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公开(公告)号：US5570258A
公开(公告)日：1996-10-29
申请号：US439258
申请日：1995-05-11
申请人： William R. Manning
发明人： William R. Manning
摘要： A phase monitor and protection circuit is shown in which an impedance network (21, 23, 25) in a respective branch (20, 22, 24) connected to a neutral (26) is coupled to each phase of a three phase power supply (L1, L2, L3) to create a known voltage profile across the respective networks. A relay network (36) is coupled to one branch (20) and a control network (30) is coupled to a second branch (24) to monitor the voltage levels and deenergize the relay (R1) upon the occurrence of the reversal of any two phases or the loss of a phase. The control circuit can also be used to detect low voltage conditions and in a second embodiment provides a time delay network (44) to avoid nuisance tripping due to transient low voltage or brown out condition.
摘要翻译： 示出了相位监视和保护电路，其中连接到空档（26）的相应分支（20,22,24）中的阻抗网络（21,23,25）耦合到三相电源的每个相（ L1，L2，L3），以产生跨各个网络的已知电压分布。 中继网络（36）耦合到一个分支（20），并且控制网络（30）耦合到第二分支（24）以监视电压电平并且在发生任何 两个阶段或一个阶段的丧失。 控制电路也可用于检测低电压条件，并且在第二实施例中提供了一种时间延迟网络（44），以避免由于瞬态低电压或掉电条件而导致的妨碍跳闸。
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公开(公告)号：US4128433A
公开(公告)日：1978-12-05
申请号：US906063
申请日：1978-05-15
申请人： William R. Manning
发明人： William R. Manning
CPC分类号： C04B35/48
摘要： A method for producing a dense and impervious stabilized hafnium oxide ceramic having zero percent water absorption is disclosed. The hafnium oxide is stabilized in the sense that a solid solution with Y.sub.2 O.sub.3 is formed. The solid solution has a cubic crystal structure which, because of its similarity to the structure of the mineral fluorite, is sometimes called a "fluorite phase"; unlike hafnium oxide alone, which undergoes a destructive phase transformation from tetragonal to monoclinic during cooling, the cubic structure of the solid solution remains stable during cooling of a ceramic article. The ceramic is made by producing an intimate dry mixture consisting essentially, on an oxide basis, of hafnia, yttria and at least one oxide selected from the group consisting of silica, alumina, calcia, magnesia, baria and strontia, yttria constituting substantially 8 to 12 mole percent of said article based upon the total number of moles of hafnia and yttria, and silica, alumina, calcia, magnesia, baria and strontia constituting from 1/4 percent to 4 percent, based upon the weight of hafnia and yttria, with the proviso that calcia, magnesia, baria and strontia constitute not more than 70 percent by weight of the total of silica, alumina, calcia, magnesia, baria and strontia, pressing the dry mixture into a predetermined shape, and sintering the shape to a gas impervious condition at a temperature from 2700.degree. F. to 3000.degree. F. A stabilized, dense, hafnium oxide ceramic has the capability of conducting oxygen anions, a requisite of the solid electrolyte in an oxygen concentration cell. Such a cell can be used as an oxygen sensor in apparatus for controlling the operation of an internal combustion engine to maintain substantially the stoichiometric air-fuel ratio. When the air-fuel ratio is closely controlled, a three-way catalytic converter can be used to control emissions of hydrocarbons, CO and NO.sub.x within the limits presently specified for 1978.
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公开(公告)号：USD465198S1
公开(公告)日：2002-11-05
申请号：US29133881
申请日：2000-12-08
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公开(公告)号：US5585990A
公开(公告)日：1996-12-17
申请号：US444446
申请日：1995-05-19
CPC分类号： H02H7/09 , H02H1/06 , H02H7/0852 , H02H11/007
摘要： An electronic motor protection system is shown having a power supply usable with multivoltage supplies and providing protection from over-temperature conditions caused by various fault conditions. The system also has optional features of a time delay for re-energization and for low voltage protection. The system is mounted on a circuit board and encased in potting material which also locks the two housing parts together. A miswiring feature is also provided to prevent connecting line voltage to the control circuit or sensor terminals.
摘要翻译： 电子电动机保护系统被示出具有可用于多电压供应的电源并且提供由各种故障条件引起的过温条件的保护。 该系统还具有延时重新通电和低电压保护的可选功能。 该系统安装在电路板上并封装在灌封材料中，该灌封材料也将两个壳体部件锁定在一起。 还提供了误接线功能，以防止将线路电压连接到控制电路或传感器端子。
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公开(公告)号：US5570257A
公开(公告)日：1996-10-29
申请号：US176754
申请日：1994-01-03
CPC分类号： H02H11/004 , H02H7/097
摘要： A phase sequence protection circuit is shown in which first and second resistors (R1, R2) and a first capacitor (C1) all having equivalent impedance are connected in a Y configuration and coupled to power source leads (A, C, B) of a three phase power supply, resistor R1 being coupled to phase A, capacitor C1 to phase B and resistor R2 to phase C. A comparator network (12) is connected in line with the first resistor (R1) and, in one embodiment will cause a solid state switch (Q1) to conduct when the phases are out of sequence. In a second embodiment a buffer portion (COMP2) is provided to add switching hysteresis which also reverses the switching logic causing the solid state switch (Q1) to conduct when the phases are in sequence. In another embodiment the comparator network (12") is provided with the buffer portion (COMP2) for switching hysteresis and arranged to cause the solid state switch (Q1) to conduct when the phases are out of sequence. An opto-isolator (14) interfaces with the comparator network (12, 12', 12") to provide isolation. The signal from the opto-isolator in comparator network (12') controls the energization of a second solid state switch (Q2) and a relay coil (K1) used to energize a load.
摘要翻译： 示出了相序保护电路，其中具有等效阻抗的第一和第二电阻器（R1，R2）和第一电容器（C1）以Y构型连接并耦合到电源引线（A，C，B） 三相电源，电阻器R1耦合到相位A，电容器C1到相位B，电阻器R2耦合到相位C.比较器网络（12）与第一电阻器（R1）一致连接，并且在一个实施例中将引起 固态开关（Q1）在相位不合格时进行。 在第二实施例中，提供缓冲器部分（COMP2）以增加开关滞后，其也使得开关逻辑反转，导致固态开关（Q1）在相位依次时导通。 在另一个实施例中，比较器网络（12“）设置有用于切换滞后的缓冲部分（COMP2），并且被布置成当相位失效时导致固态开关（Q1）导通。 光隔离器（14）与比较器网络（12,12'，12“）接口以提供隔离。 来自比较器网络（12'）中的光隔离器的信号控制用于激励负载的第二固态开关（Q2）和继电器线圈（K1）的通电。
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公开(公告)号：US5183610A
公开(公告)日：1993-02-02
申请号：US647197
申请日：1990-12-20
IPC分类号： C04B35/119 , C04B35/488
CPC分类号： C04B35/119 , C04B35/4885
摘要： A method for producing a ceramic is disclosed. The method involves comminuting a batch composed of from 6 to 95 percent of particulate ZrO.sub.2 and from 5 to 94 percent of particulate Al.sub.2 O.sub.3. A part of the particulate ZrO.sub.2 is in a metastable tetragonal crystal structure, for example, as a consequence of 3.sup.m/o of Y.sub.2 O.sub.3 dissolved therein and a part has a monoclinic crystal structure. The comminuted batch is compacted into a shape, and the shape is fired. The degree of comminution of the batch, the firing conditions and the proportions of stabilized and monoclinic ZrO.sub.2 in the batch are controlled to produce a dense, gas impervious ceramic which contains both metastable tatragonal and monoclinic ZrO.sub.2, and in such proportions that the ceramic has improved strength by comparison with an otherwise identical ceramic wherein all of the ZrO.sub.2 is in either a metastable tetragonal or a monoclinic crystal structure.Also disclosed is a method where the particulate alumina can be an alumina-chromia solid solution containing up to 50.sup.m/o of chromia.In another embodiment, a ceramic article is disclosed. The article is composed of from 6 to 95 percent of particulate ZrO.sub.2, from 5 to 94 percent of particulate Al.sub.2 O.sub.3, from 1/4 to 33/4 percent of MnO.sub.2 and from 1/4 to 33/4 percent of TiO.sub.2 .
摘要翻译： 公开了一种陶瓷的制造方法。 该方法包括粉碎由6至95％的颗粒状ZrO 2和5至94％的Al 2 O 3组成的批料。 颗粒状ZrO 2的一部分为亚稳态的四方晶系结构，例如，作为3m / o的Y2O3溶解的结果，部分具有单斜晶体结构。 粉碎的批次被压制成形状，并且形状被烧制。 控制批料的粉碎程度，焙烧条件和批次中稳定和单斜ZrO2的比例，以制备含有亚稳晶粒和单斜晶ZrO2的致密的不透气陶瓷，并且按照这样的比例使陶瓷改进 与其他相同的陶瓷相比，其中所有的ZrO 2都是亚稳态的四方晶系或单斜晶体结构。 还公开了一种方法，其中颗粒氧化铝可以是含有高达50m / o的氧化铬的氧化铝 - 氧化铬固溶体。 在另一个实施方案中，公开了一种陶瓷制品。 该制品由6％至95％的颗粒状ZrO 2，5％至94％的颗粒状Al 2 O 3，1/3〜33/4％的MnO 2和1/4〜33/4％的TiO 2组成。
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公开(公告)号：US5147833A
公开(公告)日：1992-09-15
申请号：US682852
申请日：1991-04-05
IPC分类号： C04B35/10 , C04B35/119 , C04B35/48 , C04B35/488
CPC分类号： C04B35/4885 , C04B35/119
摘要： A ceramic article is disclosed. The article is composed of from 6 to 50 percent of particulate ZrO.sub.2 having an ultimate particle size less than 2 .mu.m, from 50 to 94 percent of particulate Al.sub.2 O.sub.3, from 1/4 to 3 percent of MnO.sub.2 and from 1/4 to 3 percent of TiO.sub.2.
摘要翻译： 公开了一种陶瓷制品。 该制品由6％至50％的最终粒度小于2微米，50至94％的颗粒状Al 2 O 3，1/3至3％的MnO 2和1/3至3％的颗粒状ZrO 2组成。 的TiO2。
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公开(公告)号：US4879260A
公开(公告)日：1989-11-07
申请号：US204597
申请日：1988-06-08
申请人： William R. Manning
发明人： William R. Manning
IPC分类号： C03C3/087 , C03C14/00 , C04B33/26 , C04B35/111
CPC分类号： C03C3/087 , C03C14/004 , C04B33/26 , C04B35/111 , C03C2214/04
摘要： A ceramic consisting essentially of from 1 to 15 percent of glass and 99 to 85 percent of a mixture of particulate Al.sub.2 O.sub.3 and particulate ZrO.sub.2 is disclosed. ZrO.sub.2 is present in a sufficient amount usually from 1/4 to 6 percent base on the of the ZrO.sub.2 and Al.sub.2 O.sub.3, to strengthen the ceramic significantly, by comparison with an otherwise identical ceramic where the particulate ZrO.sub.2 is replaced either by the glass or by particulate Al.sub.2 O.sub.3. The glass constitutes a vitreous phase bonding the particulates into a dense, gas impervious structure, and can be a calcium magnesium silicate glass containing from 45 to 80 percent of SiO.sub.2, from 8 to 55 percent of CaO and MgO, and not more than 15 percent of Al.sub.2 O.sub.3.
摘要翻译： 公开了一种基本上由1至15％的玻璃和99％至85％的Al 2 O 3和颗粒状ZrO 2的混合物组成的陶瓷。 ZrO 2通常以ZrO 2和Al 2 O 3为基准的1/4至6％的量存在，通过与其它相同的陶瓷（其中颗粒状ZrO 2被玻璃或颗粒状物质替代）相比较，显着增强陶瓷 Al2O3。 该玻璃构成将微粒粘结成致密的不透气结构的玻璃相，可以是含有45-80％的SiO 2，8至55％的CaO和MgO，不大于15％ 的Al2O3。
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公开(公告)号：US5548464A
公开(公告)日：1996-08-20
申请号：US350778
申请日：1994-12-07
申请人： William R. Manning
发明人： William R. Manning
CPC分类号： H02H1/06 , H02H7/0852 , H02H7/09 , H02H11/007
摘要： A electronic motor protection system is shown having a power supply (12) usable with multivoltage supplies and providing protection from over-temperature conditions caused by various fault conditions. The system also has optional features of a time delay (20) for re-energization and for low voltage protection (22). The system is mounted on a circuit board and encased in potting material which also locks two housing parts together (30, 34). A miswiring feature is also provided to prevent connecting line voltage to the control circuit or sensor terminals.
摘要翻译： 电子电动机保护系统被示出具有可用于多电压电源的电源（12），并且提供由各种故障条件引起的过温条件的保护。 该系统还具有用于再通电和低电压保护的延时（20）的可选特征（22）。 该系统安装在电路板上并封装在灌封材料中，该灌封材料也将两个壳体部件锁定在一起（30,34）。 还提供了误接线功能，以防止将线路电压连接到控制电路或传感器端子。
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公开(公告)号：USRE34028E
公开(公告)日：1992-08-11
申请号：US583663
申请日：1990-09-17
申请人： William R. Manning
发明人： William R. Manning
IPC分类号： C03C3/087 , C03C14/00 , C04B35/111 , C04B35/63
CPC分类号： C03C3/087 , C03C14/004 , C04B35/111 , C04B35/6316 , C03C2214/04
摘要： A ceramic consisting essentially of from 1 to 15 percent of glass and 99 to 85 percent of a mixture of particulate Al.sub.2 O.sub.3 and particulate ZrO.sub.2 is disclosed. ZrO.sub.2 is present in a sufficient amount, usually from 1/4 to 6 percent based on the weight of the ZrO.sub.2 and Al.sub.2 O.sub.3, to strengthen the ceramic significantly, by comparison with an otherwise identical ceramic where the particulate ZrO.sub.2 is replaced either by the glass or by particulate Al.sub.2 O.sub.3. The glass constitutes a vitreous phase bonding the particulates into a dense, gas impervious structure, and can be a calcium magnesium silicate glass containing from 45 to 80 percent of SiO.sub.2, from 8 to 55 percent of CaO and MgO, and not more than 15 percent of Al.sub.2 O.sub.3.
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