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1. 发明授权

US5716540A Apparatus and method for producing center gated lens molds for contact lens manufacture 失效
标题翻译：用于制造隐形眼镜制造中心门控镜片模具的装置和方法
公开(公告)号：US5716540A
公开(公告)日：1998-02-10
申请号：US598883
申请日：1996-02-09
申请人： Thomas A. Matiacio , Keith T. O'Brien , Victor Lust , Jeffrey H. Roffman , Kornelis Renkema , Wybren van der Meulen , Franciscus Paridaans , Jan van Lievenoogen
发明人： Thomas A. Matiacio , Keith T. O'Brien , Victor Lust , Jeffrey H. Roffman , Kornelis Renkema , Wybren van der Meulen , Franciscus Paridaans , Jan van Lievenoogen
IPC分类号： G02C7/04 , B29C33/00 , B29C45/26 , B29C45/27 , B29C45/36 , B29D11/00 , B29L11/00
CPC分类号： B29D11/0048 , B29C33/0077 , B29C45/26 , B29C45/27 , B29D11/00125 , B29C2045/0029 , B29L2011/0016 , Y10S425/808
摘要： A method and apparatus for the manufacture of lens molds used in the formation of optical contact lenses, the apparatus including a center gate aligned on the central axis of the lens mold cavity for delivery of the melt polymer in an axisymmetrical manner. The methodology produces lens molds of extremely precise dimensions as measured against lens molds produced with side gated technology.
摘要翻译：用于制造用于形成光学隐形眼镜的透镜模具的方法和装置，该装置包括在透镜模腔的中心轴上对准的中心门，用于以轴对称的方式输送熔体聚合物。该方法生产的镜片模具具有非常精确的尺寸，可以用侧门技术生产的镜片模具进行测量。

2. 发明授权

US4786181A Extruder screw and method for extruding liquid crystalline polymers 失效
标题翻译：挤出机螺杆和挤出液晶聚合物的方法
公开(公告)号：US4786181A
公开(公告)日：1988-11-22
申请号：US121285
申请日：1987-11-16
申请人： Keith T. O'Brien
发明人： Keith T. O'Brien
IPC分类号： B29C47/62 , B28C1/16 , B28C3/00 , B29B1/04
CPC分类号： B29C47/62 , B29C47/60 , B29C47/625 , B29C47/0016 , B29C47/0023 , B29K2105/0079
摘要： The present invention relates to a novel extruder screw and method for extruding low melt viscosity polymers which form an anisotropic melt phase. In a preferred embodiment, the method and apparatus according to the present invention employ a high rate of rotational speed of the extruder screw in combination with a relatively low compression ratio and a high volume rate of flow through a compression section in order to effectively extrude the low melt viscosity liquid crystalline polymers. The particular design of the screw is dictated by the unique rheology of the polymers which are difficult to effectively move along the helix of the screw due, in part, to the extremely low viscosity. Each dimension and each relative size of the various sections of the screw must be carefully controlled in order to effectively extrude the unique material.
摘要翻译：本发明涉及一种新型的挤出机螺杆和挤出形成各向异性熔融相的低熔点粘度聚合物的方法。在优选实施例中，根据本发明的方法和装置采用高速挤出机螺杆的转速与压缩比相对较低的压缩比和大体积的流动速率结合在一起，以有效地挤出低熔体粘度液晶聚合物。螺杆的特定设计由聚合物的独特流变学决定，这些流变性难以有效地沿螺杆的螺旋移动，部分原因是极低的粘度。必须仔细控制螺丝的各个部分的每个尺寸和每个相对尺寸，以有效地挤压独特的材料。

3. 发明授权

US4729662A Method for extruding liquid crystalline polymers 失效
标题翻译：挤出液晶聚合物的方法
公开(公告)号：US4729662A
公开(公告)日：1988-03-08
申请号：US847387
申请日：1986-04-02
申请人： Keith T. O'Brien
发明人： Keith T. O'Brien
IPC分类号： B29C47/62 , B28C1/16 , B28C3/00 , B29B1/04
CPC分类号： B29C47/625 , B29C47/60 , B29C47/0016 , B29C47/0023 , B29K2105/0079
摘要： The present invention relates to a novel extruder screw and method for extruding low melt viscosity polymers which form an anisotropic melt phase. In a preferred embodiment, the method and apparatus according to the present invention employ a high rate of rotational speed of the extruder screw in combination with a relatively low compression ratio and a high volume rate of flow through a compression section in order to effectively extrude the low melt viscosity liquid crystalline polymers. The particular design of the screw is dictated by the unique rheology of the polymers which are difficult to effectively move along the helix of the screw due, in part, to the extremely low viscosity. Each dimension and each relative size of the various sections of the screw must be carefully controlled in order to effectively extrude the unique material.
摘要翻译：本发明涉及一种新型的挤出机螺杆和挤出形成各向异性熔融相的低熔点粘度聚合物的方法。在优选实施例中，根据本发明的方法和装置采用高速挤出机螺杆的转速与压缩比相对较低的压缩比和大体积的流动速率结合在一起，以有效地挤出低熔体粘度液晶聚合物。螺杆的特定设计由聚合物的独特流变学决定，这些流变性难以有效地沿螺杆的螺旋移动，部分原因是极低的粘度。必须仔细控制螺丝的各个部分的每个尺寸和每个相对尺寸，以有效地挤压独特的材料。

4. 发明授权

US5454192A Automatic door sweep 失效
标题翻译：自动门扫
公开(公告)号：US5454192A
公开(公告)日：1995-10-03
申请号：US83101
申请日：1993-06-25
申请人： Richard S. Adler , Blake G. Sloan , Keith T. O'Brien , Edwin L. Jesse
发明人： Richard S. Adler , Blake G. Sloan , Keith T. O'Brien , Edwin L. Jesse
IPC分类号： E06B7/20 , E06B7/215
CPC分类号： E06B7/215 , E06B7/20
摘要： A sealing device automatically seals a gap between a door bottom and a floor in response to closing movement of the door. The sealing device includes a support element attachable to the door bottom, a seal actuating element movably supported from the support element by spring elements, and a sealing element carried by the seal actuating element. The sealing device may be mounted to the inside or outside of a door, or mortise-mounted in the door, and may be mounted to left- or right-opening hinged doors, or to sliding or articulated closures, and may be provided as an after market or OEM device. The spring elements in the preferred embodiment are one-piece and are integrally connected to both the support element and the seal actuating element, thereby forming a one-piece sealing device preferably made of plastic. In embodiments where lateral movement of the seal actuating element is required to seal the gap, a projection on the seal actuating element is engaged by a door jamb surface or an element attached thereto during door opening and closing. A cover for the device is attached without fasteners e.g., by snap-fitting or slide fitting, and may act as a kick plate, and may be decorative. The length of the sealing device may be easily reduced or expanded to fit various size doors. The invention also provides a device which holds the seal actuating element a predetermined distance from the support element during installation of the device on the door to facilitate installation.
摘要翻译：密封装置响应于门的关闭运动自动地密封门底部和地板之间的间隙。密封装置包括可附接到门底部的支撑元件，通过弹簧元件从支撑元件可移动地支撑的密封件致动元件以及由密封件致动元件承载的密封元件。密封装置可以安装到门的内部或外部，或者安装在门中的榫眼，并且可以安装到左开或右开铰链的门，或者被安装到滑动或铰接的封闭件上，并且可以被设置为后市场或OEM设备。优选实施例中的弹簧元件是一体的并且一体地连接到支撑元件和密封件致动元件两者，从而形成优选由塑料制成的一体式密封装置。在需要密封致动元件的侧向移动以密封间隙的实施例中，密封件致动元件上的突起在门打开和关闭期间被门侧柱表面或附接到其上的元件接合。用于装置的盖子没有紧固件附接，例如通过卡扣配合或滑动配合，并且可以用作踢脚板，并且可以是装饰性的。密封装置的长度可以容易地减小或扩大以适合各种尺寸的门。本发明还提供了一种装置，该装置在将装置安装在门上时将密封致动元件保持与支撑元件预定距离以便于安装。

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