公开(公告)号：US20090183986A1

公开(公告)日：2009-07-23

申请号：US12357104

申请日：2009-01-21

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

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

IPC: C23C14/34

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。

公开(公告)号：US06470108B1

公开(公告)日：2002-10-22

申请号：US09558893

申请日：2000-04-26

Applicant: A. David Johnson

Inventor： A. David Johnson

IPC: G02B2608

CPC classification number: G02B6/3576 ,  G02B6/3514 ,  G02B6/3546 ,  G02B6/3548 ,  G02B6/358 ,  G02B6/3584

Abstract: A method of measuring with high accuracy the composition of shape memory alloy elements that are sputter deposited in thin film form. An element of known composition is polished with a flat surface. An element of unknown composition is sputter deposited onto the surface. Miniature openings are made by photography in the unknown layer, exposing an area of the known substrate. With adjacent areas of the two samples then only microns apart, accurate measurements of the compositions are made by comparing the X-ray spectra resulting from an electron beam scanning across the two areas.

Abstract translation: 以高精度测量以薄膜形式溅射沉积的形状记忆合金元素的组成的方法。 已知组合物的元素用平坦表面抛光。 未知组成的元素被溅射沉积在表面上。 通过在未知层中的摄影制作微型开口，暴露已知基底的区域。 对于两个样品的相邻区域，只有微小的差距，通过比较从两个区域的电子束扫描得到的X射线光谱，可以对组合物进行准确的测量。

公开(公告)号：US07441888B1

公开(公告)日：2008-10-28

申请号：US11415885

申请日：2006-05-02

Applicant: A. David Johnson

Inventor： A. David Johnson

IPC: G02C1/00

CPC classification number: G02C5/00 ,  B29D12/02

Abstract: Eyeglass frame hinges are replaced by flexures made of hyperelastic single-crystal shape memory alloy. These flexures exhibit more than 8 percent recoverable strain. Eyeglass frames with these flexures can be distorted repeatedly in ways that would destroy ordinary hinges, and recover without damage. Flexures may be incorporated in eyeglass frames in ways that make them attractive as fashion items, thus enhancing the value of a commodity consumer product.

Abstract translation: 眼镜框架铰链被由超弹性单晶形状记忆合金制成的弯曲部分所取代。 这些弯曲表现出超过8％的可恢复应变。 具有这些弯曲的眼镜架可以以破坏普通铰链的方式重复扭曲，并且不损坏地恢复。 弯曲可以以使其作为时尚物品具有吸引力的方式并入眼镜框架中，从而提高商品消费品的价值。

公开(公告)号：US07422403B1

公开(公告)日：2008-09-09

申请号：US10972745

申请日：2004-10-25

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

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

IPC: F16B35/00

CPC classification number: F16B35/00 ,  B23P11/025 ,  B64G1/641 ,  F16B1/0014 ,  F16B5/02 ,  Y10S411/02

Abstract: A device and method for holding or clamping components together, and with the clamping being selectively loosened to permit the components to move through a predetermined distance without being fully released. A bolt has its head end attached to one component and its threaded end attached to the other component. A portion of the bolt's shank is formed with a necked-down portion. An actuator of shape memory alloy material is mounted about the bolt. When energized by heat, the actuator expands and exerts a great force which stretches the bolt, permanently deforming the bolt. This enables limited movement of the components while still restraining them from separating.

Abstract translation: 一种用于将部件保持或夹持在一起并且夹紧被选择性松开以允许部件移动预定距离而不被完全释放的装置和方法。 螺栓的头部端部附接到一个部件，其螺纹端部连接到另一个部件。 螺栓杆的一部分形成有颈缩部分。 形状记忆合金材料的致动器围绕螺栓安装。 当通过加热激励时，致动器膨胀并施加很大的力，其拉伸螺栓，使螺栓永久变形。 这使得组件的有限运动同时仍然限制它们的分离。

公开(公告)号：US06742761B2

公开(公告)日：2004-06-01

申请号：US10121017

申请日：2002-04-10

Applicant: A. David Johnson ,  Glendon Benson

Inventor： A. David Johnson ,  Glendon Benson

IPC: F16K3100

CPC classification number: F16K31/003 ,  B64G1/22 ,  F16K31/002 ,  F16K31/566

Abstract: An SMA actuated miniature latching valve for on and off control of fluid flow. A valve closure includes a poppet for opening and closing the fluid flow path. The poppet is operated responsive to an actuator mechanism which has SMA wires arranged to be actuated by electric resistant heating. Actuation causes different ones of the wires to contract and pull the poppet either toward or away from a valve seat. A latching mechanism comprising a conical spring operates between two bistable positions which hold the poppet either fully open or fully closed without further application of power to the actuators. A method of forming a secure mechanical and electrical connection between an SMA wire end and its support includes the steps of swaging a metal cone between a cone-shaped hole in the support and the wire end.

Abstract translation: SMA致动微型闭锁阀，用于开启和关闭流体流量控制。 阀闭合件包括用于打开和关闭流体流路的提升阀。 提升头响应于致动器机构操作，该致动器机构具有布置成通过电阻加热致动的SMA线。 致动导致不同的电线收缩并将提升阀朝向或远离阀座拉动。 包括锥形弹簧的闩锁机构在两个双稳态位置之间操作，这两个双稳态位置将提升阀完全打开或完全关闭，而不需要进一步向致动器施加动力。 在SMA线端和其支撑件之间形成牢固的机械和电连接的方法包括以下步骤：将金属锥体在支撑件中的锥形孔与线端之间进行模锻。

公开(公告)号：US06669795B2

公开(公告)日：2003-12-30

申请号：US10051737

申请日：2002-01-17

Applicant: A. David Johnson ,  Valery Martynov

Inventor： A. David Johnson ,  Valery Martynov

IPC: C23C1414

CPC classification number: C22F1/006 ,  C22C30/00 ,  C23C14/165 ,  C23C14/3464 ,  C23C14/548

Abstract: A method of fabricating ternary TiNi-based alloys to achieve substantially higher phase-change transition temperatures in the resulting SMA materials and which have optimal thermo-mechanical properties. One target is provided which comprises the element Ti, a second target comprises the element Ni and a third target comprises an element which when combined with Ti and Ni can produce a shape memory alloy. The three targets are co-sputtered onto a substrate at rates which are controlled so that the sum of the percentage composition of the elements that are from the left side of the periodic table are substantially 50 atomic percent, and the sum of percentage composition of the elements that are from the right side of the periodic table comprise the remaining 50 atomic percent.

公开(公告)号：US5960812A

公开(公告)日：1999-10-05

申请号：US900885

申请日：1997-07-25

Applicant: A. David Johnson

Inventor： A. David Johnson

IPC: F16K17/14 ,  F16K17/40 ,  F16K31/70

CPC classification number: F16K17/14 ,  Y10T137/1624 ,  Y10T137/1654

Abstract: A valve and method of operation for controlling the flow of fluid from a pressurized fluid source while maintaining a secure seal against fluid leakage over long periods of time. The valve includes a valve body formed with an inlet channel which extends through a strain concentrating portion. The strain concentrating portion has an ultimate strength less than that of support portions of the body. An actuator applies a load to the valve body sufficient to create a stress which exceeds the ultimate strength of the strain concentrating portion. The strain concentrating portion then fractures into parts separated by a gap. The fracture forms openings from the inlet channel into the gap to create a flow path from the fluid source into an outlet channel.

Abstract translation: 一种用于控制来自加压流体源的流体流动的阀和操作方法，同时保持长时间的流体泄漏的安全密封。 阀包括形成有延伸穿过应变集中部分的入口通道的阀体。 应变集中部分的极限强度小于主体的支撑部分的极限强度。 致动器对阀体施加足够的负载以产生超过应变集中部分的极限强度的应力。 然后应变集中部分断裂成间隙分开。 裂缝形成从入口通道进入间隙的开口以产生从流体源到出口通道的流动路径。

公开(公告)号：US07632361B2

公开(公告)日：2009-12-15

申请号：US11041185

申请日：2005-01-24

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

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

IPC: C22C9/01

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.

公开(公告)号：US06790298B2

公开(公告)日：2004-09-14

申请号：US09902856

申请日：2001-07-10

Applicant: A. David Johnson ,  Vikas Galhotra ,  Vikas Gupta

Inventor： A. David Johnson ,  Vikas Galhotra ,  Vikas Gupta

IPC: C22C4500

CPC classification number: A61L31/088 ,  A61L31/14 ,  A61L2400/16 ,  C23C14/0005 ,  C23C14/165 ,  C23F1/04

Abstract: Methods of fabricating a free standing thin film of shape memory alloy material, and products made by the methods. A sacrificial layer of a metallic material is deposited onto the surface of a substrate. Then an amorphous shape memory alloy is sputter deposited onto the outer surface of the sacrificial layer. The sacrificial layer is etched away, leaving the thin film free standing, that is separated from the substrate. The thin film is annealed by heating into a crystalline state, with the annealing step carried out either after the film has been separated from the substrate, or while remaining attached to it.

Abstract translation: 制造形状记忆合金材料的自立薄膜的方法，以及由该方法制成的产品。 将金属材料的牺牲层沉积在基底的表面上。 然后将非晶态记忆合金溅射沉积到牺牲层的外表面上。 牺牲层被蚀刻掉，使薄膜自由站立，从衬底分离。 该薄膜通过加热退火至结晶状态，退火步骤是在薄膜从基材分离出之后进行的，或者在保持附着于其上时进行。

公开(公告)号：US06746890B2

公开(公告)日：2004-06-08

申请号：US10198654

申请日：2002-07-17

Applicant: Vikas Gupta ,  A. David Johnson ,  Letecia Menchaca ,  Valery Martynov

Inventor： Vikas Gupta ,  A. David Johnson ,  Letecia Menchaca ,  Valery Martynov

IPC: H01L2100

CPC classification number: A61F2/013 ,  A61B17/12 ,  A61B17/12022 ,  A61B17/12113 ,  A61B17/12131 ,  A61B17/12172 ,  A61B17/221 ,  A61B2017/00526 ,  A61B2017/00867 ,  A61B2017/1205 ,  A61B2017/2212 ,  A61F2/91 ,  A61F2002/018 ,  A61F2230/0006 ,  A61F2230/0063 ,  A61F2230/0067 ,  A61F2230/0069 ,  A61F2230/008

Abstract: Methods for making thin film multiple layered three-dimensional devices using two-dimensional MEMS techniques for use in a variety of applications including endovascular, endolumenal, intracranial, and intraocular medical applications. In the general method, a thin film first layer of the device material is deposited over a release layer which in turn is deposited on a substrate. An other release layer is deposited on the first device layer, with portions of the other release layer removed, leaving a pattern in the first device layer. In a similar manner a second layer of device material is formed in a pattern overlying the first device layer with portions of the two layers joined together leaving a portion of the release layer between them. The two release layers are removed and the first and second layers of the device material are formed into a three-dimensional shape suitable for the desired end-use application.