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| Number | Title | Issue Date |
| 5302175 | Method of winding glass fibers A method of preparing glass fiber strands is shown wherein the glass fibers as they are drawn from the glass fiber forming bushing are wound in a unique way. The fibers are drawn from the bushings using high speed, low energy drawing devices such as capst... | 04/12/1994 |
| 4931075 | High 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 |
| 4925474 | Method and apparatus for on-line LOI measurement of fibers A method and apparatus constructed to measure the fluid present in a multifilament or fiber strand moving at high speed is described and involves conductive contact points along the strand path which contact the strand and generate signals. The signals wh... | 05/15/1990 |
| 4923731 | Novel preform screens and preform product A novel preform screen for use in producing preforms for structural liquid composite molding is described. The screen has a raised edge provided around the screen to catch fibers as they are directed toward the screen surface during production of a prefor... | 05/08/1990 |
| 4824457 | Method and apparatus for controlling thermal environment in a glass fiber forming process A method and apparatus for controlling a glass fiber forming environment is disclosed. A fin cooler having a plurality of hollow cooling fins, each provided with a coolant liquid flow passage and further having a header block provided with separate coolan... | 04/25/1989 |
| 4802843 | Method of preparing sheets of fiber reinforced thermoplastic resin or subsequent molding in a press A method and apparatus for heating fibers reinforced thermoplastic sheets is disclosed. The apparatus involves use of gas heating ovens adapted to allow several layers of material to be heated continuously, with the conveyors stacked are above the other. ... | 02/07/1989 |
| 4794625 | Method 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 |
| 4793802 | Circulating gas oven for heating fiber reinforced thermoplastic resin sheets A method and apparatus for heating fibers reinforced thermoplastic sheets is disclosed. The apparatus involves use of gas heating ovens adapted to allow several layers of material to be heated continuously, with the conveyors stacked are above the other. ... | 12/27/1988 |
| 4767321 | Oven for heating and stacking thermoplastic fiber reinforced resin sheets A method and apparatus for heating fibers reinforced thermoplastic sheets is disclosed. The apparatus involves use of gas heating ovens adapted to allow several layers of material to be heated continuously, with the conveyors stacked are above the other. ... | 08/30/1988 |
| 4758259 | Hollow glass fiber bushing, method of making hollow fibers and the hollow glass fibers made by that method A method and apparatus for producing hollow glass fibers is described in which the glass from a bushing tip and the gas used to provide a lumen in fibers as they are drawn from the tip are fed from passages in the tip sized to provide desired inside to ou... | 07/19/1988 |
| 4752513 | Reinforcements for pultruding resin reinforced products and novel pultruded products Novel resin reinforcing composite mats of continuous strands are described for use in pultrusion processes. The pultruded parts are characterized by having a reinforcement of mats and rovings with the reinforcing mats and rovings being distributed through... | 06/21/1988 |
| 4746344 | Fiber forming bushing and method for providing A fiber glass bushing having a thermocouple embedded in the bottom thereof and a method of preparing the same is described. The thermocouple is carried in a plate member which is welded to the bushing bottom by a weld on the outside of the busing.... | 05/24/1988 |
| 4742673 | Method of testing twister ring warp and apparatus therefor An apparatus and method for measuring twister ring warp on a twister frame are described. The apparatus involves a levelling device having flat contact points which engage the twister ring on the frame, and when all contact points are touching, the ring i... | 05/10/1988 |
| 4743749 | Self compensating circuit for measuring rapidly occurring optoelectronically detectable events A circuit is described which can be used to record rapidly occurring faults in a slowly reacting circuit which is self compensating so that the photoelectric light emitters used in the circuit have their flux maintained constant.... | 05/10/1988 |
| 4738701 | Method and apparatus for forming glass fibers A glass fiber forming assembly is described which permits rapid change of a production fiber glass bushing. The system includes a secondary bushing and means to heat it as well as a glass delivery bushing permanently connected to a forehearth. The product... | 04/19/1988 |
| 4738700 | Method and apparatus for controlling temperature in a fiber glass forming bushing An apparatus for more accurately measuring the temperature of a fiber glass forming bushing is described which includes the placing of sidewall and bottom thermocouples in locations on the bushing so that electrical signals representing noise are eliminat... | 04/19/1988 |
| 4735642 | Hollow glass fiber bushing assembly A fiber glass bushing is described which produces hollow glass fibers from a multiplicity of tips having air tubes centered inside of them. Modules for providing a common header for rows of tubes centered in rows of tips on the bushing bottom are shown al... | 04/05/1988 |
| 4715105 | Method of preparation of packed fiber glass reaction vessel A packed tube of generally parallel aligned fibers is described, wherein the fibers are packed therein at densities of 60 to 100 percent of the theoretical packing density based on the fiber diameters used based on the selected fiber pitch pattern and pre... | 12/29/1987 |
| 4704150 | Glass fiber forming bushing assembly A bushing assembly is described which involves two fiber glass bushings, one being a production bushing and the other a permanent bushing attached to a fiber glass forehearth. Restricted flow channels are provided in the upper bushing to flow small quanti... | 11/03/1987 |
| 4704149 | Hollow fiber bushing tip A bushing tip suitable for producing hollow fibers is described which is formed from a centrally disposed gas tube preferably integral with the walls of the tip and constructed such that a gas passage is provided through the tip with at least one glass de... | 11/03/1987 |
| 4698082 | Hollow fiber bushing and hollow fiber tip construction A bushing support system for anchoring hollow fiber forming tips in a fiber glass bushing is described. The truss like support for the air tubes and bushing tips insure minimal movement of the tips during bushing operation and that any movement is accompa... | 10/06/1987 |
| 4692375 | Thermoplastic sheet An oriented continuous strand mat of glass fiber filaments is formed by interleaved layers of generally circular or random loops and elongated elliptical loops having their longitudinal axes positioned in the direction of travel of an endless conveyor upo... | 09/08/1987 |
| 4690760 | Novel cartridge with stress relieving member A fluid separation device in the form of a cartridge is shown in which there is provided a fluid inlet to the cartridge, a distribution tube to feed fluid from the center of the cartridge outwardly across alternate layers of permeable membranes and glass ... | 09/01/1987 |
| 4689255 | Mat structure A novel mat composite is shown in which a plurality of glass fibers, strands or rovings are carried on a fluid permeable sheet with two generally parallel ribbons of mastic on each side of the sheet inboard of the edges affixing the fibers, strands or rov... | 08/25/1987 |
| 4657742 | Packed fiber glass reaction vessel A packed tube of generally parallel aligned fibers is described, wherein the fibers are packed therein at densities of 60 to 100 percent of the theoretical packing density based on the fiber diameters used based on the selected fiber pitch pattern and pre... | 04/14/1987 |
| 4615717 | Method and apparatus for making glass fiber oriented continuous strand mat An oriented continuous strand mat of glass fiber filaments is formed by interleaved layers of generally circular or random loops and elongated elliptical loops having their longitudinal axes positioned in the direction of travel of an endless conveyor upo... | 10/07/1986 |
| 4610707 | Broken filament detector and system therefor Detector circuitry and a system for detecting and/or counting transient events such as the passage of broken filament ends in an article such as a fiber glass strand, and for thereby determining the quality of the article being measured, is disclosed. Opt... | 09/09/1986 |
| 4610789 | Filtration cartridge and reactor A filter cartridge is structured of a filtration mat assembly wrapped or rolled about a central distribution tube. The filtration mat includes a plurality of hollow porous fiber strands carried by a fluid permeable sheet. Once the mat has been wrapped abo... | 09/09/1986 |
| 4600165 | Textile bobbin A textile bobbin is disclosed having double flanges and a strand collection zone between the flanges. The barrel of the bobbin is internally reinforced with longitudinal ribs, the upper flange is completely enclosed and the barrel and flanges are sized to... | 07/15/1986 |
| 4596366 | Textile bobbin A textile bobbin for winding glass fiber strand is shown which contains a mottled surface over part or all of its surface and has a slightly raised, generally equally spaced ribs on its surface between the bobbin flange and the top. In one embodiment, the... | 06/24/1986 |
| 4594087 | Three-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 |
| 4591371 | Glass 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 |
| 4589898 | Method of cleaning heat transfer fins A method of cleaning glass volatile contaminants from the surfaces of heat transfer fins in a fin cooler of a glass fiber forming bushing assembly is disclosed. A cleaning liquid which is a dilute alcohol solution in which the alcohol is selected from the... | 05/20/1986 |
| 4566890 | Self purging fin cooler A self purging fin cooler for use with a glass fiber forming bushing assembly is disclosed. A fin cooler header block is provided with a flow channel for coolant flow and a separate flow channel for cleaning liquid flow. A plurality of cleaning liquid dis... | 01/28/1986 |
| 4566891 | Fin cooler clamp A fin cooler clamp useable to quickly release and attach a fin cooler to a bushing frame is disclosed. A fin support bracket having a downwardly acing U-shaped channel is attachable to the bushing frame. A fin adjusting housing snap fits into the channel ... | 01/28/1986 |
| 4566888 | 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... | 01/28/1986 |
| 4546485 | Method 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 |
| 4542106 | Fiber glass composition Novel glass fibers are described which contain 58 to 60 percent SiO2, 11 to 13 percent Al2 O3, 21 to 23 percent CaO, 2 to 4 percent MgO and 1 to 5 percent TiO2. The fibers also have a seed count of 5 seeds or le... | 09/17/1985 |
| 4538773 | Apparatus for collecting strands An apparatus for producing and winding strands formed of filaments to achieve good split efficiency on removal of the plurality of strands from the package for further processing, and to produce a package of wound strands having good edges. The apparatus ... | 09/03/1985 |
| 4537609 | Stone trap and method of using for making glass fibers Fiber glass forming bushings are described which contain baffle arrangements which are positioned below the bushing flange and direct glass flows inside the bushing to trap stones in the molten glass. The baffles are arranged to divert glass entering the ... | 08/27/1985 |