With Bushing Flood Prevention, Removal, Or Breakout Prevention Patents (Class 65/471)
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Patent number: 8689586Abstract: A glass-melting device for producing glass fibers capable effectively reducing inclusion of bubbles into glass fibers to be spun, and a method for producing glass fibers using the same are provided. A glass-melting device 100 for producing glass fibers comprises: a first glass-melting tank 12; a conduit 14 extending downward from the first glass-melting tank 12; a sucking device 18 for exposing the first glass-melting tank 12 to a reduced-pressure atmosphere; a second glass-melting tank 20 provided on a lower portion of the conduit 14 and exposed to an atmospheric-pressure atmosphere; and a bushing 22 provided at a bottom portion of the second glass-melting tank 20 and equipped with a number of nozzles 22a.Type: GrantFiled: March 8, 2010Date of Patent: April 8, 2014Assignee: Nitto Boseki Co., Ltd.Inventors: Norio Hirayama, Naohiro Miyanaga, Masahiko Takahashi, Kentarou Ogawa
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Patent number: 8627686Abstract: The automatic strand take-up installation comprises at least one gripping member (12) for taking hold of at least one strand coming from a bushing (2), the gripping member being guided by a single conveying loop (1) to the vicinity of a chopper (7). One system for maneuvering the gripping member allows the gripping member (12) to be opened and closed in such a way as to release said strand at the chopper (7).Type: GrantFiled: July 20, 2006Date of Patent: January 14, 2014Assignee: OCV Intellectual Capital, LLCInventors: Philippe Boissonnat, Jean-Paul Boisset, Frederic Skura, Danyele Rey, Natacha Karbowski, Marie Karbowski, Sarah Karbowski, Lydia Karbowski
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Publication number: 20110277512Abstract: Fiberizing bushings for fiberizing molten materials including molten glass are heated by applying a voltage drop across the bushings wherein molten material flows through an array of hollow tips attached to, or integral with, a tip plate having orifices therein that generally align with channels through the hollow tips to form fibers. The uniformity of the diameter of the fibers produced is much improved by using tips of different lengths and/or tips having channels of differing ID's to compensate for unequal electrical heating and/or cooling effects of drawn-in ambient air that cools the tips on the extreme outer periphery and/or cooling or heating effects of external supports or cooling members running through the array of tips that cools or heats adjacent tips more than the interior tips.Type: ApplicationFiled: July 21, 2011Publication date: November 17, 2011Inventors: ChangQing Shen, Alessandro G. Borsa, Terry Hanna
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Patent number: 8006519Abstract: Fiberizing bushings for fiberizing molten materials including molten glass are heated by applying a voltage drop across the bushings wherein molten material flows through an array of hollow tips attached to, or integral with, a tip plate having orifices therein that generally align with channels through the hollow tips to form fibers. The uniformity of the diameter of the fibers produced is much improved by using tips of different lengths and/or tips having channels of differing ID's to compensate for unequal electrical heating and/or cooling effects of drawn-in ambient air that cools the tips on the extreme outer periphery and/or cooling or heating effects of external supports or cooling members running through the array of tips that cools or heats adjacent tips more than the interior tips.Type: GrantFiled: April 10, 2007Date of Patent: August 30, 2011Assignee: Johns ManvilleInventors: ChangQing Shen, Alessandro G. Borsa, Terry Hanna
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Patent number: 7194874Abstract: A bushing for fiberizing molten material, such as molten glass, having a screen mounted in the bushing spaced above the tip or orifice plate with a central portion of the screen having a significantly lower percent of hole area than the percent of hole area in end portions of the screen. This bushing improves fiberizing efficiency in channel positions of a fiberizing operation. Also, such a screen can be laid on top of a conventional screen to convert a normal bushing to a channel position bushing. Methods of using these types of bushings to improve fiberization in the channel positions and for modifying conventional bushings for other uses are also disclosed.Type: GrantFiled: September 15, 1997Date of Patent: March 27, 2007Assignee: Johns ManvilleInventor: Russell Donovan Arterburn
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Patent number: 7003986Abstract: Electrical resistant bushings and methods for making fibers such as glass fibers by passing molten glass through these bushings to form fibers wherein the bushings have novel ears for attaching to electrical terminal clamps bringing electrical current to the bushing are disclosed. The novel ears have at least one generally V shaped notch at or near the unattached end of the ear to produce an improved temperature profile on the tip plate of the bushing. One preferred bushing of the invention has ears having 5 generally V shaped notches therein.Type: GrantFiled: March 6, 2002Date of Patent: February 28, 2006Assignee: Johns Manville International, Inc.Inventor: Terry Joe Hanna
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Publication number: 20030205067Abstract: A bushing for fiberizing molten material, such as molten glass, having a screen mounted in the bushing spaced above the tip or orifice plate with a central portion of the screen having a significantly lower percent of hole area than the percent of hole area in end portions of the screen. This bushing improves fiberizing efficiency in channel positions of a fiberizing operation. Also, such a screen can be laid on top of a conventional screen to convert a normal bushing to a channel position bushing. Methods of using these types of bushings to improve fiberization in the channel positions and for modifying conventional bushings for other uses are also disclosed.Type: ApplicationFiled: April 23, 2003Publication date: November 6, 2003Applicant: Johns Manville International, Inc.Inventor: Russell Donovan Arterburn
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Patent number: 6272887Abstract: A bushing tip plate support assembly for a bushing in a filament forming apparatus is disclosed. The support assembly improves the flatness of the tip section within the spans between the external support and the center support. The filament forming apparatus includes a bushing having a bottom plate from which nozzles or tips depend. The disclosed support assembly is an improvement on the internal support assemblies in conventional bushings because it has several functions. The support assembly includes two vertical dividers mounted in the bushing. The bottom ends of the dividers are welded to the tops of tip plate gussets in the bushing. The dividers are attached to side plates of the bushing as well. An upper portion of each divider serves as an upper side wall for the bushing and defines part of the throat of the bushing into which the molten glass flows. The dividers also include middle and lower portions with perforations through which the glass in the bushing may flow.Type: GrantFiled: July 6, 1999Date of Patent: August 14, 2001Assignee: Owens Corning Fiberglas Technology, Inc.Inventors: Timothy Arthur Sullivan, Jack Leonard Emerson, William LaVerle Streicher, Kevin Dewayne Smith, Bruno Andre Purnode, Kenny Alan Brown
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Patent number: 5935289Abstract: Apparatus and methods of using the apparatus to automate a labor intensive portion of the process of making continuous fiber products, like chopped glass fiber. In this process many fiberizers are used, each fiberizer forming as many as several thousand fibers. Fibers break frequently requiring the fiberizers to be restarted and this has always been a labor intensive part of the process. Apparatus for getting the fiberizers ready to restart quickly and for forming a fiber strand, apparatus for gripping the strand, breaking it and transporting it to strand pulling and processing equipment and apparatus for moving a newly started strand into a desired position on an optional strand separating and guiding means, and methods of using the apparatus are disclosed.Type: GrantFiled: October 27, 1997Date of Patent: August 10, 1999Assignee: Johns Manville International, Inc.Inventors: Russell D. Arterburn, Larry Edward Howard