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    Powder extrusion of shaped sections
    5.
    发明申请
    Powder extrusion of shaped sections 审中-公开
    成形截面的粉末挤压

    公开(公告)号：US20100178194A1

    公开(公告)日：2010-07-15

    申请号：US12319723

    申请日：2009-01-12

    申请人： Mark W. Broadley ,  John Eckert ,  Ray Rilling ,  Roger J. White ,  Jeffrey M. Farina ,  James Alan Sago

    发明人： Mark W. Broadley ,  John Eckert ,  Ray Rilling ,  Roger J. White ,  Jeffrey M. Farina ,  James Alan Sago

    IPC分类号： B22F3/11 ,  B22F3/24 ,  C22C38/18 ,  B22F1/00

    CPC分类号： B22F5/10 ,  B22F3/20 ,  B22F2998/10 ,  B22F1/0059 ,  B22F3/1021 ,  B22F3/24

    摘要： The present invention provides a continuous powder extrusion method for making an article having a profile including an outer shape and optionally including one or more inner hollows. One or more bulk material powders and one or more binders are provided, and the bulk material powders and the binders are mixed to form a mixture. A die is provided, the die optionally including a mandrel having one or more shapes. The mixture is extruded through the die and the optional mandrel to produce a green form. The green form is debound to produce a brown form and the brown form is sintered to produce a densified form. The densified form is optionally processed using thermal, mechanical, and/or thermomechanical processing to produce a wrought form. The densified or wrought form is optionally cut to a length and/or finished using traditional metal finishing processes.

    摘要翻译： 本发明提供一种用于制造具有包括外部形状并且可选地包括一个或多个内部凹部的轮廓的制品的连续粉末挤出方法。 提供一种或多种散装材料粉末和一种或多种粘合剂，并且将散装材料粉末和粘合剂混合以形成混合物。 提供模具，模具可选地包括具有一个或多个形状的心轴。 将混合物通过模头和可选的心轴挤出以产生绿色形式。 绿色形式被剥离以产生棕色形式，并且棕色形式被烧结以产生致密化形式。 任选地使用热，机械和/或热机械加工处理致密化形式以产生锻造形式。 使用传统的金属精加工方法，可选地将致密或锻造形式切割成长度和/或成品。

    Thermionic cathode with continuous bimetallic wall having varying wall thickness and internal blackening
    6.
    发明授权
    Thermionic cathode with continuous bimetallic wall having varying wall thickness and internal blackening 失效
    具有连续双金属壁的热阴极具有变化的壁厚和内部变黑

    公开(公告)号：US5422536A

    公开(公告)日：1995-06-06

    申请号：US101157

    申请日：1993-08-03

    申请人： John R. Hale ,  Jeffrey M. Farina

    发明人： John R. Hale ,  Jeffrey M. Farina

    IPC分类号： H01J1/26 ,  H01J29/04 ,  H01J29/46

    CPC分类号： H01J1/26 ,  H01J29/04

    摘要： A cathode sheath for a thermionic electron-gun cathode. The sheath is substantially in the form of a hollow cylinder and has an outer surface and an inner surface, a central axis, a closed end and an axially-opposite open end, and a side wall extending between the closed end and the open end. The sheath is a continuous bimetallic laminate having a first layer of material forming the inner surface and a second layer of electron-emission (donor) material overlying substantially the entirety of the first layer and forming the outer surface. The laminate has a preselected thickness at the closed end and has a thickness at the side wall which varies along the central axis. The outer surface of the bimetallic laminate is substantially unreactive with oxygen whereas the inner surface is more readily reactive with oxygen. When the cathode sheath is heated and exposed to an atmosphere of wet gas, the inner surface of the sheath becomes blackened (an oxide layer forms thereon) whereas the outer surface remains unaltered and substantially free from irregularities or roughness.

    摘要翻译： 用于热电子枪阴极的阴极护套。 护套基本上是中空圆柱体的形式，并且具有外表面和内表面，中心轴线，封闭端和轴向相对的开口端，以及在封闭端和开口端之间延伸的侧壁。 鞘是具有形成内表面的第一材料层和覆盖基本上整个第一层并形成外表面的第二层电子发射（供体）材料的连续双金属层压体。 层压板在封闭端具有预选的厚度，并且在侧壁处具有沿中心轴线变化的厚度。 双金属层压体的外表面与氧基本上不反应，而内表面更容易与氧反应。 当阴极鞘被加热并暴露于湿气氛中时，护套的内表面变黑（在其上形成氧化物层），而外表面保持不变，基本上没有凹凸或粗糙。

    Multilayer composite tubular structure and method of making
    8.
    发明授权
    Multilayer composite tubular structure and method of making 失效
    多层复合管结构及其制作方法

    公开(公告)号：US5858556A

    公开(公告)日：1999-01-12

    申请号：US784622

    申请日：1997-01-21

    申请人： John K. Eckert ,  Jeffrey M. Farina ,  Joseph P. Gadda ,  Jeffrey C. Kelly ,  John G. Thomas

    发明人： John K. Eckert ,  Jeffrey M. Farina ,  Joseph P. Gadda ,  Jeffrey C. Kelly ,  John G. Thomas

    IPC分类号： A61F2/00 ,  A61F2/82 ,  B32B15/01 ,  C21D8/10 ,  A61F2/06 ,  C21D9/08

    CPC分类号： A61F2/82 ,  B32B15/01 ,  C21D8/105 ,  A61F2/0077 ,  A61F2/91 ,  A61F2240/001 ,  A61F2250/0098 ,  A61F2310/00017 ,  C21D2251/02 ,  Y10T428/12292 ,  Y10T428/12819 ,  Y10T428/12875 ,  Y10T428/12889 ,  Y10T428/12979

    摘要： A multilayer composite tubular structure for use as a stent in surgical procedures has an outer layer of biocompatible material, a middle layer of radiopaque material, and an inner layer of biocompatible material. The layers are metallurgically bonded, to form a composite stent which is ductile and permits large deformation without delamination between the biocompatible and radiopaque layers. The composite structure formed is visible on a fluoroscope, yet does not obstruct the details of the stent itself, or of the anatomical features surrounding the stent.A process of forming a multilayer composite tubular structure is also disclosed. A tube formed from radiopaque material is coaxially surrounded by a tube of biocompatible material. The tubes are simultaneously reduced, such as by tube drawing, swaging, or deep drawing, until a composite structure of a desirable diameter and wall thickness is formed. The tubes are then heat treated to cause diffusion bonding of the biocompatible and radiopaque layers.

    摘要翻译： 在外科手术中用作支架的多层复合管状结构具有生物相容性材料的外层，不透射线材料的中间层和生物相容性材料的内层。 这些层是冶金结合的，以形成延展性并允许大的变形而不会在生物相容性和不透射线层之间分层的复合支架。 所形成的复合结构在荧光镜上是可见的，但不会妨碍支架本身的细节或者支架周围的解剖特征。 还公开了一种形成多层复合管状结构的方法。 由不透射线材料形成的管被生物相容性材料管同轴地包围。 管同时还原，例如通过管拉伸，模锻或深拉伸，直到形成具有所需直径和壁厚的复合结构。 然后对管进行热处理以引起生物相容性和不透射线层的扩散结合。

    Thermionic cathode with continuous bimetallic wall
    9.
    发明授权
    Thermionic cathode with continuous bimetallic wall 失效
    具有连续双金属壁的热阴极

    公开(公告)号：US5729084A

    公开(公告)日：1998-03-17

    申请号：US2286

    申请日：1993-01-08

    申请人： John Richard Hale ,  Jeffrey M. Farina ,  Philip J. Koehler ,  Nicholas Maropis

    发明人： John Richard Hale ,  Jeffrey M. Farina ,  Philip J. Koehler ,  Nicholas Maropis

    IPC分类号： H01J1/26 ,  H01J29/04 ,  H01J29/46

    CPC分类号： H01J29/04 ,  H01J1/26

    摘要： A cathode sheath for a thermionic electron-gun cathode. The sheath is substantially in the form of a hollow cylinder and has an outer surface and an inner surface, a central axis, a closed end and an axially-opposite open end, and a side wall extending between the closed end and the open end. The sheath is a continuous bimetallic laminate having a first layer of material forming the inner surface and a second layer of electron-emissive material overlying substantially the entirety of the first layer and forming the outer surface. The laminate has a preselected thickness at the closed end and has a thickness at the side wall which varies along the central axis.

    摘要翻译： 用于热电子枪阴极的阴极护套。 护套基本上是中空圆柱体的形式，并且具有外表面和内表面，中心轴线，封闭端和轴向相对的开口端，以及在封闭端和开口端之间延伸的侧壁。 护套是具有形成内表面的第一材料层和覆盖基本上整个第一层并形成外表面的第二电子发射材料层的连续双金属层压体。 层压板在封闭端具有预选的厚度，并且在侧壁处具有沿中心轴线变化的厚度。