Abstract: The device comprises at least one module for stitching the tread and a means for moving the module vertically and horizontally. The stitching module comprises a frame which is provided with a fixed stitching assembly, equipped with spikes, and at least one mobile stitching assembly. The at least one mobile stitching assembly comprises at least one stitching plate provided at the base of same with at least one planar horizontal contact surface, from which at least two spikes protrude. The plate is arranged in a vertical guide space provided in the frame such that the spikes protrude downwards and such that it is free to move vertically in this space over a limited travel path. The device also includes a vertical movement device for moving the plate from the top downwards in this guide space and a device for locking the altitude position of the plate in this space.

Abstract: A method for partial detachment of a defined area of a conductive layer using a laser beam includes forming a conductor track with a defined path from the conductive layer on the substrate, the path defining main axes. The area is segmented into zones. A linear recess is provided along a respective perimeter of each of the zones. Each of the zones has a strip shape such that the recesses extend along paths that are substantially straight lines not parallel to either of the main axes. One of the zones to be removed is heated using laser radiation until adhesion of the conductive layer to the substrate is substantially reduced and the zone to be removed is detached in a surface-wide manner from the substrate under external influences. Laser-beam parameters are set such that only the conductive layer is removed without affecting an underlying substrate.

Abstract: The present invention relates to a hose system, in particular for vehicle tires, having a hose (12) formed into a ring, comprising polyurethane and having an at least substantially constant wall thickness along the extent thereof, wherein the substantially constant value of the wall thickness is in the range between 0.1 mm and 0.4 mm.

Abstract: The present invention relates to a hose system, in particular for vehicle tires, having a hose (12) formed into a ring, comprising polyurethane and having an at least substantially constant wall thickness along the extent thereof, wherein the substantially constant value of the wall thickness is in the range between 0.1 mm and 0.4 mm.

Abstract: An inner tube having a closed polymeric envelope with a primary surface comprising means allowing compression of the polymeric envelope when inflated under the normal conditions of use of the assembled unit. A radially outer part has a meridian curvature such that the ratio of the average radius of its meridian curvature to the radius of a circle of perimeter equal to the meridian perimeter of the primary surface of the polymeric envelope is greater than 2.5 and preferably greater than 10, when the inner tube is inflated to a pressure of 2000 pascals and the ratio of the average radius of the meridian curvature of the side parts to the radius of a circle of perimeter equal to the meridian perimeter of the primary surface of the polymeric envelope is greater than 2.5 and preferably greater than 10, when the inner tube is inflated to a pressure of 2000 pascals.

Abstract: A method and an apparatus for butt-jointing edges of an elastic material sheet is disclosed. The elastic material sheet is supported such that the two edges to be butt-jointed are oppositely opposed. By moving a pair of counterrotating conical surfaces along the edges, the surfaces of the edges portions are drawn toward the center between the two edges so that the edges are butt-jointed. Between the conical surfaces, a small space is provided so as to form a small rib-like protrusion along the butt-joint. Then, the small rib-like protrusion of the elastic material is pressed down to flatten. Therefore, at the butt-joint interface, the elastic material irregularly interfuses to increase the strength of the butt-joint.

Abstract: An inflatable coupling component tube for a fluid-operated brake or clutch includes an elongated, generally tubular-shaped structure of predetermined length having two ends and a joint between the two ends that closes the tube to form a generally toroidal-shaped cavity. A coupling component for a fluid-operated brake or clutch that includes an inflatable tube, and a method of making an inflatable coupling component tube are also disclosed.

Abstract: Retreaded tires are made using a hot extruded splice strip of either natural rubber or a high-synthetic rubber to directly adhere the ends of a precured tire tread together. The retreaded tire, which also contains an uncured cushion strip between the tire tread and a buffed carcass, is then heated to cure the tread splice as well as the tire cushion.

Abstract: A method of manufacturing a rubber component for a pneumatic tire which comprises a process of overlap-winding at least one rubber tape into a target cross sectional shape for the rubber component, wherein each rubber tape has a thickness of from 0.3 to 3.0 mm and a width of from 5 to 40 mm, and an inner surface and/or an outer surface of the rubber component are defined by a surface layer made of windings of the rubber tape which windings are overlapped by a width WJ less than 75% of the rubber tape width but more than 1.0 mm.

Abstract: To make it possible to precisely bond a tube blank having thickened portions projecting from an outer wall surface of a retention mold. A tube blank is formed of natural rubber and is provided with an air chamber peripheral wall, a sealant chamber peripheral wall and a partition. The tube blank has ends held by the retention mold which are bonded in an annular shape. The retention molds include an upper mold and a lower mold having respective retaining surfaces. Indents are provided in the retaining surface of the lower mold for engaging with the thickened portions projecting from the air chamber peripheral wall of the tube blank. By forming the indents in the retention surfaces of the lower molds, it is possible to hold the two ends of the tube blank without warping the tube blank and to precisely bond the two ends of the tube blank together.

Abstract: A tube tire for avoiding damage to a tube in charging a sealant, and for preventing the sealant from plugging an air valve of the tube. A first tube half and a second tube half have the same side and circular cross sections are joined together as raw rubber, and then vulcanized, thereby forming a tube consisting of the two tube halves and integrated in a seamless condition. An air chamber is defined in the first tube half, and a sealant chamber is filled with a sealant and is defined in the second tube half. When the tube is pierced, the sealant repairs a pierced hole to prevent the puncture. Further, the air chamber is separated from the sealant chamber, so that an air valve provided on the air chamber is not plugged with the sealant.

Abstract: To provide a method of manufacturing a sealant containing tire tube, which is capable of simply opening a sealant filling hole without use of any specialized jig, and a vulcanizing die therefor. A vulcanizing die includes an upper die, a lower die, and a filling hole opening device. The filling hole opening device includes a linear actuator, a drive shaft, and a cutter. The lower die has a cutter passage which passes through the vulcanizing die from outside to inside, and a cut piece recovery passage which extends from the outside of the vulcanizing die to a portion, near the inner opening end, of the cutter passage. The drive shaft of the linear actuator is inserted in the cutter passage, and the cutter is fixed to one end of the drive shaft.

Abstract: A tube blank 2' whose inside is divided into an air chamber 3 and a sealant chamber 7 by a partition wall 5 has an air relief port 4.sub.1 provided in a sealant chamber peripheral wall 4o and communicating a sealant chamber 7. At a vulcanizing step, the tube blank 2' is placed into a heating die 18, and a gas of a high temperature and a high pressure is supplied into an air chamber 3. This causes air remaining in the sealant chamber 7 to be discharged through the air relief port 4.sub.1, while bringing the partition wall 5 into close contact with the sealant chamber peripheral wall 4o, thereby performing a reliable vulcanization. When the tube blank 2' is removed from the heating die 18, the sealant chamber 7 is not expanded because of the existing of the air relief port 4.sub.1 and therefore, the partition wall 5 cannot be provided with an expanding tendency that forces the wall 5 to be stretched toward the air chamber peripheral wall 4i.

Abstract: A tube blank 2' whose inside is divided into an air chamber 3 and a sealant chamber 7 by a partition wall 5, is formed by extrusion and cut into a predetermined length. An air valve 6 is mounted to the tube blank 2' to communicate with the air chamber 3 and then, opposite ends of the tube blank is bonded by pressure bonding and vulcanized. A sealant charging bore 4.sub.1 is formed in the tube blank 2' to communicate with the sealant chamber 7. Thereafter, air is supplied to the air chamber 3 through the air valve 6 to urge the partition wall 5, thereby expelling the air from the sealant chamber 7. In this state, a sealant is supplied into the sealant chamber 7 through the sealant charging bore 4.sub.1. The sealant charging bore 4.sub.1 is closed by affixing a raw rubber sheet 19 and vulcanizing it.

Abstract: A multilayer nonwoven thermal insulating batt is provided. The batt comprises a blend of bonding staple fibers and staple fill fibers, the fibers being formed into a multilayer batt. The bonding fibers are subsequently bonded sparingly to staple fill fibers at the points of contact to enhance the structural stability of the multilayer batt but allow delamination of the individual web layers under mechanical action.

Abstract: A gasket is formed with a mounting portion which is generally cylindrical, and provides an anchoring projection extending radially from the outer side thereof. A sealing projection is joined to the mounting portion by a hinge section. The sealing projection is placed in compression when the gasket is formed into a circle, and becomes bistable. In one position of stability, the sealing projection is substantially aligned with the mounting portion, and in the other position of stability, the sealing projection is located generally within the mounting portion. The gasket is positioned around a core, with the sealing projection aligned with the mounting portion, and is cast into an opening provided by the material of the manhole riser. In such position, the sealing projection is partially embedded within the material of the riser. Prior to installation of a sewer pipe, the sealing projection is manually released from the material of the riser and is pushed through to its other position of stability.

Abstract: A means and method for applying innerliner material to a tire building drum and more particularly to a means and method for cutting and applying the innerliner material and further allowing for stock width measurement and precise centering without the possible edge distortion of known guiding systems.

Abstract: A retreading envelope is produced by extruding an elastomeric material in substantially tubular form, with portions of the wall thickness of the circumference of the extruded tubing being of a thickness substantially greater than the wall thickness of the remainder of the tubing, cutting a length of the extruded tubing from the tubing as extruded, and butt-seaming the free ends of the cut length to form an annular tube substantially of circular cross-section, with the thickened wall portions of the extruded length in the area of its outer periphery. The elastomeric material in the thickened wall portions of the annular tube is then caused, e.g.

Abstract: A tubular tire for cycles comprising a tubular toroidal body including an inner airtight tube to be inflated, the tire body or carcass being equipped, on the outer surface mating the wheel rim, with a rubberized tape having projecting portions such as profiles or prominences adapted to ensure a better engagement between the tire and the rim.The carcass is built by longitudinally joining together the edges of a rubberized fabric, the junction being radially external with respect to the tire and below the tread. The edges are joined either by overlapping or by abutment of the edges. In this latter case a reinforcement strip is provided between the carcass and the tread. An additional narrow strip protecting the junction is provided between the carcass and the inner or air tube.According to an embodiment the tire has a tunnel shaped cross-section obtained by suitably shaping the rubberized tape and the tire body when vulcanizing the tire.

Abstract: A tire for a wheelchair wheel or the like in the form of a composite extrusion comprising a relatively soft, elastomeric casing extruded over a semirigid core. End faces of a length of extruded stock are joined by thermal fusion developed by a ferromagnetic element inserted in the tire and exposed to high frequency electromagnetic radiation.

Abstract: An inner air-tube of a tire for bicycle, particular for racing cycle substantially composed of a thermoplastic urethane resin of a specific type. The urethane resin is comprised of a bifunctional polyol, a diisocyanate and a diol serving as a chain-propagating agent, the ratio by mole of the diisocyanate to a mixture of the bifunctional polyol and the diol being in the range of 1.05-1.10:1. The urethane resin of this type is readily after-crosslinked to improve its physical properties to a great extent.

Abstract: A self-activating ferrofluid-seal apparatus for a memory-disc-drive shaft, which seal apparatus comprises a ring magnet and a pair of pole pieces which form a cavity therebetween, a closed loop of a plastic tubular container with ferrofluid positioned within the cavity, and a penetration clamp to penetrate the plastic container prior to installation of the shaft element.

Abstract: An intravaginal contraceptive system for the pre-programmed, unattended delivery of an antifertility steroid is disclosed. The system comprises (a) an antifertility steroid, (b) a delivery module comprising a reservoir for storing the steroid in an amount for execution of the program, a rate controller which maintains the rate of steroid delivered in a contraceptive effective amount throughout the life of the system, an energy source for transferring steroid from the reservoir to the vagina, and a portal for releasing the steroid from the module to the vagina, (c) a platform which integrates the module into a unit sized, shaped and adapted for insertion and retention in a vagina, and (d) a contraceptive program which provides for the controlled release of steroid to produce an antifertility effect over a prolonged period of time.

Abstract: A retreading envelope is made by extruding a split tube of rubber which is passed over a rotating stretching wheel to stretch the split tube to a predetermined shape. The stretched split tube is removed from the stretching wheel after moving around a part of the circumference thereof and is turned inside out and placed on a table whereat it is formed and cut into an annular shape preparatory to completion of the retreading envelope.

Abstract: A high-pressure joint tester includes a pair (or two pairs) of plugs, each plug having an annular rigid channel containing an inflatable elastomeric annular tube. The spaced, parallel plugs are joined together by a rigid cylindrical wall extending between inner sides of the channels. The tubes are inflated at preselected pressures to seal against interior pipe walls on opposite sides of a locus where two pipe ends meet at a joint, and fluid is introduced under pressure through the cylindrical wall to the outer surface thereof. Rollers support the device for movement through the pipeline to be tested.

Abstract: This disclosure relates to a lubricant comprised of a mixture of a binder and a lubricating agent in a certain predetermined ratio. The binder is a wax type material having a melting point below the surface onto which the lubricant is applied and the lubricating agent is selected from a group consisting of talc, mica, whiting or Kaolin (China Clay).This lubricant is specifically designed to be applied to a relatively hot surface during a manufacturing operation so that the binder melts to form a film on the surface with the lubricating agent trapped or encapsulated within the film. The binder solidifies on cooling and the film then acts as a lubricant on the surface of the product in its later manufacturing operations and is of such a nature that it does not interfere with the final properties of the product.

Abstract: A single or multiply endless belt possessing predetermined elastic properties consisting of a flat knit substrate which has been impregnated with an elastomeric material and made endless by wrapping upon itself and the method of producing the same.

Abstract: A method of forming a reinforcing fabric and in particular a body ply for a radial tire. A continuous narrow ribbon, which is formed of an uncured elastomeric material having a plurality of spaced substantially parallel reinforcing means, preferably individual steel filaments, embedded in the elastomeric material and extending along the length of the ribbon, is helically wound on a cylindrical drum with successive turns of the ribbon overlapping one another to form a cylinder whose wall thickness is greater than the thickness of the ribbon. The helical winding of the ribbon is continued until the length of the wound cylinder is approximately equal to the circumference of the bead of the radial tire to be produced.

Abstract: In, or for use in, a vehicle inner tube splicing machine, a tube end cutting assembly comprising a cutting knife supporting carriage which is mounted on a pair of spaced parallel guide shafts and is reciprocated by hydraulically powered means. The knife supporting carriage also has mounted thereon scrap removal means which co-acts with cutting knives to remove off-cuts from said tube ends.

Abstract: A process for producing thermoplastic, elastomeric articles such as, for example, semi-pneumatic tires, comprising the steps of admixing a thermoplastic, elastomeric molding composition including a vulcanizable or otherwise thermosetable elastomer, inert filler materials, a plasticizer and certain processing aids. The molding composition is then milled into a flat sheet, extruded into a tubular shape, cut, shaped and then molded at a temperature less than about 70.degree. F into thermoplastic elastomeric articles such as, for example, semi-pneumatic tires.

Abstract: An improved seal for closing the space between a pipe and the wall of an opening through which it passes, using a linear extrusion of elastomeric material, of predetermined length to form a gasket. The extrusion has a hollow, pear-shaped head formed integrally with a T-shaped anchoring flange. It is curled into the form of a right cylinder, and its mating ends are vulcanized together. The pear-shaped portion is deflected radially inwardly and the T-shaped anchoring flange outwardly, the latter being then embedded in concrete used to wall the opening for the pipe. The pear-shaped portion is free in space and provides a pneumatic cushion for the pipe.

Abstract: Apparatus for forming annular articles from elongated workpieces of thermoplastic material is provided with clamps for grasping the ends of the workpiece, and a heating plate with two opposed surfaces; the clamps apply the ends of the workpiece to the plate to heat them and then bring the ends together.