公开(公告)号：US6063101A

公开(公告)日：2000-05-16

申请号：US196797

申请日：1998-11-20

申请人： Stephen C. Jacobsen ,  John Lippert ,  David L. Wells ,  Clark C. Davis ,  Kent Backman

发明人： Stephen C. Jacobsen ,  John Lippert ,  David L. Wells ,  Clark C. Davis ,  Kent Backman

IPC分类号： A61F2/00 ,  A61F2/86 ,  A61F2/88 ,  A61M29/00

CPC分类号： A61F2/885 ,  A61F2/86 ,  A61F2/958 ,  A61F2220/005 ,  A61F2220/0058 ,  A61F2250/0068 ,  A61F2250/0071

摘要： A stent for disposition in a body passageway or duct to maintain the duct walls apart, for example, to allow the flow of fluid therethrough, includes an elongate flexible support wire formed into an annular lattice having a central void, for disposition at a target location in the duct. Also included is an elongate flexible connecting wire joined at a distal end to the annular lattice and having a discontinuity for severing when supplied with a perturbation signal, a balloon catheter having an expandable section disposable in the void of the annular lattice so that when the expandable section is expanded, it forces the annular lattice radially outwardly to contact and hold apart the duct walls, and a fluid supply for supplying fluid to the expandable section of the balloon catheter to cause it to expand. A perturbation signal source is provided for supplying the perturbation signal to the discontinuity of the connecting wire to cause severance thereof.

摘要翻译： 用于设置在身体通道或管道中的支架，以将导管壁保持分开，例如允许流体流过其中，包括形成为具有中心空隙的环形格子的细长柔性支撑线，用于在目标位置 在管道中。 还包括一个细长的柔性连接线，其在远端处连接到环形格子，并且当被提供有扰动信号时具有用于切断的不连续性，气球导管具有在环形格子的空隙中一次性的可扩张部分，使得当可扩张 部分膨胀，它迫使环形格子径向向外接触和夹住管道壁，以及用于向球囊导管的可扩张部分供应流体以使其膨胀的流体供应源。 提供扰动信号源，用于将扰动信号提供给连接线的不连续处以引起其断开。

公开(公告)号：US5744947A

公开(公告)日：1998-04-28

申请号：US744380

申请日：1996-11-07

申请人： Stephen L. Jacobsen ,  David L. Wells

发明人： Stephen L. Jacobsen ,  David L. Wells

IPC分类号： B25J7/00 ,  B23K15/00 ,  B23K17/00 ,  B23K26/08 ,  B81B3/00 ,  F03G7/00 ,  G01B7/24 ,  G01B21/00 ,  G01D5/12 ,  G01K5/48 ,  G01P13/02 ,  G01P13/04 ,  G01P15/08 ,  G01P15/09 ,  G01P15/13 ,  G01P15/18 ,  G02B6/12 ,  G02B6/43 ,  G03F7/20 ,  G05B19/18 ,  G09F9/33 ,  G12B1/00 ,  H01L21/00 ,  H01L21/48 ,  H01L21/68 ,  H01L25/065 ,  H01L25/10 ,  H01L25/16 ,  H01L29/06 ,  H01L41/09 ,  H01L41/113 ,  H02N2/04 ,  H02N10/00 ,  G01R5/22 ,  H02M7/00

CPC分类号： G03F7/70691 ,  B23K15/002 ,  B23K17/00 ,  B23K26/08 ,  G01B7/24 ,  G01D5/12 ,  G01K5/483 ,  G01P13/04 ,  G01P15/08 ,  G01P15/0922 ,  G01P15/133 ,  G01P15/18 ,  G02B6/12002 ,  G02B6/43 ,  G05B19/186 ,  G09F9/33 ,  G12B1/00 ,  H01L21/4846 ,  H01L21/67011 ,  H01L21/68 ,  H01L25/065 ,  H01L25/162 ,  H01L41/0966 ,  H01L29/0657 ,  H01L2924/0002 ,  H02N2/18

摘要： A movement actuator includes an elongate filament made of a flexible material, and a strip of shape memory alloy disposed on the surface of one side of the filament. The shape memory alloy is responsive to actuation signals, heat or electrical signals, for changing its shape and when its shape changes, it causes the filament to move, i.e., bend, to accommodate the change in shape of the alloy. Also included is a signal supply device for selectively applying heat signals or electrical current to the strip of shape memory alloy to cause the alloy to change its shape and cause the filament to bend. Other patterns for the shape memory alloy could be disposed on the filament to cause other kinds of movements. For example, a helical pattern of the shape memory alloy about the filament would cause the filament to twist when the helical pattern were caused to shorten or lengthen.

公开(公告)号：US4878556A

公开(公告)日：1989-11-07

申请号：US96163

申请日：1987-09-11

申请人： David L. Wells

发明人： David L. Wells

IPC分类号： B62D7/15

CPC分类号： B62D7/1509

摘要： A steering system for a tow tractor having steerable front and rear road wheels is disclosed. The steering system comprises a steering wheel for turning the front road wheels and a hydrauclic servo valve for turning the rear road wheels through an angle proportional to the turning of the front road wheels.A rear mechanical push-pull cable is used for signaling a feedback angular quantity of the turning of the rear road wheels to the servo valve. A front mechanical push-pull cable is used for signaling an input angular quantity of the turning of the front road wheels to the servo valve. A hydraulic clutch is used for remotely engaging and disengaging the front mechanical system having at least two steering modes for the front and rear road wheels.A method of operating a vehicle having mechanical controls for steerable front and rear road wheels is disclosed that eliminates the dangers of a failure mode inherent in an electronic control over hydraulic four-wheel steering device.

公开(公告)号：US4659292A

公开(公告)日：1987-04-21

申请号：US100859

申请日：1979-12-06

申请人： David L. Wells ,  Allen M. Johnson

发明人： David L. Wells ,  Allen M. Johnson

IPC分类号： F04B9/103 ,  F04B17/00

CPC分类号： F04B9/103

摘要： A hydraulic actuated pressure booster unit includes a differential power piston and an integral control valve controlling the pumping direction and action. The control valve has a reciprocally mounted tubular spool member in a cylinder valve body. The spool member has a control passageway and a plurality of spaced spools, one of which mates with the power piston passage to form a first valve for transfer of oil to the pumping chamber and from a transfer chamber to an exhaust passageway. A pair of spaced spools slide in stepped control chamber forming a control bore and exhaust bore connected by the spool passageway to the pumping chamber via the first valve. A sequence valve connects the exhaust bore to the exhaust through a directional control valve. The sequence valve is controlled by the output working pressure. A pilot valve controls the load connection to the one end of the cylinder and a high pressure relief valve limits the total pressure created within the working system. The valves and operating sections are axially mounted in longitudinal spacing within a tubular housing having fluid passages formed by recesses in the sidewalls and sealed by an outer shell.

摘要翻译： 液压致动升压单元包括差动动力活塞和控制泵送方向和作用的整体控制阀。 控制阀具有在气缸阀体中的往复安装的管状阀芯构件。 卷轴构件具有控制通道和多个间隔开的卷轴，其中一个与动力活塞通道配合，以形成用于将油传递到泵送室和从传送室传递到排气通道的第一阀。 一对隔开的卷轴在阶梯式控制室中滑动，形成控制孔和通过阀芯通道连接到排气室的排气孔，经由第一阀。 顺序阀通过方向控制阀将排气孔连接到排气口。 顺序阀由输出工作压力控制。 先导阀控制与气缸一端的负载连接，高压溢流阀限制工作系统内产生的总压力。 阀和操作部分以纵向间隔轴向安装在管状壳体内，其具有由侧壁中的凹部形成并由外壳密封的流体通道。

公开(公告)号：US4375579A

公开(公告)日：1983-03-01

申请号：US117140

申请日：1980-01-30

申请人： George I. Davida ,  David L. Wells ,  John B. Kam

发明人： George I. Davida ,  David L. Wells ,  John B. Kam

IPC分类号： G06F1/00 ,  G06F21/00 ,  H04L9/00

CPC分类号： G06F21/72 ,  G06F21/6209

摘要： An encryption and decryption circuit and method using subkeys which is therefore particularly useful for the encryption and decryption of database information. Each data field has a corresponding write key and a different read key. A database record is encrypted by multiplying each field by its corresponding write key and adding up all such products modulo the product of all read keys. The read keys must be prime numbers and the write keys must satisfy a certain relationship with respect to the read keys. A database record may have a single field decrypted by dividing the encrypted record by the read key for that field and taking the remainder. The security of each field may thereby be individually controlled without compromising the security of the entire record.

摘要翻译： 一种使用子密钥的加密和解密电路和方法，因此特别适用于数据库信息的加密和解密。 每个数据字段具有相应的写入密钥和不同的读取密钥。 通过将每个字段乘以其相应的写入密钥来加密数据库记录，并将所有这样的产品模数化为所有读取密钥的乘积。 读取键必须是素数，并且写入键必须满足与读取键相关的特定关系。 数据库记录可以具有通过将加密记录除以该字段的读取密钥并取余数来解密的单个字段。 因此，可以单独地控制每个区域的安全性，而不会影响整个记录的安全性。

公开(公告)号：US06576406B1

公开(公告)日：2003-06-10

申请号：US09606815

申请日：2000-06-29

申请人： Stephen C. Jacobsen ,  David L. Wells

发明人： Stephen C. Jacobsen ,  David L. Wells

IPC分类号： G03F700

CPC分类号： G03F7/703 ,  G03F7/24 ,  G03F7/7035 ,  G03F7/70366

摘要： A micro-lithographic apparatus and method for selectively exposing/masking resist material on a non-planer workpiece or filamentary substrate includes a hollow, energy transparent tubular member with a hollow for containing the workpiece. The tubular member is selectively coated with a layer of energy-opaque material to form the desired pattern. The transparent tube and opaque coating selectively expose/mask the resist material on the workpiece. Alternatively, the apparatus and method include an energy opaque tubular member with apertures formed through the walls of the tubular member. The apertures form the desired pattern. The opaque tube with apertures selectively exposes/masks the resist material. The apparatus and method may also include an energy source and a rotating device for rotating the tubular member, with the workpiece disposed therein, to the energy source or rotating energy source around tubular member or have energy source surround tubular member.

摘要翻译： 用于在非平面工件或丝网衬底上选择性地曝光/掩蔽抗蚀剂材料的微光刻设备和方法包括具有用于容纳工件的中空的中空的能量透明的管状构件。 管状构件选择性地涂覆有能量不透明材料层以形成所需图案。 透明管和不透明涂层选择性地暴露/掩蔽工件上的抗蚀剂材料。 或者，该装置和方法包括能量不透明的管状构件，其具有通过管状构件的壁形成的孔。 孔形成所需的图案。 具有孔的不透明管选择性地暴露/掩蔽抗蚀剂材料。 该装置和方法还可以包括能量源和旋转装置，用于使管状构件旋转，其中工件设置在其中，能量源或围绕管状构件的旋转能量源，或者具有围绕管状构件的能量源。

公开(公告)号：US5747993A

公开(公告)日：1998-05-05

申请号：US745002

申请日：1996-11-07

申请人： Stephen C. Jacobsen ,  David L. Wells

发明人： Stephen C. Jacobsen ,  David L. Wells

IPC分类号： B25J7/00 ,  B23K15/00 ,  B23K17/00 ,  B23K26/08 ,  B81B3/00 ,  F03G7/00 ,  G01B7/24 ,  G01B21/00 ,  G01D5/12 ,  G01K5/48 ,  G01P13/02 ,  G01P13/04 ,  G01P15/08 ,  G01P15/09 ,  G01P15/13 ,  G01P15/18 ,  G02B6/12 ,  G02B6/43 ,  G03F7/20 ,  G05B19/18 ,  G09F9/33 ,  G12B1/00 ,  H01L21/00 ,  H01L21/48 ,  H01L21/68 ,  H01L25/065 ,  H01L25/10 ,  H01L25/16 ,  H01L29/06 ,  H01L41/09 ,  H01L41/113 ,  H02N2/04 ,  H02N10/00 ,  G01R29/22

CPC分类号： G03F7/70691 ,  B23K15/002 ,  B23K17/00 ,  B23K26/08 ,  G01B7/24 ,  G01D5/12 ,  G01K5/483 ,  G01P13/04 ,  G01P15/08 ,  G01P15/0922 ,  G01P15/133 ,  G01P15/18 ,  G02B6/12002 ,  G02B6/43 ,  G05B19/186 ,  G09F9/33 ,  G12B1/00 ,  H01L21/4846 ,  H01L21/67011 ,  H01L21/68 ,  H01L25/065 ,  H01L25/162 ,  H01L41/0966 ,  H01L29/0657 ,  H01L2924/0002 ,  H02N2/18

摘要： A movement actuator includes an elongate filament made of a flexible material, and a strip of shape memory alloy disposed on the surface of one side of the filament. The shape memory alloy is responsive to actuation signals, heat or electrical signals, for changing its shape and when its shape changes, it causes the filament to move, i.e., bend, to accommodate the change in shape of the alloy. Also included is a signal supply device for selectively applying heat signals or electrical current to the strip of shape memory alloy to causes the alloy to change its shape and cause the filament to bend. Other patterns for the shape memory alloy could be disposed on the filament to cause other kinds of movements. For example, a helical pattern of the shape memory alloy about the filament would cause the filament to twist when the helical pattern were caused to shorten or lengthen.

摘要翻译： 运动致动器包括由柔性材料制成的细长丝，以及设置在灯丝一侧表面上的形状记忆合金条。 形状记忆合金响应于致动信号，热或电信号，用于改变其形状，并且当其形状改变时，它使灯丝移动，即弯曲，以适应合金形状的变化。 还包括用于选择性地将热信号或电流施加到形状记忆合金条上以使合金改变其形状并引起细丝弯曲的信号提供装置。 形状记忆合金的其他图案可以设置在灯丝上以引起其它种类的运动。 例如，围绕细丝的形状记忆合金的螺旋图案将导致当螺旋图案被缩短或延长时细丝扭曲。

公开(公告)号：US5297279A

公开(公告)日：1994-03-22

申请号：US531493

申请日：1990-05-30

申请人： Thomas J. Bannon ,  Stephen J. Ford ,  Vappala J. Joseph ,  Edward R. Perez ,  Robert W. Peterson ,  Diana M. Sparacin ,  Satish M. Thatte ,  Craig W. Thompson ,  Chung C. Wang ,  David L. Wells

发明人： Thomas J. Bannon ,  Stephen J. Ford ,  Vappala J. Joseph ,  Edward R. Perez ,  Robert W. Peterson ,  Diana M. Sparacin ,  Satish M. Thatte ,  Craig W. Thompson ,  Chung C. Wang ,  David L. Wells

IPC分类号： G06F12/00 ,  G06F9/44 ,  G06F17/30 ,  G06F3/00 ,  G06F15/40

CPC分类号： G06F17/30607 ,  Y10S707/954 ,  Y10S707/955 ,  Y10S707/99944

摘要： A system and method for database management for providing support for long-term storage and retrieval of objects created by application programs written at least in part in object-oriented programming languages consists of a plurality of software modules. These modules provide data definition language translation, object management, object translation, and persistent object storage service. Such system implements an object fault capability to reduce the number of interactions between the application, the database management system, and the database.

摘要翻译： 一种用于数据库管理的系统和方法，用于提供对由至少部分编写在面向对象编程语言中的应用程序创建的对象的长期存储和检索的支持，包括多个软件模块。 这些模块提供数据定义语言翻译，对象管理，对象转换和持久对象存储服务。 这样的系统实现了对象故障能力，以减少应用程序，数据库管理系统和数据库之间的交互次数。

公开(公告)号：US5005030A

公开(公告)日：1991-04-02

申请号：US529322

申请日：1990-05-29

申请人： David L. Wells

发明人： David L. Wells

IPC分类号： F16M13/04 ,  G03B17/56

CPC分类号： F16M13/00 ,  F16M11/10 ,  F16M13/04 ,  G03B17/563 ,  F16M2200/041 ,  G03B2217/005

摘要： A camera steadying device (10) is disclosed which includes a motorized flywheel (14) for creating an inertial moment which tends to oppose sudden movements and vibrations, thereby substantially reducing or eliminating "camera shake." Flywheel (14) is housed within flywheel chamber (30) in main housing (11). A camera mounting platform (12) is attached to housing (11) via an adjustable articulated joint (13). Adjustable articulated joint (13) enables the angle of housing (11), with respect to camera mounting platform (12), to be adjusted such that no portion of camera steadying device (10) appears within the field of vision of an attached camera.

摘要翻译： 公开了一种照相机稳定装置（10），其包括用于产生倾向于抵抗突然移动和振动的惯性力矩的电动飞轮（14），从而大大减少或消除“相机晃动”。 飞轮（14）容纳在主壳体（11）中的飞轮室（30）内。 相机安装平台（12）经由可调节的铰接接头（13）附接到壳体（11）。 可调式铰接接头（13）使壳体（11）相对于照相机安装平台（12）的角度可调节，使得相机稳定装置（10）的任何部分都不会出现在附接摄像机的视野内。

公开(公告)号：US4343595A

公开(公告)日：1982-08-10

申请号：US100860

申请日：1979-12-06

申请人： David L. Wells ,  Allen M. Johnson

发明人： David L. Wells ,  Allen M. Johnson

IPC分类号： F04B9/103 ,  F04B17/00

CPC分类号： F04B9/103

摘要： A hydraulic actuated pressure booster unit includes a differential power piston and an integral control valve controlling the pumping direction and action. The control valve has a reciprocally mounted tubular spool member in a cylindrical valve body. The spool member has a control passageway and a plurality of spaced spools, one of which mates with the power piston passage to form a first valve for transfer of oil to the pumping chamber and from a transfer chamber to an exhaust passageway. A pair of spaced spools slide in stepped control chamber forming a control bore and exhaust bore connected by the spool passageway to the pumping chamber via the first valve. A sequence valve connects the exhaust bore to the exhaust through a directional control valve. The sequence valve is controlled by the output working pressure. A pilot valve controls the load connection to the one end of the cylinder and a high pressure relief valve limits the total pressure created within the working system. The valves and operating sections are axially mounted in longitudinal spacing within a tubular housing having fluid passages formed by recesses in the sidewalls and sealed by an outer shell.

摘要翻译： 液压致动升压单元包括差动动力活塞和控制泵送方向和作用的整体控制阀。 控制阀具有在圆柱形阀体中的往复安装的管状阀芯构件。 卷轴构件具有控制通道和多个间隔开的卷轴，其中一个与动力活塞通道配合，以形成用于将油传递到泵送室和从传送室传递到排气通道的第一阀。 一对隔开的卷轴在阶梯式控制室中滑动，形成控制孔和通过阀芯通道连接到排气室的排气孔，经由第一阀。 顺序阀通过方向控制阀将排气孔连接到排气口。 顺序阀由输出工作压力控制。 先导阀控制与气缸一端的负载连接，高压溢流阀限制工作系统内产生的总压力。 阀和操作部分以纵向间隔轴向安装在管状壳体内，其具有由侧壁中的凹部形成并由外壳密封的流体通道。