Class 65/476 - By modifying fluid pressure (e.g., vacuum, reduced or superatmospheric pressure, etc.)

Subclass of Class 65 - Glass manufacturing
Definition: Processes including a step of changing or varying an existing
No. of patents: 24
Last issue date: 09/04/2007

Number	Title	Issue Date
7264422	Rotary separator for mineral fibers A method and apparatus for collecting and forming loose fill fiber material from an air stream includes introducing a combined fiber and air stream onto a surface of a rotatable drum. The rotatable drum allows the air to flow through the surface of the drum while co...	09/04/2007
7194875	Fiberizing bushing with improved screen 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 p...	03/27/2007
6758067	Methods for producing optical fiber by focusing high viscosity liquid The invention is directed to the production of optical fibers from optical fiber preforms using flow physics. The present methods provide for the “drawing” of an optical fiber preform using focusing of the preform by a surrounding fluid, e.g. a heated gas. ...	07/06/2004
6192715	Furnace for forming optical fiber An optical fiber drawing furnace capable of the prevention of entry of an ambient gas into an inner space thereof both effectively and economically, provided with a lower gas introduction portion through which inert gas is introduced into the inner space ...	02/27/2001
6189344	Method for low frequency sound distribution of rotary fiberizer veils A method and device is disclosed for distributing a veil by applying low frequency sound to at least one portion of the veil, and causing the veil to deviate in its generally downward direction of travel. In its simplest embodiment, the lapping device of ...	02/20/2001
5455991	Method and apparatus for collecting fibers, and product Disclosed are an improved apparatus for collecting fine fibers, such as glass fibers, having a mean diameter of less than two microns from a gaseous stream, a method of collecting fine fibers using the apparatus and the novel new product produced by this ...	10/10/1995
5229357	Method of producing superconducting ceramic wire and product A superconducting ceramic wire is produced by melting a superconducting ceramic-forming metal oxide composition, and quenching the melt into a glass which is then formed into a preform of thin plate. The preform is soften and wire-drawn without causing cr...	07/20/1993
4676813	Method and apparatus for forming glass fibers A feeder system for the production of glass filaments is rendered dripless or non-dripless on demand by controlling the pressure of the air in contact with the streams and beads of the orificed discharge wall. Preferably, the feeder is rendered non-driple...	06/30/1987
4675039	Method and apparatus for forming glass fibers A feeder system for the production of glass filaments is provided with a shallow layer of molten glass over the discharge wall in combination with a flow control means adapted to regulate the depth of the layer to provide dripless and non-dripless operati...	06/23/1987
4664688	Method and apparatus for forming glass fibers A feeder for the production of glass filaments is provided with a mechanical valve means to render the operation dripless or non-dripless as desired. Preferably, the feeder is rendered non-dripless when the restart of filament formation from idle orifices...	05/12/1987
4627864	Method of making glass fiber forming feeders A method of making an orificed discharge wall for supplying a plurality of streams of molten glass to be attenuated into filaments is provided comprising inserting elements in apertures in a member; positioning said elements and member within a thin walle...	12/09/1986
4624693	Method and apparatus for forming glass fibers A feeder for the production of glass filaments is provided with a mechanical valve means to render the operation dripless or non-dripless, as desired. Preferably, the feeder is rendered non-dripless when the restart of filament formation from idle orifice...	11/25/1986
4612027	Method and apparatus for forming glass fibers A feeder for the production of glass filaments is provided with dripless and non-dripless fields of stream defining orifices to, in part, have the advantages of dripless as well as non-dripless type feeders....	09/16/1986
4553994	Method for forming glass fibers The present invention proposes a novel apparatus and method for the manufacture of glass fibers utilizing a bushing confining a body of molten glass over an orifice plate which may or may not have depending tips. Interposed in the glass body is a plate or...	11/19/1985
4515610	Method of making and using glass fiber forming feeders A method of making an orificed discharge wall for supplying a plurality of streams of molten inorganic material to be attenuated into filaments comprising inserting elements in apertures in a member; sealing said elements and member within a coating adapt...	05/07/1985
4488891	Method for forming glass fibers A glass fiber attenuation apparatus and process wherein molten glass is supplied from a molten glass body to an orifice plate at substantially atmospheric pressure to prevent molten glass flow through an orifice at which attenuation has ceased, thus permi...	12/18/1984
4447248	Method of making and using glass fiber forming feeders A method of making an orificed discharge wall for supplying a plurality of streams of molten inorganic material to be attenuated into filaments comprising inserting elements in apertures in a member; sealing said elements and member within a coating adapt...	05/08/1984
4436541	Method for production of mineral fibers The present invention embraces apparatus for the production of mineral fibers. A bushing for the manufacture of mineral fibers, such as glass fibers, comprises an orificed bottom wall for the passage of streams of molten mineral material therethrough for ...	03/13/1984
4337074	Process for production of mineral wool fibers In a process for the production of mineral wool fibers according to the jet blast process, comprising issuing at least one melt stream from at least one opening in the base of a melting crucible into a converging-diverging drawing nozzle, flowing a gaseou...	06/29/1982
4266960	Method and apparatus for producing fibrous wool packs The present invention relates to the manufacture of fibrous wool by the rotary process. In the rotary process heat softenable material, such as molten glass, is supplied to a centrifuge wherefrom streams of said heat softenable material emanate and are ac...	05/12/1981
4227906	Environmental control for mineral fiber-forming A mineral fiber-forming bushing is disclosed in which sidewalls containing at least one opening extend continuously downwardly from the bushing bottom wall to define a forming chamber beneath the bushing. A fluid is directed toward the bushing bottom wall...	10/14/1980
4167404	Method and apparatus for collecting fibrous material A method and apparatus for collecting fibrous material, particularly small diameter glass fibers, i.e. within the range of 0.05 to 2.60 microns, from a gaseous medium in an efficient, environmentally sound manner is disclosed herein. The apparatus include...	09/11/1979
4140508	Method and apparatus for collecting strand formed from streams of molten material This invention relates to a method and apparatus for collecting strands formed from streams of molten material issuing from orifices in a feeder having a blower positioned to direct gas into contact with streams of molten material to attenuate the streams...	02/20/1979
3981704	Method and apparatus for processing glass This invention embraces a method of and apparatus for processing heat-softenable fiber-forming material, such as glass, involving treatment of a surface of a feeder from which flow streams of the heat-softened glass through the establishment of an environ...	09/21/1976

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Class 65/476 - By modifying fluid pressure (e.g., vacuum, reduced or superatmospheric pressure, etc.)