Abstract: In one example, the voids 208 comprise one or more gas (e.g., air) bubbles in the solid material 206. In another example, the voids 208 comprise a structure that preserves a space in the solid material 206. In a further example, the voids 208 comprise hollow elastomeric bubbles, for example, hollow elastomeric microspheres. The hollow elastomeric microspheres comprise microballoons with tin walls that encapsulate a gas to allow for easy compression. For example, the walls of the hollow elastomeric microspheres are strong enough to avoid breakage under pressure, but thin enough to easily compress. In a further example, once cured in the solid material 206, the hollow elastomeric microspheres comprise substantially similar compressibility characteristics as gas bubbles. The voids 208 in one example are added to a resin of the solid material 206 in a substantially uniform distribution. For example, the hollow elastomeric microspheres are stirred into the resin of the solid material 206.

Abstract: A textile tube on which yarn is wound to form a pack comprises a body having a tubular body extending between opposed ends and an outer surface. At least one recessed score is defined proximate at least one end of the tube body. The recessed score has a substantially rectangular shape wherein the width of the recessed score is at least about five times the depth of the recessed score. As such, the recessed score provides more surface area for capturing yarn during a winding procedure. The recessed score also retains a substantially constant shape regardless of the moisture content of the tube, which is particularly advantageous when the tube body is formed of paperboard or other hygroscopic material. Methods of reconditioning the surface of the recessed score in order to improve the tube lifespan are also provided.

Abstract: Bobbin wound coated monofilament tapes where the coating comprises between 20% and 120% by weight of said tape, and the process for bobbin winding coated monofilament dental tapes comprising combining a coating conditioning means with means for winding at substantially constant tensions to produce controlled tension bobbins that do not unwind, that dispense uniformly free from back lashing, and that are substantially free from coating displacement and winding displacement when exposed to high temperatures and high relative humidity and that have tack values from between about 0.1 and about 0.5 grams.

Abstract: A textile tube on which yarn is wound to form a pack comprises a body having a tubular body extending between opposed ends and an outer surface. At least one recessed score is defined proximate at least one end of the tube body. The recessed score has a substantially rectangular shape wherein the width of the recessed score is at least about five times the depth of the recessed score. As such, the recessed score provides more surface area for capturing yarn during a winding procedure. The recessed score also retains a substantially constant shape regardless of the moisture content of the tube, which is particularly advantageous when the tube body is formed of paperboard or other hygroscopic material. Methods of reconditioning the surface of the recessed score in order to improve the tube lifespan are also provided.

Abstract: A storage device for data transmission lines, which serve for data transmission between a moving object and a base station, has a spool unit (2) on which a data transmission line (1) is wound in the form of a package of several layers (21) of windings. The windings in each layer are introduced at a maximum tensile stress or force, which is dependent on the modulus of elasticity of thedata transmission line (1). In this way, a creep or flow of the material of data transmission line (1), which is due to the pressure that is produced on the individual layers (21), is reduced or avoided, and a stable ordering of the windings is assured over a long period of time. The pressure of a winding on the layer (21) lying thereunder is less than 0.6 N/mm2, at least in the lower region of the windings. The maximum tensile stress is calculated from the diameters of data transmission line (1) and spool unit (2), the modulus of elasticity of data transmission line (1) and the total number N of layers (21) of the package.

Abstract: A textile tube on which yarn is wound to form a pack comprises a body having a tubular body extending between opposed ends and an outer surface. At least one recessed score is defined proximate at least one end of the tube body. The recessed score has a substantially rectangular shape wherein the width of the recessed score is at least about five times the depth of the recessed score. As such, the recessed score provides more surface area for capturing yarn during a winding procedure. The recessed score also retains a substantially constant shape regardless of the moisture content of the tube, which is particularly advantageous when the tube body is formed of paperboard or other hygroscopic material. Methods of reconditioning the surface of the recessed score in order to improve the tube lifespan are also provided.

Abstract: A textile tube on which yarn is wound to form a pack comprises a body having a tubular body extending between opposed ends and an outer surface. At least one recessed score is defined proximate at least one end of the tube body. The recessed score has a substantially rectangular shape wherein the width of the recessed score is at least about five time the depth of the recessed score. As such, the recessed score provides more surface area for capturing yarn during a winding procedure. The recessed score also retains a substantially constant shape regardless of the moisture content of the tube, which is particularly advantageous when the tube body is formed of paperboard or other hygroscopic material.

Abstract: A coil of tubing can have either adjacent tubes or tubes with a space therebetween. To hold the tubes in place a material such as an adhesive can be placed across the top of the coil, on the bottom of the coil or both to hold the coil in place. The material can also envelope the coils such that the coils are banded. The coils may have a length of a straight portion of tubing prior to the coil beginning and an angled portion on the inside diameter for inserting or extracting a product in the tubing which may be similarly retained. The tubing may be coiled by insertion between two templates. The templates have injection ports for inserting material to hold or encase the tubing. Thus the tubing may be inserted in the templates, a material to hold the tubing in the coiled position inserted and the coiled tubing removed from the templates ready for use in their coiled position with the material on the tubing holding the tubing in the coiled position.

Abstract: A method for attaching a getter to a surface includes applying an adhesive to the surface and applying the getter to the adhesive layer so as to bond the getter to the surface.

Abstract: A magnetically detectable bobbin for a sewing machine. The apparatus includes a substantially non-metallic detectable bobbin core. The core includes a substantially non-metallic cylindrical body having a detectable dopant in the cylindrical body. In the preferred embodiment, the dopant is magnetite. The thread supply is wound about the bobbin core after a frictional outer surface is applied to the bobbin core to aid in windability of the thread supply.

Abstract: A roll splicing system and method is used to splice a new roll to an expiring roll of material. Each roll includes an adhesive region disposed proximate a trailing end of the strip of material rolled around a core region of the roll. As an expiring roll expires or unrolls, the adhesive region is exposed and adheres to an adhesive adherable region on the leading end of a new roll that is rotating against the expiring roll in an opposing direction. The leading end of the new roll is thereby effectively spliced to the trailing end of the expiring roll. A trailing non-adherable region is disposed opposite the adhesive region so that the trailing non-adherable region contacts the adhesive region when rolled and prevents the strip of material from sticking to the adhesive region. The roll splicing system and method can be used to splice strips of material having adherable surfaces on both sides or having a non-adherable surface, such as a silicone coating, on one side of the strip of material.

Abstract: Reduction of the surface friction of a cured elastomer, sealant or adhesive s accomplished through the use of a dry lubricant such as hexagonal boron nitride powder either as an additive to the uncured polymer mix or applied to the uncured polymer surface prior to effecting a cure.

Abstract: A coil form with a coil support and with a winding applied thereto, whose turns are provided with a coil bond material. The bond material contains a volatile solvent and mutually fixes the turns when dried (in a dry state). To guarantee an essentially uniform, nearly solvent residue-free drying of the coil bond in the entire winding even in the case of a very large number of coil layers, the coil support is a porous coil support having open pores. The coil support has a diffusion coefficient with respect to the solvent that is equal to or slightly lower than that of the winding.

Abstract: This invention relates to marking the yarn end of a package, which is wound at the end of a winding cycle over a narrow axial range of the package surface in the form of a yarn bead. For purposes of marking the yarn end (105) of the package (103), a marking strip (126) is used, over which the yarn (105) is wound. A winding mandrel (107) engages into the space between a yarn suction device (106) and the circumferential surface of the package, and is rotated oppositely to the direction of unwinding (112) of the package (103), thereby forming a yarn loop (110) with more than one winding. Inserted axially into the space between winding mandrel (107) and the circumferential surface of the package is the marking strip (126), over which the yarn is wound several times by reversing the rotation of the winding mandrel (107). The excessive yarn (105) of the yarn loop (110) is sucked into the yarn suction device (106), and subsequently the yarn end (105) is cut.

Abstract: An optical fiber pack (42) having layers (52) of optical fiber (22) is formed on a bobbin (32) using an ultravlolet-curable adhesive. A layer (50) of a UV-curable adhesive is deposited, and a length of the optical fiber (52) is wound over the layer (50) of ultraviolet-curable adhesive. Ultraviolet radiation is directed at the layer (50) of ultraviolet-curable adhesive through the layer (52) of optical fiber wound over the layer (50) of adhesive, to cure the adhesive. The approach can be used, for example, to apply adhesive to entire layers of the optical fiber, or to tack the ends of the optical fiber layers into place.

Abstract: A device, preferably of disc configuration, capable of being fastened to a bobbin-less coil of thread for indicating the non-rotation of the coil during a sewing operation. One side of the device includes indicating means enabling the optical detection of the rotation of the device. The opposite side of the device includes fastening means, such as pins or adhesive, for fastening the device to a coil of thread, the fastening means being capable of disengaging from the coil when a predetermined length of thread remains therein.

Abstract: An apparatus for winding a coil pack of a fiber such as an optical fiber winds the fiber as a radial coil, and then joins the coil axially to previously wound coils. Each radial coil is wound on a flexible flange that is deformable from a first tapered shape which facilitates the winding against the flange, to a second shape wherein the coil wound thereon conforms to the shape of the last coil affixed to the fiber pack. The flexible flange is preferably made of an elastomer, and its shape change is readily accomplished by an articulated series of nesting cylinders. The apparatus further includes a fiber winding head that winds the fiber onto the flexible flange, and an adhesive applicator head that applies adhesive between succeeding coils of fiber as they are joined to the coil pack.

Abstract: A sensor coil for a fiber optic gyroscope is potted in polymer-based material selected for avoiding such temperature-related anomalies as bias spikes and bias crossings. The potting material is based upon a silicone composition characterized by a glass transition temperature that lies below and outside the operational range required for commercial or military operation. Predetermined fillers may be added to the silicone for bolstering stiffness (Young's modulus) within the polymer's rubbery region to reduce the gyro's bias sensitivity to vibration. Excellent bias thermal and vibration performance has been achieved with coils potted in silicone adhesive with a carbon-black filler.

Abstract: A coil of hollow tubing is bonded onto itself to retain the integrity of the coil by depositing a bead or stream of adhesive onto the exterior of the tubing along the extent thereof. By coiling the tubing the adhesive comes into contact with itself to removably bond the coil together. In use, any desired section of the coil is "peeled" from the remainder of the coil. The present invention is particularly advantageous in use with drain tile.

Abstract: A method of making an optical scanner is disclosed that includes light transmitting and receiving optical fibers to illuminate and scan an image to be copied, transmitted or stored.

Abstract: In-line application of liquid adhesive to an optical fiber (10) while it is being wound onto a drum (14) is accomplished by a tube (58) interconnected with a pressurized adhesive source of supply (70). An end (60) of the tube provides adhesive in a beadlike strip which wets the drum or underlying winding layer just under the fiber lower surface before it is laid down onto the drum.

Abstract: A continuous filament (40) from a supply spool (50) is wound onto a takeup spool (52) in an amount to form one flat coil (54). A first winding device (42) forms a first flat coil (54) in winding space (36) between guides (28 and 30) while simultaneously a second winding device (44) winds a second flat coil in winding space (38) between guides (30 and 32) from the filament on the takeup spool (52). On completion of the flat coil winding, the guide (32), second winding device (44) and takeup spool (52) are removed from the shaft assembly (34), adhesive is applied to the newly formed flat coils and the coils along with guides (28,30) are moved onto spindle (90) and against a flange (92). The guides (28,30) are removed from the shaft assembly (34) adjacent the newly wound coils stored against the flange (92) and remounted next to the winding device (42).

Abstract: A method for preparing an optical fiber canister includes providing a length of a wire (44) having a diameter of about that of the optical fiber (60), and winding the wire (44) onto a mandrel (40) in a preselected winding pattern to form a base layer (46). A replicating strip (48) having a flexible substrate (50) with a patterning layer (52) of b-staged epoxy on one side thereof is provided, and the patterning layer (52) is pressed against the base layer (46) to form a groove pattern (62) in the patterning layer (52). The b-staged epoxy layer (52) is cured to harden it to preserve the groove pattern, and then the flexible substrate (50) is applied to an optical fiber bobbin (56) with the grooved patterning layer (52) facing outwardly. An optical fiber (60) is wound into the groove (62) of the patterning layer (52) to form an optical fiber pack (66).

Abstract: An optical fiber package (52) includes a length of optical fiber (22) wound in a plurality of convolutions on a bobbin (50). In order to maintain the convolutions in a precision wound package and to prevent snags during payout, it is necessary that each convolution of optical fiber be adhered to at least a portion of an adjacent convolution. This is accomplished by providing the length of optical fiber with an adhesive material (32) which is not tacky at room temperature but which becomes tacky at a predetermined temperature. After the convolutions have been wound on the bobbin, the bobbin is treated to cause the adhesive material to become tacky and cause each convolution to adhere to at least a portion of adjacent convolutions. Suitable adhesion is caused to occur with any adhesive material for which molecular bonding can occur across the interface between contiguous portions of adjacent convolutions as a result of suitable treatment.

Abstract: Disclosed is a method and a fiber optic adhesive which composition is appd to a fiber optic having a buffer coat thereon and is, subsequently, partially cured to a tacky outer surface while being wound onto a bobbin from which the adhesively coated fiber optic material is to payout during use. The adhesively coated fiber optic material must be cured to a tacky cure while being wound onto a bobbin. The cured adhesive composition functions to hold the fiber optic material in place on the bobbin during storage and allows consistent payout during use of the fiber optic material. The typical composition of the fiber optic adhesive comprises hydroxyterminated polybutadiene from about 88.14 to about 92.48 percent by weight, isophorone diisocyanate from about 6.23 to about 6.42 percent by weight, a catalyst of ferric acetylacetonate of dibutyltin dilaurate in an amount from about 0.89 to about 1.15 percent by weight respectively, and a thixotropic agent in an amount of about 4.48 by weight.

Abstract: An optical fiber (12) is removably held in place on a payout bobbin (14) using an adhesive. The adhesive is applied directly to the optical fiber (12) by passing the optical fiber (12) through a pressure-less die applicator (28) that applies a uniform thin layer of adhesive to the optical fiber (12), prior to winding onto the bobbin (14). Winding preferably proceeds continuously within layers, and from layer to layer.

Abstract: An optical fiber payout canister (22) comprises a bobbin (30) having a dispensing end and an optical fiber pack having a plurality of optical fiber layers (34, 36) wound upon the bobbin (30). The pack has a transition winding pattern between the optical fiber layers (34, 36) at the dispensing end thereof, and an overcoat adhesive layer overlies the transition winding pattern of the optical fiber pack. The adhesive layer desirably comprises from about 80 to about 72 parts by weight of a precatalyzed organofunctional siloxane polymer and from about 20 to about 28 parts by weight of a silicone elastoplastic resin. The adhesive layer desirably has a tensile strength of from about 25 to about 40 psi, and a modulus of elasticity of from about 1200 to about 1600 psi, over a temperature range of from about -50.degree. C. to about +80.degree. C.

Abstract: According to the invention, a method and system of injecting material into a wound filament items such as a fiber optic canister is provided. The method is useful with a canister which, when dry wound, has at least one channel formed therein.In one aspect, the method includes the step of injecting adhesive into the channel to impregnate the canister with adhesive. In another aspect, the method includes the additional step of discharging adhesive from a second channel to remove excess adhesive from the canister. The method may also include the step of circulating air through the two channels to purge excess adhesive and solvent.

Abstract: An optical fiber package (20) is provided by winding a plurality of convolutions in a plurality of layers on a bobbin. To each layer is applied an adhesive material (45) which in a preferred embodiment is a mixture comprising a reactive silicone copolymer resin, a solvent system which includes an aromatic constituent, a catalyst and a wetting agent. The mixture has a modulus behavior which is relatively stable with respect to time throughout a relatively wide operating temperature. Inasmuch as the solvent system and the method of application of the mixture are effective to control the rate of precipitation and the rate of cure of the silicone constituent, the surface roughness of the convolutions is controlled. After the desired number of convolutions have been wound, the package is subjected to a heat treatment which relieves stresses in the wound fiber and which completes the cure of the adhesive material.

Abstract: An optical fiber is joined, preferably with an ultraviolet curable adhesive, to a strip of a flexible support material such as a plastic tape to form an optical fiber assembly. The assembly is wound onto a bobbin to form an optical fiber canister, which is then paid out upon demand. The optical fiber assembly requires little or no adhesive to hold it in place on the bobbin, as the support material of each turn aids in holding the adjacent turns in place, with the result that the bend radius during payout is increased.

Abstract: A coiled rope providing a securely coiled rope structure which, when forcefully uncoiled, gives rapid yet controlled deployment of the rope, and a method of so coiling the rope. The rope is wound about a central core member in sequential, adjacent, planar circular layers of approximately similar diameter, each layer consisting of a plurality of coils of rope of increasing size commencing from the central core member. Adjacent coils of rope in each layer and adjacent layers of rope are releasably adhered to each other by contact cement so that the rope will remain securely coiled in storage or until required for use, and then permit rapid yet controlled uncoiling of the rope. Such a coiled rope is useful in providing controlled pay out of rope, for example, between life rafts being air dropped to survivors in the sea, the rope being payed out sequentially coil by coil and layer by layer.

Abstract: A cable or other linear length of flexible material, such as high strength wire, is initially wound on a reel, and is unwound by the application of a force, typically a movable object moving downwards through the air under the influence of gravity. The motion of the cable in unwinding from the reel is effectively braked, or slowed, by providing a cable brake system or systems which generate resistance to the unwinding of the cable. One system entails the provision of frictional control means consisting of a soft, tough, material matrix disposed about the reel, so that the cable is imbedded in the matrix. Payout of the cable, as the reel revolves, requires the cable to be torn out of the matrix. The other system entails immersing the reel, and associated cable wound on the reel, in a viscous fluid, so that the unwinding of the cable from the reel causes the reel to turn about its axis in the viscous fluid, thereby producing resistance to motion and a braking action.

Abstract: During the winding of the layers of the wires of a tire bead ring, a piece of ribbon is interposed at least twice per revolution between two consecutive layers of wires, the ribbon being formed of a thin flexible support bearing on each of its faces a layer of a material which adheres both to the support and to the wires.