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1. 发明授权

US06381990B1 Draw furnace sealing assembly and method 失效
标题翻译：绘图炉密封组装及方法
公开(公告)号：US06381990B1
公开(公告)日：2002-05-07
申请号：US09400155
申请日：1999-09-21
申请人： Steven Craig Ball , John Morris Barnard, Sr. , James Alan Snipes
发明人： Steven Craig Ball , John Morris Barnard, Sr. , James Alan Snipes
IPC分类号： C03B37029
CPC分类号： C03B37/02736 , C03B37/029 , C03B2205/63 , C03B2205/80 , C03B2205/96 , Y02P40/57
摘要： An apparatus and method for sealing the top of an optical waveguide draw furnace is disclosed. The apparatus includes an assembly constructed and arranged to removably cover the top of the draw furnace while mating with the downfeed handle. The apparatus includes an elongated sleeve having a base and a sealing mechanism positioned on the sleeve at a location remote from the base. The sleeve defines a chamber for receiving the downfeed handle, and the sealing mechanism is arranged with respect to the sleeve to mate with the downfeed handle received in the chamber. In one aspect of the invention, the apparatus further includes an inert gas purge for providing an inert atmosphere within the chamber. A method of sealing the top of an optical waveguide draw furnace is also disclosed.
摘要翻译：公开了一种用于密封光波导拉制炉顶部的装置和方法。该装置包括构造和布置成可拆卸地覆盖拉制炉的顶部同时与向下进给手柄配合的组件。该装置包括细长的套筒，其具有底座和位于远离基座的位置处的套筒上的密封机构。套筒限定了用于接收向下进给手柄的腔室，并且密封机构相对于套筒布置以与容纳在腔室中的向下进给手柄相配合。在本发明的一个方面，所述设备还包括用于在所述室内提供惰性气氛的惰性气体吹扫。还公开了一种密封光波导拉制炉顶部的方法。

2. 发明授权

US06244099B1 Draw furnace sealing assembly and method 失效
标题翻译：绘图炉密封组装及方法
公开(公告)号：US06244099B1
公开(公告)日：2001-06-12
申请号：US09400400
申请日：1999-09-21
申请人： Steven Craig Ball , John Morris Barnard, Sr. , James Alan Snipes
发明人： Steven Craig Ball , John Morris Barnard, Sr. , James Alan Snipes
IPC分类号： G01M308
CPC分类号： C03B37/0253 , C03B37/029 , C03B2205/82 , Y02P40/57
摘要： An apparatus and method for sealing the bottom of an optical waveguide draw furnace is disclosed. The apparatus includes an assembly constructed and arranged to mate with the bottom of the draw furnace to form a seal, and a leak detection system communicating with the assembly to signal the forming of a proper or an improper seal. The covering plate of the assembly is selectively seated on the sealing plate of the draw furnace to form the seal, and an inert gas is delivered between the covering plate and the bottom of the draw furnace. The flow of the inert gas is detected to determine if the seal has been properly formed. An assembly including a covering plate having at least two radially spaced gaskets circumferentially positioned on the top surface of the covering plate for engagement with the sealing plate at the bottom of the draw furnace, and a method for sealing the bottom of a draw furnace are also disclosed.
摘要翻译：公开了一种用于密封光波导拉制炉底部的装置和方法。该装置包括构造和布置成与拉制炉的底部配合以形成密封件的组件，以及与该组件通信的泄漏检测系统，以指示形成适当或不正确的密封。组件的盖板选择性地安置在拉丝炉的密封板上以形成密封，并且在覆盖板和拉丝炉的底部之间输送惰性气体。检测惰性气体的流量，以确定密封件是否已正确形成。一种组件，包括具有至少两个径向隔开的垫片的覆盖板，其周向地设置在覆盖板的顶表面上，用于与拉制炉底部的密封板接合，以及用于密封拉丝炉底部的方法披露

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