公开(公告)号：US3947112A

公开(公告)日：1976-03-30

申请号：US482095

申请日：1974-06-24

申请人： Erich Hahn ,  Frank Reissig

发明人： Erich Hahn ,  Frank Reissig

IPC分类号： G01J1/42 ,  G03B27/74 ,  G03B27/76

CPC分类号： G01J1/4223

摘要： A document photographing device has a surface for supporting a document to be photographed, a camera positioned about the surface, to receive light reflected from and transmitted by a document supported on the surface, and separate means for illuminating the document from above and below respectively. An exposure meter receives light reflected from or transmitted through the document and indicates when correct exposure conditions have been set. The exposure meter includes correction means for correcting the reading of the exposure meter to take account of the different spectral radiation characteristics of the illuminating means.

公开(公告)号：US06351970B1

公开(公告)日：2002-03-05

申请号：US09701240

申请日：2001-02-22

申请人： Erich Hahn ,  Wilhelm Rohde ,  Jürgen Voit

发明人： Erich Hahn ,  Wilhelm Rohde ,  Jürgen Voit

IPC分类号： F25J100

CPC分类号： F25J3/04751 ,  F25J3/028 ,  F25J3/04745 ,  F25J2200/32 ,  F25J2200/34 ,  F25J2205/30 ,  F25J2210/42 ,  F25J2210/50 ,  F25J2215/34 ,  F25J2215/36 ,  Y10S62/925

摘要： The invention relates to a method for extracting xenon and eventually also krypton from a liquid oxygen (LOX) charge, as it accrues in a cryogenic air separation system (LZA) during a rectification of the air, mostly as a bottom product of a low-pressure, column, namely with xenon (Xe), krypton (Kr) and hydrocarbons (CxHy) in a small concentration and approximately 99 mol % oxygen (O2). According to the inventive method, the LOX charge is fed to a first column, the oxygen of the LOX charge is extensively removed by stripping with an inert gas, and is extracted in the top gas, whereas the inert gas is withdrawn in the form of a liquid from the bottom of the first column with little O2 and nearly the total mass of CxHy, Kr, Xe. According to the invention, the liquid discharge is fed to a second column without prior catalytic and/or adsorptive removal of CxHy. A Kr fraction is extracted as top gas of the second column, and an Xe fraction is withdrawn from the bottom of the second column. The method can be used in a device for extracting Xe and/or Kr in an air separation system (LZA). The device can be arranged in a transportable container.

摘要翻译： 本发明涉及一种用于在空气整流期间在低温空气分离系统（LZA）中产生的从液氧（LOX）装料中提取氙并最终还氪的方法，主要作为低温空气分离系统的底部产物， 压力，柱，即氙（Xe），氪（Kr）和碳氢化合物（CxHy）在小浓度和约99mol％的氧气（O2）。 根据本发明的方法，将LOX装料进料到第一塔中，通过用惰性气体汽提来广泛地除去LOX装料的氧气，并在顶部气体中提取，而惰性气体以 来自第一列底部的液体几乎没有O2，几乎总C 6 H y，Kr，Xe的质量。 根据本发明，将液体排放物进料至第二塔，无需事先催化和/或吸附除去CxHy。 提取Kr馏分作为第二塔的顶部气体，并且从第二塔的底部排出Xe馏分。 该方法可用于在空气分离系统（LZA）中提取Xe和/或Kr的装置。 该装置可以布置在可运输的容器中。

公开(公告)号：US06453898B1

公开(公告)日：2002-09-24

申请号：US09494426

申请日：2000-01-31

申请人： Frieder Altmann ,  Erich Hahn

发明人： Frieder Altmann ,  Erich Hahn

IPC分类号： F41G1467

CPC分类号： F41G1/467 ,  F41B5/14

摘要： A cover is provided to protect the sight of an archery bow from distortion caused by falling precipitation, regardless of the horizontal position of the bow. The bow is provided with a sight having a lens; the sight is attached to the bow by a bracket. A cover is pivotally attached to the bracket, and includes an upper protective hood over the sight, and a lower counterweight. The counterweight is of sufficient weight so that the cover will pivot about the bracket as the bow is pivoted about a horizontal axis, or laid down, so the hood will maintain its protective position above the sight.

摘要翻译： 提供了一个盖子，以保护射箭弓的视线免受由降水引起的变形，不管弓的水平位置如何。 弓提供有一个镜头的视线; 视线通过支架附着在弓上。 盖子可枢转地附接到支架上，并且包括在视线上的上保护罩和下配重。 配重具有足够的重量，使得当弓围绕水平轴线枢转或者放下时，盖将围绕支架枢转，因此罩将保持其在视线上方的保护位置。