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Class 373/28 - Filament discharge (i.e., bushing)


Subclass of Class 373 - Industrial electric heating furnaces
Definition: Subject matter wherein the glass is melting in a bushing from which the molten
No. of patents: 34
Last issue date: 02/28/2006


NumberTitleIssue Date
7003986Fiberizing bushings and methods of using
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...
02/28/2006
6813909Reinforcement member for a bushing tip plate and related method
A plurality of different structural members for reinforcing a plate-like structure, such as a bushing tip plate for intended use in forming fibers from a fluid material supplied to a bushing assembly, are disclosed. Each reinforcing member includes a body having a f...
11/09/2004
6779366Bushing assembly/support structure arrangement
A bushing assembly/support structure arrangement is provided. The arrangement comprises a bushing assembly and a support structure. The bushing arrangement includes a bushing main body comprising at least first and second side walls and a tip plate extending between...
08/24/2004
6272887Bushing tip plate support assembly for a bushing in a filament forming apparatus
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 appar...
08/14/2001
6178777Side-discharge melter for use in the manufacture of fiberglass, and corresponding method
An electric open-top melter for use in the manufacture of mineral fibers, such as fiberglass, is provided with a side-discharge outlet. The side-discharge outlet allows the melter, conditioner/refiner, and forehearth to all be located on substantially the...
01/30/2001
5659564Method and apparatus for maintaining a furnace stack
The bottoms of exhaust stacks and systems on glass melting furnaces usually collect slag that is produced by volatiles in the exhaust gases condensing out and forming a glassy substance on the cooler walls of the stacks, etc. which then runs down the wall...
08/19/1997
5338329Process and device for obtaining mineral fibers
For obtaining mineral fibers from a thermoplastic material having a high melting point, and more precisely for the regulation of the flow rate and temperature of the stream of molten material distributed on the fiber-drawing machine, the molten material i...
08/16/1994
5134627Batch charger for glass furnace
A batch charger for feeding raw batch material to a glass making furnace of the type having a reciprocating charger plate positioned under a hopper chute. A pusher bar is supported substantially parallel to the front edge of the charger plate, and rams ar...
07/28/1992
5075076Novel palladium-based alloys containing tin and their use in the glass industry
The invention relates to a novel palladium-based alloy. This palladium-based alloy comprises tin in an amount, preferably of 5 to 20% by weight, which is sufficient to impart an acceptable resistance to corrosion by molten glass, preferably being essentially e...
12/24/1991
5071459Bushing balance controller for multiple segment bushings
A bushing balance controller controls the overall average temperature of a multiple segment glass fiber forming bushing and the temperature of each individual bushing segment. Current shunting loops divert current away from each bushing segment as require...
12/10/1991
5051235Novel palladium-based alloys containing indium bismuth, silver and copper
The invention relates to a novel palladium-based alloy. This palladium-based alloy comprises at least one additional element selected from indium, bismuth, silver and copper, in an amount sufficient to impart an acceptable resistance to corrosion by molten gla...
09/24/1991
4931075High current multiterminal bushing controller
An improved bushing controller is shown which utilizes an auxiliary transformer in each of the variable impedance circuits in the controller and the bushing tha the controller is connected to increase the current capability of the controller by a signific...
06/05/1990
4812372Refractory metal substrate and coatings therefor
A refractory metal substrate suitable for use in contact with an oxygen- or nitrogen-containing environment at a temperature greater than the oxidation or mitridation acceleration temperature of the substrate is disclosed. The refractory metal substrate c...
03/14/1989
4794625Method and apparatus for contolling temperature in a fiber glass forming bushing
A control system for a fiber glass forming bushing is described in which two thermocouple circuits are connected to a transformer having two sets of windings on a common core in series aiding configuration. A third thermocouple circuit is connected to the...
12/27/1988
4780120Bushing balance controller and method of using same
A bushing balance controller senses the temperature of each section of a multiple section glass fiber forming bushing by thermocouples or resistance (voltage drop) measuring techniques and injects electrical energy to all but one of the individual bushing...
10/25/1988
4657572Bushing balance controller and method for using same
The bushing balance controller is an electronic device which measures the voltage drop across each segment of a multiple segment glass fiber forming bushing and measures the current flow in the bushing. The device uses these measurements to produce error ...
04/14/1987
4594087Three-terminal controller for fiber glass bushing
A bushing controller circuit for regulating the current flow through a fiber glass bushing to thereby control the temperature of the molten glass being drawn into fibers is disclosed. The bushing temperature is measured by a plurality of thermocouples whi...
06/10/1986
4591371Glass fiber forming bushing construction
A flat plate bushing is described which eliminates extensive precious metal use in drain and/or production bushings. The bushing utilizes a novel arrangement of insulation members and support plates that allow the bushing to be electrically heated and a n...
05/27/1986
4546485Method and apparatus for producing uniform strands from a split fiber glass bushing
A method of equalizing production on a split fiber glass forming bushing is described involving averaging the temperature measured across a bushing face plate, and controlling the power input to the bushing in response to that measured average. The two ha...
10/08/1985
4438518Method for protecting forming bushings
A process for forming molten material in a melting furnace is disclosed. Bushings made of refractory or noble metal in the furnace are protected from cracking by applying a positive or anodic D.C. bias....
03/20/1984
4285711Method and apparatus for the production of glass fibres
Apparatus for producing glass fibres by flowing a plurality of streams of molten glass through an electrically-heated bushing comprising a metal plate having a plurality of orifices therein, together with means for flowing an electric current through said...
08/25/1981
4272271Apparatus for production of mineral fibers
The present invention embraces apparatus for the production of mineral fibers. An electrically heated bushing for the maufacture of glass fiber comprises an electrically conductive bottom wall having orifices for the passage of streams of molten glass the...
06/09/1981
4262158Paramelter-batch feed controlled by crust temperature and melter power by liner temperature for regulation of head
The hydraulic head of a cold top electric furnace for melting of batch, such as glass batch, employing an electric resistance heater, is electrically controlled by sensed temperature. The temperature is measured below the batch layer or crust at the area ...
04/14/1981
4231773Fibrous glass manufacture using refractory bushing
There is disclosed a glass feeder, or bushing, for forming fibrous glass products with the bushing being fabricated of chromic oxide which has been doped with an electrical conductivity enhancing amount of a dopant....
11/04/1980
4185980Manufacturing glass with improved silicon carbide bushing operation
An improvement is provided in apparatus of the type which comprises a glass feeder adapted to discharge a stream of glass, the feeder including a terminal or tab on each of opposed side wall portions and means are provided, including electrical connectors...
01/29/1980
4155731Fiber forming bushing construction
In apparatus for heat-softening and attenuating glass material into fibers, an improved low temperature electrical resistance bushing having extremely thin side walls and other electricity conducting components running from end to end in the bushing, rela...
05/22/1979
4149865Apparatus and method for the drawing of glass fiber
An apparatus and method for use with a bushing assembly of the type wherein glass fibers are drawn through an orifice plate having a flat undersurface against which bulk gas is directed to effect cooling and fiber attentuation. A selectively adjustable bu...
04/17/1979
4146375Method for the continuous production of glass fiber strand
Method and apparatus for forming glass fiber strand directly and continuously from raw batch glass-forming material, which includes means for continuously electrically melting raw batch, glass-forming materials, forehearth and fiber forming means for cont...
03/27/1979
4146373Bushing construction
Improved construction for bushings used to produce glass fibers is provided. Such bushings commonly have thin side and end walls of precious metal defining a glass-melting chamber, with a bottom in which fiber-forming tips are located. Refractory material...
03/27/1979
4043778Electric resistance bushing for melting inorganic materials
The present invention involves an electrical resistance heated bushing for melting inorganic materials, particularly glass, and for exuding molten material through a plurality of orifices in the bushing to form fibers suitable for coating with metal in co...
08/23/1977
4026689Apparatus for making glass fibers
A feeder for delivering streams of molten mineral material for attenuation into filaments having an electrically conductive bottom wall with orifices formed therein. The molten material in the feeder passes through the orifices and is delivered as streams...
05/31/1977
4024336Split bushing control
A circuit is described for controlling the temperature of a heating element used to heat molten glass in a bushing from which the molten glass is drawn into glass fibers and in which the bushing is divided into two sections. The circuit includes two tempe...
05/17/1977
4003730Apparatus for making glass fibers
A heating unit for converting batch mineral material to molten glass is disclosed. The unit includes a receptacle for the flowable material, heating elements for supplying heat to the flowable material, and movably mounted bus bars for supplying electrica...
01/18/1977
3972702Method and apparatus for producing fibers from heat-softenable materials
A stream feeder for supply of streams of molten glass for attenuaton into fibers. The feeder is formed of metal and is electric-resistance heated. The bottom wall and sidewalls of the feeder are of varied thickness and are formed from a single sheet of me...
08/03/1976
 
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