公开(公告)号：US06677415B1

公开(公告)日：2004-01-13

申请号：US09926291

申请日：2002-01-15

申请人： John Joseph O'Connor ,  Christopher Paul Buckley ,  Junjie Wu

发明人： John Joseph O'Connor ,  Christopher Paul Buckley ,  Junjie Wu

IPC分类号： C08F1418

CPC分类号： B29C43/003 ,  A61F2/32 ,  A61F2/38 ,  A61F2/3804 ,  A61F2/40 ,  A61F2/4202 ,  A61F2/4225 ,  A61F2/4241 ,  A61F2/4261 ,  A61F2002/30957 ,  B29C43/006 ,  B29C2043/5816 ,  B29K2023/0683 ,  B29L2031/7532

摘要： A process of compression moulding an article from a polymer powder comprising; a) applying a polymer powder to a mould; b) compacting the polymer powder by the application of a pressure P; c) raising the temperature of the surface of the mould to a value above the melting temperature of the polymer powder; and d) maintaining a temperature TM at the surface of the mould for a period of time tM and then cooling to a temperature below the crystallisation temperature of the polymer; where TM and tM are controlled so as to provide a moulded article comprising a polymer of predetermined maximum reptated molecular weight. The compression moulded articles produced by this process are useful as orthopaedic prostheses, such as components of knee, hip, shoulder, elbow, wrist, ankle, finger or toe joint replacements.

摘要翻译： 一种从聚合物粉末压制成型制品的方法，包括： a）将聚合物粉末施加到模具上; b）通过施加压力P压实聚合物粉末; c）将模具表面的温度提高到高于聚合物粉末的熔融温度的值; 和d）将模具表面上的温度TM保持在一段时间tM，然后冷却到低于聚合物结晶温度的温度; 其中TM和tM被控制以提供包含预定最大吸收分子量的聚合物的模塑制品。 通过该方法制造的压缩成型制品可用作矫形假体，例如膝盖，髋部，肩部，肘部，腕部，脚踝，手指或脚趾关节置换部件。

公开(公告)号：US20090084257A1

公开(公告)日：2009-04-02

申请号：US11905350

申请日：2007-09-28

申请人： Christopher Paul Buckley ,  Dinesh P. Desai

发明人： Christopher Paul Buckley ,  Dinesh P. Desai

IPC分类号： F15B13/042

CPC分类号： F15B15/224 ,  F15B15/222

摘要： A hydraulic cylinder for use with a machine is disclosed. The hydraulic cylinder including a tube having a first end and a second end and a cap assembly connected to the first end of the tube to close off the first end. The hydraulic cylinder also includes a piston assembly having a piston rod and being movably disposed within the tube to move between the first end and the second end. The hydraulic cylinder further includes a valve plunger connected to the cap assembly and having a first axial bore and a plurality of radially oriented passages. The plurality of radially oriented passages being configured to sequentially restrict fluid flow through the first axial bore as the piston assembly approaches the first end of the tube.

摘要翻译： 公开了一种用于机器的液压缸。 液压缸包括具有第一端和第二端的管和连接到管的第一端的帽组件，以封闭第一端。 液压缸还包括具有活塞杆并且可移动地设置在管内以在第一端和第二端之间移动的活塞组件。 液压缸还包括连接到盖组件并具有第一轴向孔和多个径向取向的通道的阀柱塞。 多个径向取向的通道构造成当活塞组件接近管的第一端时依次限制流过第一轴向孔的流体流动。