中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

39 records (took 0.023 seconds)

    Thin-film shape memory alloy device and method
    1.
    发明授权
    Thin-film shape memory alloy device and method 有权
    薄膜形状记忆合金装置及方法

    公开(公告)号：US08506767B2

    公开(公告)日：2013-08-13

    申请号：US13171243

    申请日：2011-06-28

    Applicant: A. David Johnson ,  Valery V. Martynov ,  Vikas Gupta ,  Arani Bose

    Inventor： A. David Johnson ,  Valery V. Martynov ,  Vikas Gupta ,  Arani Bose

    IPC: C23C14/35

    CPC classification number: A61F2/82 ,  A61F2/91 ,  A61F2/915 ,  A61F2002/91533 ,  A61F2002/9155 ,  C22F1/006 ,  C23C14/0005 ,  C23C14/14

    Abstract: A thin film device, such as an intravascular stent, is disclosed. The device is formed of a seamless expanse of thin-film (i) formed of a sputtered nitinol shape memory alloy, defining, in an austenitic state, an open, interior volume, having a thickness between 0 5-50 microns, having an austenite finish temperature Af below 37° C.; and demonstrating a stress/strain recovery greater than 3% at 37° C. The expanse can be deformed into a substantially compacted configuration in a martensitic state, and assumes, in its austenitic state, a shape defining such open, interior volume. Also disclosed is a sputtering method for forming the device.

    Abstract translation: 公开了一种薄膜装置，例如血管内支架。 该装置由无定形的薄膜（i）形成，该薄膜（i）由溅射的镍钛诺形状记忆合金形成，其以奥氏体状态限定具有0-50微米厚度的开放内部体积，具有奥氏体 完成温度低于37°C。 并且在37℃下表现出大于3％的应力/应变恢复。该膨胀物可以以马氏体状态变形为基本上压实的构造，并且以其奥氏体状态呈现限定这种敞开的内部体积的形状。 还公开了一种用于形成该器件的溅射方法。

    Single crystal shape memory alloy devices and methods
    2.
    发明授权
    Single crystal shape memory alloy devices and methods 有权
    单晶形状记忆合金装置及方法

    公开(公告)号：US07544257B2

    公开(公告)日：2009-06-09

    申请号：US10588413

    申请日：2005-05-04

    Applicant: A. David Johnson ,  Michael Bokaie ,  Valery Martynov

    Inventor： A. David Johnson ,  Michael Bokaie ,  Valery Martynov

    IPC: C22F1/08

    CPC classification number: C22C9/01 ,  A61L31/022 ,  A61L31/088 ,  A61L31/10 ,  A61L31/14 ,  A61L2400/16 ,  A61M25/00 ,  A61M2025/09141 ,  C22F1/006 ,  C30B15/00 ,  C30B29/52 ,  F16F1/021 ,  F24S30/20 ,  F24S2030/11 ,  F28D15/0241 ,  H01H37/323 ,  Y02E10/47

    Abstract: Devices and methods of making devices having one or more components made of single crystal shape memory alloy capable of large recoverable distortions, defined herein as “hyperelastic” SMA. Recoverable Strains are as large as 9 percent, and in special circumstances as large as 22 percent. Hyperelastic SMAs exhibit no creep or gradual change during repeated cycling because there are no crystal boundaries. Hyperelastic properties are inherent in the single crystal as formed: no cold work or special heat treatment is necessary. Alloy components are Cu—Al—X where X may be Ni, Fe, Co, Mn. Single crystals are pulled from melt as in the Stepanov method and quenched by rapid cooling to prevent selective precipitation of individual elemental components. Conventional methods of finishing are used: milling, turning, electro-discharge machining, abrasion. Fields of application include aerospace, military, automotive, medical devices, microelectronics, and consumer products.

    Abstract translation: 制造具有由具有大的可恢复失真的单晶形状记忆合金制成的一个或多个部件的装置的装置和方法，在本文定义为“超弹性”SMA。 可回收的菌株高达9％，在特殊情况下高达22％。 超弹性SMA在重复循环过程中没有表现出蠕变或逐渐变化，因为没有晶界。 超弹性性质在形成的单晶中是固有的：不需要冷作或特殊的热处理。 合金成分是Cu-Al-X，其中X可以是Ni，Fe，Co，Mn。 单晶从熔融中拉伸，如Stepanov方法，并通过快速冷却淬火，以防止各种元素组分的选择性沉淀。 使用常规的精加工方法：铣削，车削，放电加工，磨损。 应用领域包括航空航天，军事，汽车，医疗器械，微电子和消费品。

    Liquid microvalve
    3.
    发明授权
    Liquid microvalve 失效
    液体微型阀

    公开(公告)号：US06729599B2

    公开(公告)日：2004-05-04

    申请号：US10179701

    申请日：2002-06-24

    Applicant: A. David Johnson

    Inventor： A. David Johnson

    IPC: F16K3100

    CPC classification number: F16K99/0001 ,  F15C5/00 ,  F16K99/0015 ,  F16K99/0044 ,  F16K2099/008

    Abstract: A valve for the control of fluid flow in microsize systems, such as for transfer of small samples of blood for processing. An actuator beam comprised of a microribbon formed of a shape memory alloy is in a normally closed position where inlet and outlet ports of the valve are closed. In this position a compliant member presses against and holds the microribbon, together with a compliant tape carried below the microribbon, against the ports. The valve is actuated by heating the alloy through its crystalline phase change transition temperature. The resulting change of the microribbon to its memory shape moves the microribbon and tape away from the ports, enabling fluid flow through between the ports in a valve-open mode. The microribbon and tape are held in the valve-open mode when the alloy cools below the transition temperature by a force applied from a heat-shrinkable layer carried on the upper side of the microribbon.

    Abstract translation: 用于控制微尺寸系统中流体流动的阀，例如用于转移小样本的血液进行处理。 由形状记忆合金形成的微肋组成的致动器梁处于常闭状态，阀的入口和出口关闭。 在该位置，柔顺构件与微型扶手下方承载的柔性带一起按压和保持微型扶手，并抵靠端口。 阀门通过加热合金通过其结晶相变转变温度来启动。 由此导致的微型薄板到其记忆形状的变化使微型薄板和磁带从端口移开，使得流体能够以阀打开模式在端口之间流动。 当合金通过由微支架上侧承载的热收缩层施加的力冷却至转变温度以下时，微型钢筋和胶带保持在阀开启模式。

    Shutter for fiber optic systems
    4.
    发明授权
    Shutter for fiber optic systems 失效

    公开(公告)号：US06614570B2

    公开(公告)日：2003-09-02

    申请号：US09968740

    申请日：2001-09-29

    Applicant: A. David Johnson ,  David Hice

    Inventor： A. David Johnson ,  David Hice

    IPC: G02B2602

    CPC classification number: G02B6/353 ,  G02B6/3552 ,  G02B6/3568 ,  G02B6/358

    Abstract: A light shutter for controlling a light signal between occluded and uninterrupted states. The shutter has a frame which mounts a beam under compression so that it assumes either of two bi-stable buckled positions. An occluder is mounted on the beam, A shape memory alloy actuator is provided which applies a force transverse on the beam as the actuator is heated to its shape change transition temperature. The transverse force bends the beam, causing it to buckle to the opposite bi-stable position. This moves the occluder into or out of the path of the light signal.

    Release device for retaining pin
    5.
    发明授权
    Release device for retaining pin 失效
    释放装置用于固定销

    公开(公告)号：US5771742A

    公开(公告)日：1998-06-30

    申请号：US526715

    申请日：1995-09-11

    Applicant: Michael D. Bokaie ,  John D. Busch ,  A. David Johnson ,  Bruce Petty

    Inventor： Michael D. Bokaie ,  John D. Busch ,  A. David Johnson ,  Bruce Petty

    IPC: B64G1/22 ,  B25G3/18

    CPC classification number: E05B17/2011 ,  B64G1/22 ,  E05B47/0009 ,  Y10T403/21 ,  Y10T403/23 ,  Y10T74/11

    Abstract: A release mechanism employing an actuating element of a shape memory alloy material. When the actuating element is heated through its phase-change transition temperature it applies a force which moves a latch to a position which activates the higher energy stored in a drive spring for moving a retaining element out of engagement with a structure. A detent when in a captured position releasably holds the retaining element in its locked position, and the detent is moved from a captured position to a retracted position to release the retaining element when the latch is moved by the actuating element.

    Abstract translation: 采用形状记忆合金材料的致动元件的释放机构。 当致动元件通过其相变转变温度被加热时，它施加一个力，该力将闩锁移动到一个激活存储在驱动弹簧中的较高能量的位置，用于使保持元件与结构脱离啮合。 当捕获位置处的棘爪可释放地将保持元件保持在其锁定位置时，并且当闩锁被致动元件移动时，棘爪从捕获位置移动到缩回位置以释放保持元件。

    Shape memory alloy microactuator having an electrostatic force and heating means
    6.
    发明授权
    Shape memory alloy microactuator having an electrostatic force and heating means 失效
    具有静电力和加热装置的形状记忆合金微致动器

    公开(公告)号：US5619177A

    公开(公告)日：1997-04-08

    申请号：US381681

    申请日：1995-01-27

    Applicant: A. David Johnson ,  Barry Block ,  Philip Mauger

    Inventor： A. David Johnson ,  Barry Block ,  Philip Mauger

    IPC: H01H1/00 ,  H01H59/00 ,  H01H61/01 ,  H01H61/06

    CPC classification number: H01H59/0009 ,  H01H61/0107 ,  G11C23/00 ,  H01H1/0036 ,  H01H2001/0042 ,  H01H2001/0063 ,  H01H2059/0081 ,  H01H2061/006

    Abstract: A microactuator and method of operation is disclosed for use in actuating valves, electrical contacts, light beams, sensors and other elements between different actuation modes. An actuator member comprised of a shape memory alloy layer is mounted on an elastic substrate, and the proximal end of the actuator member is carried by a base. The shape memory alloy material is heated through its phase change transition temperature so that it deforms by changing volume to bend the distal end of the actuator member in a first direction relative to the base. Stress forces in the substrate oppose the bending movement, and when the shape change layer is cooled below the transition temperature the stress forces move the distal in a second direction which returns the shape change layer to its low temperature shape. Electrostatic forces are selectively applied between the actuator member and base for clamping the actuator member in one of its positions. In another embodiment a bistable actuator is provided in which the actuator member can be operated between two stable positions.

    Abstract translation: 公开了一种微致动器和操作方法，用于在不同致动模式之间致动阀，电触点，光束，传感器和其他元件。 由形状记忆合金层构成的致动器构件安装在弹性基板上，致动器构件的基端由基座承载。 形状记忆合金材料通过其相变转变温度加热，使得其通过改变体积而变形，以使致动器构件的远端相对于基部沿第一方向弯曲。 衬底中的应力作用与弯曲运动相反，当形状变化层被冷却到转变温度以下时，应力将第二个方向移动到远端，使第二个方向返回到其低温形状。 静电力被选择性地施加在致动器构件和底座之间，以将致动器构件夹紧在其位置之一中。 在另一个实施例中，提供双稳态致动器，其中致动器构件可以在两个稳定位置之间操作。

    Shape memory alloy film actuated microvalve
    7.
    发明授权
    Shape memory alloy film actuated microvalve 失效
    形状记忆合金膜致动微型阀

    公开(公告)号：US5325880A

    公开(公告)日：1994-07-05

    申请号：US49572

    申请日：1993-04-19

    Applicant: A. David Johnson ,  Curtis A. Ray

    Inventor： A. David Johnson ,  Curtis A. Ray

    IPC: F15C3/04 ,  F16K31/00 ,  G01N30/20 ,  H01H1/00 ,  H01H61/01

    CPC classification number: F16K99/0001 ,  F15C3/04 ,  F16K31/002 ,  F16K99/0009 ,  F16K99/0015 ,  F16K99/0038 ,  F16K99/0044 ,  H01H1/0036 ,  C08L2201/12 ,  G01N30/20 ,  H01H2061/006 ,  H01H2061/0122 ,  H01H61/0107 ,  Y10T137/0318

    Abstract: A sub-miniature valve which provides an actuator of shape memory alloy film coupled so as to move a poppet adjacent to a valve port. The shape memory alloy film actuator is thermally cycled through its phase change transition temperature, resulting in either a contraction or elongation of the actuator. This causes the poppet to move relative to the port and either increase or decrease fluid flow. The shape memory alloy film is biased toward its deformed position when cooled below its transition temperature. The valve can be electrically operated with commonly available voltages, including those used for micro-electronics. The relatively large forces and displacements achieved using the shape memory alloy film provide less restriction and greater flow than in other similarly sized valves.

    Abstract translation: 提供形状记忆合金薄膜致动器的亚微型阀，该致动器联接成使阀座邻近阀口移动。 形状记忆合金膜致动器通过其相变转变温度热循环，导致致动器的收缩或伸长。 这使得提升阀相对于端口移动并增加或减少流体流量。 当冷却到其转变温度以下时，形状记忆合金膜被偏压到其变形位置。 阀门可以通常使用的电压进行电动操作，包括用于微电子的电压。 使用形状记忆合金膜实现的相对大的力和位移比其他类似尺寸的阀提供较少的限制和更大的流动。

    Method of erecting flat folded cases
    9.
    发明授权
    Method of erecting flat folded cases 失效
    竖立平折箱的方法

    公开(公告)号：US4163414A

    公开(公告)日：1979-08-07

    申请号：US771166

    申请日：1977-02-23

    Applicant: Joseph L. Bachman, Jr. ,  George E. Ginther, Sr. ,  A. David Johnson, Jr.

    Inventor： Joseph L. Bachman, Jr. ,  George E. Ginther, Sr. ,  A. David Johnson, Jr.

    IPC: B31B5/80 ,  B31B1/76

    CPC classification number: B31B1/00 ,  B31B2201/027 ,  B31B2201/287 ,  B31B2201/29 ,  B31B2203/003

    Abstract: Flat folded four-panel case is set up in a vertical takedown plane. The case is pulled out of the plane and manipulated to cause the four panels to move relative to each other so that the case assumes a diamond shape. The case is then partially erected. Next, one of the panels is held fixed (with the others being free to move) and a bottom flap is folded inwardly. This transmits forces to the panels so that the diamond shape changes to a square shape and the case is fully erected.

    Abstract translation: 平面折叠的四面板盒子设置在垂直移动的平面上。 将壳体从平面中拉出并进行操作以使四个面板相对于彼此移动，使得壳体呈现为菱形。 然后将该情况部分竖立。 接下来，一个面板被固定（其中一个可自由移动），并且底部折板向内折叠。 这将力传递到面板上，使得菱形变为正方形，并且壳体被完全竖起。

Patent Agency Ranking