公开(公告)号：US20140055741A1

公开(公告)日：2014-02-27

申请号：US13975868

申请日：2013-08-26

申请人： Karen L. Havenstrite ,  Victor Wayne McCray ,  Brandon McNary Felkins ,  Douglas Michael Ackermann ,  Garrett Cale Smith ,  Paul A. Cook ,  Evan S. Luxon ,  Andrew A. McGibbon

发明人： Karen L. Havenstrite ,  Victor Wayne McCray ,  Brandon McNary Felkins ,  Douglas Michael Ackermann ,  Garrett Cale Smith ,  Paul A. Cook ,  Evan S. Luxon ,  Andrew A. McGibbon

IPC分类号： G02B1/04

CPC分类号： G02C7/049 ,  C08L5/08 ,  C08L71/00 ,  C08L2203/02 ,  C08L2205/025 ,  C09D105/08 ,  C09D171/00 ,  G02B1/043 ,  G02C2202/16 ,  C08L101/14

摘要： Embodiments of the technology relate to a contact lens having a core that is covalently coated by a hydrogel layer, and to methods of making such a lens. In one aspect, embodiments provide for a coated contact lens comprising a lens core comprising an outer surface; and a hydrogel layer covalently attached to at least a portion of the outer surface, the hydrogel layer adapted to contact an ophthalmic surface, wherein the hydrogel layer comprises a hydrophilic polymer population having a first PEG species and a second PEG species, the first PEG species being at least partially cross-linked to the second PEG species.

摘要翻译： 该技术的实施方案涉及具有由水凝胶层共价涂覆的芯的隐形眼镜以及制造这种透镜的方法。 在一个方面，实施例提供了一种涂覆的隐形眼镜，其包括包括外表面的透镜芯; 以及水凝胶层，其共价连接到所述外表面的至少一部分，所述水凝胶层适于接触眼表面，其中所述水凝胶层包含具有第一PEG种类和第二PEG物质的亲水聚合物群体，所述第一PEG种类 至少部分地与第二PEG种类交联。

公开(公告)号：US4319174A

公开(公告)日：1982-03-09

申请号：US136002

申请日：1980-03-31

申请人： Paul A. Cook ,  Randall D. Mayo ,  Jerry W. Raider

发明人： Paul A. Cook ,  Randall D. Mayo ,  Jerry W. Raider

IPC分类号： H02P8/24 ,  H02P8/32 ,  G05B19/40

CPC分类号： H02P8/32

摘要： A stepper motor damping control system. Damping is performed by switching the power supply connection(s) of energized motor phase windings alternatively ON and OFF at a predetermined relatively high fixed rate. Said switching is performed using a clock signal information for switching one way and an information denoting equality between a voltage substantially proportional to the current flowing through said motor phase windings with a predetermined sawtooth sloped reference signal synchronized with said clock signal for switching the other way.

摘要翻译： 步进电机阻尼控制系统。 通过以预定的相对高的固定速率交替地接通和断开通电的电动机相绕组的电源连接来执行阻尼。 使用用于切换单向的时钟信号信息和表示与流过所述电动机相绕组的电流基本成比例的电压与用于切换另一种方式同步的预定锯齿波参考信号的预定锯齿波参考信号进行所述切换。

公开(公告)号：US4005287A

公开(公告)日：1977-01-25

申请号：US599474

申请日：1975-07-28

申请人： Paul A. Cook

发明人： Paul A. Cook

IPC分类号： G06K7/10 ,  H01J5/02

CPC分类号： G06K7/10881

摘要： Apparatus for attaching a nose section to the main body of a hand-held optical reader (Wand) is provided to accommodate the replacement of internal lamps illuminating a field of information. A nose attachment having a centrally located aperture encompassed by an integral and externally threaded cylindrical extension is secured to the nose section. The aperture and cylindrical extension are aligned and concentric with the optical image path of the Wand. In attaching the nose section to the Wand main body, the cylindrical extension is passed through an aperture in a partitioning frame of the Wand into which the lamps are seated. A screw-on cap, having a centrally located aperture with internal helical threads complementing the external threads of the nose attachment extension, is screwed onto the extension to secure the nose section to the partitioning frame. An outwardly extending flange integrally formed on the cap extends through opposing apertures of the Wand outer covers to accommodate access by hand. When the lamps are to be removed, a tangential force couple is applied by hand to the flange of the cap to detach the nose section, and thereby expose the lamps. Captive surfaces formed onto the nose attachment and the partitioning frame prevent lateral movement between the nose section and the Wand, and confine the movement of the screw-on cap within the Wand when the nose section is detached.

摘要翻译： 用于将鼻部部分附接到手持式光学读取器（Wand）的主体的装置被提供以适应照亮信息领域的内部灯的更换。 具有由整体和外螺纹的圆柱形延伸部包围的中心定位的孔的鼻部附件固定到鼻部。 孔径和圆柱形延伸部分与芯棒的光学图像路径对准并同心。 在将鼻部连接到魔杖主体时，圆柱形延伸部穿过灯座所在的魔杖的分隔框架中的孔。 具有中心定位的孔的螺旋盖被螺纹连接到延伸部上，以将鼻部固定到分隔框架上，该孔具有与鼻部附件延伸部的外螺纹互补的内部螺旋形螺纹。 一体地形成在盖上的向外延伸的凸缘延伸穿过外壳的相对的孔，以适应手的通路。 当灯被去除时，用手将切向力联接到盖的凸缘以分离鼻部，从而露出灯。 形成在鼻子附件和分隔框架上的遮盖表面防止鼻部和魔杖之间的横向运动，并且当鼻部分离时将螺旋盖的运动限制在魔杖内。