from the electret, one at ground potential and the other employed as a voltage probe. A conductive shutter is interposed between the electret and the probe. A capacitor connecting the electrodes is discharged and the shutter opened to induce a charge on the probe. This charge is drawn from the capacitor and the voltage thus generated across the capacitor is measured with an electrometer. Since electrode spacing is fixed, repeated measurement yields the same measure and the charges on different samples are directly comparable.

摘要翻译： 通过在位于距离驻极体有限距离的固定电极之间支撑驻极体，一个在地电位，另一个用作电压探针，可以精确地和以可再现的方式测量驻极体表面电荷。 导电快门介于驻极体和探头之间。 连接电极的电容器被放电，并且快门打开以引起探针上的电荷。 该电荷从电容器抽出，并且用静电计测量电容器两端产生的电压。 由于电极间距是固定的，反复测量产生相同的测量，并且不同样品上的电荷是直接可比的。