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    • 23. 发明授权
    • Method and apparatus for making a crystal pre-melt
    • 制造晶体预熔体的方法和装置
    • US07083678B2
    • 2006-08-01
    • US10696453
    • 2003-10-29
    • Daniel W. HawtofNicholas LeBlondChristopher S. Thomas
    • Daniel W. HawtofNicholas LeBlondChristopher S. Thomas
    • C30B13/02C30B13/08C30B13/28
    • C30B29/12C30B11/00C30B35/00
    • An apparatus for making a crystal pre-melt includes a hermetically-sealed muffle furnace made of a non-porous refractory material, at least one port for entry and exit of gaseous substance within the muffle furnace, a temperature-controlled zone defined inside the muffle furnace, and a crucible for holding crystal raw material in solid or molten form inside the muffle furnace. The crystal pre-melt is made by disposing crystal raw material in loose powder, pressed powder, granular, or densified form in the temperature-controlled zone, heating the temperature-controlled zone to a treatment temperature that enables reaction between a fluorinating agent and oxides in the crystal raw material, reacting the fluorinating agent with the crystal raw material to produce volatile gases, removing the volatile gases from the muffle furnace, heating the crystal raw material to form a melt, and solidifying the melt to form the crystal pre-melt.
    • 用于制造晶体预熔体的装置包括由无孔耐火材料制成的气密密封马弗炉,至少一个用于马弗炉内气体物质进出口的端口,限定在马弗炉内的温度控制区域 炉,以及用于在马弗炉内保持固体或熔融形式的晶体原料的坩埚。 通过在温度控制区域中将松散粉末,压粉,颗粒状或致密化形式的晶体原料设置在温度控制区域中,将温度控制区域加热至能够使氟化剂和氧化物之间的反应的处理温度 在晶体原料中,使氟化剂与晶体原料反应以产生挥发性气体,从马弗炉中除去挥发性气体,加热晶体原料以形成熔体,并使熔体固化形成晶体预熔体 。
    • 26. 发明申请
    • YAD INCLUDING MEZUZAH CASEMENT
    • 包括MEZUZAH CASC
    • US20130189450A1
    • 2013-07-25
    • US13356747
    • 2012-01-24
    • Daniel W. Hawtof
    • Daniel W. Hawtof
    • A47G33/00
    • A47G33/00
    • A yad-mezuzah casement includes a yad, at least a portion of which serves as a mezuzah casement. A mezuzah may be contained within the mezuzah casement. The mezuzah casement may be contained within the yad, attached to an outer surface of the yad or interposed between the yad and a bracket that includes an attachment fixture used for mounting the yad-mezuzah casement to a doorpost of a building or a room. The yad-mezuzah casement, which itself includes no attachment fixture, provides an opportunity for continuous display of a yad that may be received by a Jewish youth participant at a B′nai Mitzvah ceremony. Together, the yad-mezuzah casement and the mounting bracket provide a yad-mezuzah casement kit.
    • yad-mezuzah平底包括一个yad,其中至少一部分作为mezuzah平纹。 mezuzah可以包含mezuzah平底锅。 mezuzah平底盒可以包含在yad中,附着在yad的外表面上,或者插入在yad和支架之间,其包括用于将yad-mezuzah平底板安装到建筑物或房间的门柱上的附接夹具。 这个自己没有附件的yad-mezuzah剥皮提供了一个连续显示犹太青年参与者在B'nai Mitzvah仪式可能会收到的屁股的机会。 一起,yad-mezuzah平开窗和安装支架提供一个yad-mezuzah平纸包。
    • 29. 发明授权
    • Maintaining a plug-free system during a silica soot creation process
    • 在二氧化硅烟灰创建过程中维护无铅系统
    • US06739156B1
    • 2004-05-25
    • US09762274
    • 2001-02-01
    • Daniel W. HawtofJohn Stone, IIIJoseph M. Whalen
    • Daniel W. HawtofJohn Stone, IIIJoseph M. Whalen
    • C03B31014
    • C03B19/1415C03B37/01413C03B2207/32C03B2207/34
    • The present invention is directed to a system and method for delivering liquid reactants through a burner assembly to form soot used in the manufacture of glass, and in particular, optical waveguides. Due to the tendency of liquid reactants to react to form solids when exposed to water in the air, an evaporative liquid is first delivered through the burner assembly to the combustion zone. Once steady state liquid flow has been achieved in the system, the evaporative liquid is transitioned to the liquid reactant. The liquid reactant is delivered along the same path to the burner assembly, which discharges the liquid reactant into the combustion zone as an atomized liquid to form soot used in the manufacture of glass. Once the desired quantity of soot has been formed, the liquid reactant is transitioned back to the evaporative liquid while maintaining steady state flow. After the liquid reactant has cleared the system, flow of the evaporative liquid is terminated and the burner assembly flame turned off. Because the evaporative liquid is the last liquid to leave the burner assembly, no reactants are present to form solids and the burner assembly remains plug free. Preferably, the liquid reactants are housed within a dry environment to provide a reaction free area for staging the liquid reactants prior to delivery, thus facilitating and expediting multiple system runs with different liquid reactants.
    • 本发明涉及一种用于通过燃烧器组件输送液体反应物以形成用于制造玻璃,特别是光波导的烟灰的系统和方法。 由于当暴露于空气中的水时液体反应物反应形成固体的倾向,首先通过燃烧器组件将蒸发的液体输送到燃烧区。 一旦在系统中达到稳态液体流动,则蒸发液体转变为液体反应物。 液体反应物沿着相同的路径输送到燃烧器组件,其将液体反应物作为雾化液体排放到燃烧区中,以形成用于制造玻璃的烟炱。 一旦已经形成所需量的烟灰,液体反应物在保持稳态流动的同时转移回蒸发液体。 在液体反应物已经清除系统之后,蒸发液体的流动被终止并且燃烧器组件的火焰被关闭。 因为蒸发液体是离开燃烧器组件的最后一个液体,所以不存在反应物以形成固体并且燃烧器组件保持无堵塞。 优选地,液体反应物容纳在干燥环境中以提供反应自由区域,用于在输送之前分级液体反应物,从而促进并加速与不同液体反应物的多次系统运行。