公开(公告)号：CA2363676A1

公开(公告)日：2000-08-31

申请号：CA2363676

申请日：2000-02-10

Applicant: CORNING INC

Inventor： SNIPES JAMES A ,  BARNARD JOHN M SR ,  BALL STEVEN C

IPC: C03B37/027 ,  C03B37/029

Abstract: An apparatus and method for sealing the top (preform entry end) of an optica l waveguide fiber draw furnace is disclosed. The apparatus includes an assembl y (10) constructed and arranged to removably cover the top of the draw furnace (60) while mating with the downfeed handle (28). The apparatus includes an elongated sleeve (12) having a base (16) and a sealing mechanism (18) positioned on the sleeve at a location remote from the base. The sleeve (12) defines a chamber (50) for receiving the downfeed handle (28), and the seali ng mechanism (18) 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 (22, 24, 26) for providing an inert atmosphere within the chamber (50). A method of sealing the top of an optical waveguide fiber draw furnace is also disclosed.

公开(公告)号：CA2363673A1

公开(公告)日：2000-08-31

申请号：CA2363673

申请日：2000-02-10

Applicant: CORNING INC

Inventor： SNIPES JAMES A ,  BARNARD JOHN M SR ,  BALL STEVEN C

IPC: C03B37/025 ,  C03B37/029

Abstract: An apparatus and method for sealing the bottom of an optical waveguide draw furnace is disclosed. The apparatus includes an assembly (10) constructed an d arranged to mate with the bottom (70) of the draw furnace (51) to form a sea l, and a leak detection system communicating with the assembly to signal the forming of a proper or an improper seal. The covering plate (12) of the assembly is selectively seated on the sealing plate (72) of the draw furnace (51) to form the seal, and an inert gas is delivered between the covering plate (12) and the bottom (70) of the draw furnace. The flow of the inert ga s is detected to determine if the seal has been properly formed. An assembly (10) including a covering plate (12) having at least two radially spaced gaskets (18, 20) circumferentially positioned on the top surface (14) of the covering plate (12) for engagement with the sealing plate (72) at the bottom (70) of the draw furnace (51), and a method for sealing the bottom of a draw furnace are also disclosed. Sealing the bottom of sucha draw furnace occurs during preform loading and unloading as well as during idle periods, i.e. those periods when no optical fiber is being drawn from the preform.

公开(公告)号：CA2267970A1

公开(公告)日：1998-05-07

申请号：CA2267970

申请日：1997-10-03

Applicant: CORNING INC

Inventor： DUNN JULIAN L ,  DICKINSON JAMES E ,  GLAESEMANN G SCOTT ,  REDING BRUCE W ,  SNIPES JAMES A ,  WISSUCHEK DONALD J JR ,  HAJCAK PAMELA A

IPC: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03B37/027 ,  C03B37/029 ,  C03B29/02

Abstract: A fiber preform (20) is contaminated with contaminates such as silicon nitride or silicon carbide. The preform is then held in a chamber (10) with a reducing gas (29) being introduced into the chamber. The reducing gas prevents the contaminates from being oxidized. If the contaminates were oxidized, the strengh of the final fiber would be reduced.

公开(公告)号：EP1030824A4

公开(公告)日：2000-12-20

申请号：EP98954984

申请日：1998-10-15

Applicant: CORNING INC

Inventor： BALL STEVEN C ,  BARNARD JOHN M ,  SNIPES JAMES A

IPC: G02B6/00 ,  C03B37/029 ,  H05B6/02

CPC classification number: C03B37/029 ,  C03B2205/64 ,  Y02P40/57

Abstract: A furnace (12) has a muffle tube (22) that is coated with silicon carbide. It is tubular. They make a fiber (36) with it.

Abstract translation: 炉（12）具有涂覆有碳化硅的马弗管（22）。 它是管状的。 他们用它制成纤维（36）。

公开(公告)号：EP0963356A4

公开(公告)日：2000-06-14

申请号：EP97910815

申请日：1997-10-03

Applicant: CORNING INC ,  DUNN JULIAN L ,  GLAESEMANN G SCOTT

Inventor： DUNN JULIAN L ,  GLAESEMANN G SCOTT ,  DICKINSON JAMES E JR ,  REDING BRUCE W ,  SNIPES JAMES A ,  WISSUCHEK DONALD J JR

IPC: G02B6/00 ,  C03B37/012 ,  C03B37/014 ,  C03B37/027 ,  C03B37/029

CPC classification number: C03B37/01202 ,  C03B37/01446 ,  C03B37/0146 ,  C03B37/027 ,  C03B37/029 ,  C03B2205/16

Abstract: A fiber preform (20) is contaminated with contaminates such as silicon nitride or silicon carbide. The preform is then held in a chamber (10) with a reducing gas (29) being introduced into the chamber. The reducing gas prevents the contaminates from being oxidized. If the contaminates were oxidized, the strengh of the final fiber would be reduced.

Abstract translation: 纤维预成型件（20）被污染的污染：例如氮化硅或碳化硅。 预成型件，然后在一室（10）与被引入到腔室中的还原性气体（29）保持。 还原气体的氧化防止污染物。 如果污染被氧化，最终纤维的那份力量将会减少。