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1. 发明申请

US20070216265A1 Piezoelectric actuator 有权
标题翻译：压电执行器
公开(公告)号：US20070216265A1
公开(公告)日：2007-09-20
申请号：US11724457
申请日：2007-03-15
申请人： Michael P. Cooke , Christopher A. Goat , Simon R. Panteny , Gordon M. Reid
发明人： Michael P. Cooke , Christopher A. Goat , Simon R. Panteny , Gordon M. Reid
IPC分类号： H01L41/083
CPC分类号： H01L41/0472 , H01L41/0833 , H01L41/293
摘要： A piezoelectric actuator comprising a stack of piezoelectric layers formed from a piezoelectric material, a plurality of internal electrodes disposed throughout the stack to define active regions of the piezoelectric material therebetween which are responsive to a voltage applied across two or more groups of the internal electrodes in use, an insulating arrangement which at least partially covers at least one surface of the stack to define a piezoelectric/insulator interface, and two or more side electrodes to connect with the two or more groups of the internal electrodes. At least one bridging arrangement extends through the insulating arrangement and comprises a conductive material, so as to provide a connection between a side electrode and an internal electrode, wherein at least one first surface, defined by an interface between the conductive material and the insulating arrangement, and at least one second surface, defined by an internal boundary of a piezoelectric layer, are substantially continuous with one another in the vicinity of the piezoelectric/insulator interface.
摘要翻译：一种压电致动器，包括由压电材料形成的压电层的叠层，设置在整个堆叠中的多个内部电极，以限定其间的压电材料的有源区，其响应于施加在两组或更多组内部电极上的电压使用绝缘装置，其至少部分地覆盖堆叠的至少一个表面以限定压电/绝缘体接口，以及两个或更多个侧电极与两组或多组内部电极连接。至少一个桥接装置延伸穿过绝缘装置并且包括导电材料，以便在侧面电极和内部电极之间提供连接，其中至少一个第一表面由导电材料和绝缘布置之间的界面限定，并且由压电层的内部边界限定的至少一个第二表面在压电/绝缘体界面附近彼此基本连续。

2. 发明授权

US07839054B2 Piezoelectric actuator 有权
标题翻译：压电执行器
公开(公告)号：US07839054B2
公开(公告)日：2010-11-23
申请号：US11724457
申请日：2007-03-15
申请人： Michael P. Cooke , Christopher A. Goat , Simon R. Panteny , Gordon M. Reid
发明人： Michael P. Cooke , Christopher A. Goat , Simon R. Panteny , Gordon M. Reid
IPC分类号： H01L41/08
CPC分类号： H01L41/0472 , H01L41/0833 , H01L41/293
摘要： A piezoelectric actuator comprising a stack of piezoelectric layers formed from a piezoelectric material, a plurality of internal electrodes disposed throughout the stack to define active regions of the piezoelectric material therebetween which are responsive to a voltage applied across two or more groups of the internal electrodes in use, an insulating arrangement which at least partially covers at least one surface of the stack to define a piezoelectric/insulator interface, and two or more side electrodes to connect with the two or more groups of the internal electrodes. At least one bridging arrangement extends through the insulating arrangement and comprises a conductive material, so as to provide a connection between a side electrode and an internal electrode, wherein at least one first surface, defined by an interface between the conductive material and the insulating arrangement, and at least one second surface, defined by an internal boundary of a piezoelectric layer, are substantially continuous with one another in the vicinity of the piezoelectric/insulator interface.
摘要翻译：一种压电致动器，包括由压电材料形成的压电层的叠层，设置在整个堆叠中的多个内部电极，以限定其间的压电材料的有源区，其响应于施加在两组或更多组内部电极上的电压使用绝缘装置，其至少部分地覆盖堆叠的至少一个表面以限定压电/绝缘体接口，以及两个或更多个侧电极与两组或多组内部电极连接。至少一个桥接装置延伸穿过绝缘装置并且包括导电材料，以便在侧面电极和内部电极之间提供连接，其中至少一个第一表面由导电材料和绝缘布置之间的界面限定，并且由压电层的内部边界限定的至少一个第二表面在压电/绝缘体界面附近彼此基本连续。

3. 发明申请

US20100025065A1 CASING FOR AN ELECTRICAL COMPONENT 有权
标题翻译：为电气组件而设计
公开(公告)号：US20100025065A1
公开(公告)日：2010-02-04
申请号：US12524171
申请日：2008-01-31
申请人： Christopher A. Goat , Michael P. Cooke
发明人： Christopher A. Goat , Michael P. Cooke
IPC分类号： H05K5/02
CPC分类号： H01L41/053 , H01L41/0533
摘要： A casing for encapsulation of an electrical component, for example a piezoelectric actuator, comprising an outer layer of a semipermeable material and an inner layer comprising a chemically active, hydrophilic substance that chemically combines with water to form a compound.
摘要翻译：一种用于封装电气部件的壳体，例如压电致动器，其包括半透膜材料的外层和包含与水化学结合以形成化合物的化学活性的亲水物质的内层。

4. 发明授权

US08058777B2 Casing for an electrical component 有权
标题翻译：套管电气元件
公开(公告)号：US08058777B2
公开(公告)日：2011-11-15
申请号：US12524171
申请日：2008-01-31
申请人： Christopher A. Goat , Michael P. Cooke
发明人： Christopher A. Goat , Michael P. Cooke
IPC分类号： H01L41/08
CPC分类号： H01L41/053 , H01L41/0533
摘要： A casing for encapsulation of an electrical component, for example a piezoelectric actuator, comprising an outer layer of a semipermeable material and an inner layer comprising a chemically active, hydrophilic substance that chemically combines with water to form a compound.
摘要翻译：一种用于封装电气部件的壳体，例如压电致动器，其包括半透膜材料的外层和包含与水化学结合以形成化合物的化学活性的亲水物质的内层。

5. 发明授权

US07799260B2 Method of poling ferroelectric materials 有权
标题翻译：铁电材料极化方法
公开(公告)号：US07799260B2
公开(公告)日：2010-09-21
申请号：US11521183
申请日：2006-09-14
申请人： Christopher A. Goat , Michael P. Cooke
发明人： Christopher A. Goat , Michael P. Cooke
IPC分类号： H05B6/00
CPC分类号： H01L41/257 , H01L41/083 , Y10T29/42 , Y10T29/49004 , Y10T29/49005
摘要： A method of poling a ferroelectric sample suitable for use in a fuel injector of an internal combustion engine, the method comprising providing a ferroelectric sample having a stack of ferroelectric layers, wherein adjacent layers are separated by internal electrodes, forming a first group and a second group of electrodes; applying a multiaxial pressure to the ferroelectric sample; and generating an electric field between the first and second group of electrodes to pole the ferroelectric sample. The multiaxial pressure is ideally applied by means of a fluid, and the fluid may be an dielectric fluid or fuel.
摘要翻译：一种适用于内燃机的燃料喷射器的铁电样品的极化方法，该方法包括提供具有堆叠铁电层的铁电样品，其中相邻层由内部电极分离，形成第一组和第二组电极组对铁电样品施加多轴压力; 以及在所述第一和第二组电极之间产生电场以使所述铁电体样品极化。理想地，通过流体施加多轴压力，并且流体可以是介电流体或燃料。

6. 发明授权

US07745974B2 Reducing stress gradients within piezoelectric actuators 有权
标题翻译：降低压电执行器内的应力梯度
公开(公告)号：US07745974B2
公开(公告)日：2010-06-29
申请号：US12075365
申请日：2008-03-11
申请人： Christopher A. Goat , Michael Peter Cooke
发明人： Christopher A. Goat , Michael Peter Cooke
IPC分类号： H01L41/08
CPC分类号： H01L41/083 , H01L41/1876 , H01L41/257
摘要： Piezoelectric actuators of the type comprising a stack of layers of ferroelectric material and intervening electrodes which extend only part-way across the adjacent ferroelectric layers suffer differential remanent stress when electric fields are applied across the layers. To overcome this, a tensile stress is applied to the actuator along an axis substantially perpendicular to the layers of piezoelectric material in the actuator, which tensile stress is sufficient to mechanically align the dipoles, thus giving rise to a remanent strain which is uniform throughout the actuator. The actuator is advantageously heated while the tensile stress is applied, so as to increase the difference between the tensile strength of the material and the applied tensile stress. An alternative arrangement involves subjecting the actuator to a multidirectional stress and reducing the stress along the axis substantially perpendicular to the layers of piezoelectric material in the actuator. The entire process is performed on completed actuators. Under suitable temperature and load conditions no tensile margin fractures form and electrode tip discontinuity is reduced.
摘要翻译：包括铁电材料层的堆叠的压电致动器和仅在相邻的铁电层上分开延伸的中间电极，当跨越层施加电场时，产生差异的剩余应力。为了克服这一点，致动器沿着基本上垂直于致动器中的压电材料层的轴线施加拉伸应力，该拉伸应力足以机械对准偶极子，从而产生在整个过程中均匀的剩余应变执行器。有利地，在施加拉伸应力的同时加热致动器，以增加材料的拉伸强度与施加的拉伸应力之间的差异。一种替代方案包括使致动器经受多向应力并且沿着基本垂直于致动器中的压电材料层的轴线减小应力。整个过程在完成的执行器上执行。在合适的温度和负载条件下，不产生拉伸边缘断裂，电极尖端不连续性降低。

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