公开(公告)号：US06145799A

公开(公告)日：2000-11-14

申请号：US187681

申请日：1998-11-05

申请人： Trinh Cam Khon

发明人： Trinh Cam Khon

IPC分类号： A47B21/04 ,  B42F9/00 ,  B42F11/04 ,  G09F7/04 ,  B41J11/02 ,  A47G1/17

CPC分类号： B42F9/001 ,  A47B21/045 ,  B42F11/04 ,  G09F7/04 ,  A47B2200/0094

摘要： A device that incorporates magnetic componentry frictionally engage one or more sheets of paper therebetween is provided. The magnetic componentry of the invention is selected to exert sufficient magnetic force therebetween to retain the paper. The invention includes a magnetic backing member and a ferromagnetic retaining clip rotatably coupled thereto for frictionally engaging paper therebetween. The retaining clip may have an upturned end to facilitate disposing paper between the clip and backing member. The backing member and retaining clip are selected so that the backing member exerts just enough magnet force on the retaining clip to draw the clip against the backing member with enough pressure to retain up to several thin sheets of paper therebetween. The present invention is well suited for one-handed operation thereof.

摘要翻译： 提供了一种结合有磁性组件的装置，它们之间摩擦接合一张或多张纸。 选择本发明的磁性组件以在其间施加足够的磁力来保持纸张。 本发明包括磁性背衬构件和可旋转地联接到其上的铁磁保持夹，用于摩擦地接合它们之间的纸。 保持夹可以具有向上的端部，以便于在夹子和背衬构件之间布置纸张。 背衬构件和固定夹被选择成使得背衬构件在保持夹上施加刚好足够的磁力，以足够的压力将夹子拉靠在背衬构件上，以在其间保持多达几张薄纸。 本发明非常适合于单手操作。

公开(公告)号：US5987715A

公开(公告)日：1999-11-23

申请号：US60742

申请日：1998-04-15

申请人： Trinh Cam Khon

发明人： Trinh Cam Khon

IPC分类号： A41F1/00 ,  A45C13/10 ,  A44B21/00

CPC分类号： A41F1/002 ,  A45C13/1069 ,  Y10T24/1959 ,  Y10T24/32 ,  Y10T292/11

摘要： A magnetic closure device for personal effect carriers such as purses, pouches, day packs, and backpacks is provided. The invented closure device comprises a flap assembly affixed to a flap of the carrier and a receiving assembly affixed to the sidewall of the carrier. The receiving assembly is configured similar to the flap assembly, so that the receiving assembly mates with the flap assembly. The receiving assembly is provided with a projecting member configured to extend through the opening in the flap assembly, without projecting substantially beyond a cover plate thereof. The projecting member and opening coact as a guide to enable a user to locate the receiving assembly for quickly interconnecting the two assemblies. A magnet is retained in the receiving assembly for positively securing the flap assembly to the receiving assembly, to inhibit the device from inadvertently releasing. Components of the receiving and flap assemblies are configured to prevent the magnetic field radiated by the magnet from coming into the interior of the carrier and damaging articles stowed therein.

摘要翻译： 提供用于个人作用载体的磁性封闭装置，例如钱包，袋，日用包和背包。 本发明的闭合装置包括固定到载体的翼片上的翼片组件和固定到载体侧壁的接收组件。 接收组件被类似于翼片组件构造，使得接收组件与翼片组件配合。 接收组件设置有突出构件，其构造成延伸穿过瓣组件中的开口，而不突出地突出超过其盖板。 突出构件和开口共同作为引导件，以使用户能够定位接收组件以快速地连接两个组件。 磁体保持在接收组件中，用于将翼片组件积极地固定到接收组件，以阻止装置不经意地释放。 接收和翼片组件的部件被构造成防止由磁体辐射的磁场进入载体的内部并损坏其中收纳的物品。

公开(公告)号：US5967767A

公开(公告)日：1999-10-19

申请号：US60935

申请日：1998-04-15

申请人： Trinh Cam Khon

发明人： Trinh Cam Khon

IPC分类号： F23Q2/40 ,  F23Q25/00 ,  E05C17/56

CPC分类号： F23Q2/40 ,  Y10T292/11

摘要： An improved portable cigarette lighter closure device that provides facile pivoting of the cover between open and closed positions, and which securely retains the cover in the closed position is provided. The closure device incorporates a magnet affixed in the cover of a cigarette lighter, for securing the cover to a body of the lighter and to securely retain the cover in the closed position. The magnet exerts sufficient force on the body to retain the cover in the closed position, while enabling one handed pivoting of the cover by the user. Additionally the invention may be provided with an insulating sleeve. The ferromagnetic insulating sleeve prevents the magnetic field radiated by the magnet from passing through the cover of the lighter, for preventing magnetically attracted objects located in a pocket of the user's clothing such as the users keys and change for example, from being inadvertently drawn against the cover of the lighter.

摘要翻译： 提供了一种改进的便携式点烟器闭合装置，其提供盖在打开和关闭位置之间的容易的枢转，并且将盖牢固地保持在关闭位置。 闭合装置包括固定在点烟器的盖子中的磁体，用于将盖子固定到打火机的主体上，并将盖子牢固地保持在关闭位置。 磁体在主体上施加足够的力以将盖保持在关闭位置，同时使用者能够一次性地旋转盖。 另外，本发明可以设置有绝缘套管。 铁磁绝缘套管防止由磁体辐射的磁场穿过打火机的盖子，以防止位于使用者衣物的口袋内的磁吸引物体，例如使用者的钥匙，并且改变例如不经意地被拉向 打火机的盖子。

公开(公告)号：US5750671A

公开(公告)日：1998-05-12

申请号：US748706

申请日：1996-11-13

申请人： Trinh Cam Khon

发明人： Trinh Cam Khon

IPC分类号： C12N15/10 ,  C07H21/04 ,  C07H1/08

CPC分类号： C12N15/1003

摘要： This invention relates to a method for isolating DNA from biological cells containing protamines. The biological parent material is decomposed using salts with low molecular weight above a critical ionic strength cleaving all ionic bonds between DNA and protamines and polystyrene sulfonic acid (PSA) and/or its derivatives in combination with sodium lauryl sulfate. These substances, together with protamines at pH values ranging from 7.5 to 8.5, form insoluble polyelectrolyte complexes facilitating the release of DNA from its natural complexes which can then be precipitated using ethanol. The method according to the invention is fundamentally different from conventional methods as it uses neither enzymes nor toxic extracting agents such as chloroform or phenol. The method according to the invention is very efficient and non-polluting; it can be carried out easily and yields products with a high degree of purity. As the treatment is very gentle, this method is suitable to purify DNA of very high molecular weight.

摘要翻译： 本发明涉及从含有精蛋白的生物细胞中分离DNA的方法。 使用低于临界离子强度的盐分解生物母体材料，从而切割DNA与蛋氨酸和聚苯乙烯磺酸（PSA）和/或其衍生物与十二烷基硫酸钠的组合之间的所有离子键。 这些物质与pH值范围为7.5-8.5的鱼精蛋白一起形成不溶性聚电解质配合物，促进从其天然配合物释放DNA，然后可以使用乙醇沉淀。 根据本发明的方法与常规方法基本不同，因为它既不使用酶也不使用毒性提取剂如氯仿或苯酚。 根据本发明的方法是非常有效和无污染的; 它可以容易地进行并产生具有高纯度的产品。 由于治疗非常温和，该方法适用于纯化非常高分子量的DNA。

公开(公告)号：US5819451A

公开(公告)日：1998-10-13

申请号：US802017

申请日：1997-02-18

申请人： Trinh Cam Khon

发明人： Trinh Cam Khon

IPC分类号： B42D9/00 ,  B41J11/38

CPC分类号： B42D9/008

摘要： An electronic bookmark for a copy holder that aids a user's ability to ascertain viewed text on paper retained by the copy holder is provided. The invented copy holder includes vertically adjustable indicating device that directs the user's attention to text adjacent without the use of a guide or illumination of the paper, so that text is not obscured or distorted. The copy holder comprises a backboard for retaining paper thereon and a plate rotatably coupled thereto. The plate has a bottom surface configured to releasably couple the plate to the backboard without interfering with paper interposed therebetween. The indicating device comprises a display that extends along a top surface of the plate. The display preferably comprises an array of electrodes, such as a liquid crystal display, light emitting diodes, or signal lamps, with desired segments of an array activated for directing a users attention to a selected portion of text on the document. Control device for activating desired segments of the array are coupled to the display. The control device enables the user to scroll the indicating device along the display for directing their attention to any desired portion of text. Since text is not obscured by the invention, the user can view text without any distractions caused by the indicating device. The invented copy holder has dimensions equivalent to non-electronically enhanced copy holders.

摘要翻译： 提供了一种帮助用户识别由复印机保留的纸张上查看文本的复印机的电子书签。 本发明的副本保持器包括垂直可调节的指示装置，其指导用户对文本的注意，而不使用纸张的引导或照明，使得文本不被遮蔽或失真。 复印架包括用于将纸张保持在其上的背板和可旋转地联接到其上的板。 板具有底面，其被配置为将板可释放地联接到背板而不干涉插入其间的纸。 指示装置包括沿着板的顶表面延伸的显示器。 显示器优选地包括诸如液晶显示器，发光二极管或信号灯的电极阵列，其具有激活的用于引导用户注意文档上的所选部分文本的阵列的期望的段。 用于激活阵列的所需段的控制装置耦合到显示器。 控制装置使用户能够沿着显示器滚动指示装置，以将它们的注意力引导到文本的任何所需部分。 由于文本不被本发明遮蔽，所以用户可以观看文本而不会由指示装置引起的干扰。 本发明的副本持有人的尺寸相当于非电子增强型复本。