KABUSHIKI KAISHA BRIDGESTONE Patent applications |
Patent application number | Title | Published |
20140020813 | TIRE MANUFACTURING METHOD - A tire manufacturing method to obtain a base tire superior in uniformity when the base tire has a cushion gum applied thereon. In this process of tire manufacture, the thickness from a belt, which is located in the outermost layer of the base tire having an application surface for the cushion gum, to the application surface is measured along the circumference of the base tire so as to detect a maximum thickness position. Then the circumferential winding of the cushion gum extruded from an extrusion molding unit is started from the maximum thickness position. | 01-23-2014 |
20130169974 | METHOD AND APPARATUS FOR DETECTING SHAPE OF STRIP-SHAPED MEMBER AND TWO-DIMENSIONAL DISPLACEMENT SENSOR - A two-dimensional displacement sensor includes first and second laser units that emit first laser light incident on the surface of the strip-shaped member from a direction intersecting the thickness direction of the strip-shaped member and second laser light incident on the surface of the strip-shaped member from a direction parallel to the thickness direction of the strip-shaped member, a camera that has a light receiving element for receiving light reflected from the surface of the strip-shaped member and measures the amount of displacement of the surface of the strip-shaped member from the reflected light receiving position detected by the light receiving element, an optical element for focusing the reflected light on the light receiving element, and a switching member for switching the laser light to be incident on the surface of the strip-shaped member between the first laser light and the second laser light. | 07-04-2013 |
20130139957 | TIRE MANUFACTURING APPARATUS AND TIRE MANUFACTURING METHOD - A tire manufacturing apparatus and a tire manufacturing method capable of efficiently manufacturing quality tire by uniformly expanding the diameter of an annular tread and mounting the tread on a base tire without axial deviation. The tire manufacturing apparatus for mounting an annular tread on the outer periphery of a base tire includes a drum for securing a base tire, a plurality of holding means each having a holding surface for holding the outer periphery of the annular tread, a moving means for moving the holding means along the central axis of the base tire, a sealing means for sealing the opening on one side of the annular tread, and an air supplying means for supplying air into a space surrounded by the annular tread and the sealing means. | 06-06-2013 |
20130131915 | METHOD FOR DETERMINING INNER FAILURE OF TIRE - A method for accurately determining internal failures, such as separations, of a tire without affecting tire behaviors. Radial acceleration signals of a tire during vehicular travel are detected by an acceleration sensor ( | 05-23-2013 |
20130116972 | METHOD FOR ESTIMATING ROAD SURFACE CONDITION - A method capable of estimating a snowy road surface condition during vehicular travel in finer classification. In this method, tire vibrations in the circumferential direction, road surface temperature (T), and tire-generated sound are detected by an acceleration sensor, a road surface thermometer, and a microphone, respectively. Then band values P | 05-09-2013 |
20130037216 | TIRE MANUFACTURING APPARATUS - A tire manufacturing apparatus for precisely mounting an annular tread on a base tire with the width center of the base tire aligned with the width center of the annular tread. The tire manufacturing apparatus includes a drum to which a base tire is secured, a holding means for holding the annular tread by its inner periphery, and a moving means for having the holding means approach or separate from the drum along the rotation axis of the drum. The holding means is provided with a conveying means to have the annular tread, which is held by the holding means, approach or separate from the base tire. And the conveying means mounts the annular tread on the outer periphery of the base tire by conveying the annular tread in the approaching direction at a conveyance speed which is equal to the travel speed of the holding means in the separating direction. | 02-14-2013 |
20130020001 | PNEUMATIC TIRE - A pneumatic tire capable of improving snowy road performance while controlling the occurrence of uneven wear of the tire due to buckling deformation. A tire | 01-24-2013 |
20120330493 | METHOD AND APPARATUS FOR DETERMINING ROAD SURFACE CONDITION - A method, featuring robustness against changes in tire size, is provided for determining a road surface condition by dividing a time-series waveform of tire vibrations into windows without resorting to detection of the peak positions or measurement of the wheel speed. A time-series waveform of tire vibrations detected by a tire vibration detecting unit is windowed by a windowing unit. Time-series waveforms are extracted from the respective time windows, feature vectors X are calculated therefor, and then likelihoods Z for road-surface HMMs (hidden Markov models) are calculated. The likelihoods Z | 12-27-2012 |
20120324857 | METHOD AND SYSTEM FOR MANUFACTURING CABLE BEAD - A method and system for manufacturing high-quality cable beads with efficiency. The method includes the steps of arranging a plurality of carriages carrying a core and a reel wound with a wire around a reel revolving means having at least two arms, attaching the core to a core rotating means for rotating the core in a circumferential direction by holding it with one of the arms and positioning the reel on one side of the core by holding it with the other of the arms, manufacturing a cable bead by revolving the reel by holding it alternately with each of the two arms, and returning the cable bead and the reel to the carriage using the two arms. Thus, the setting of the reel and the core, the manufacturing of a cable bead, and the returning of the cable bead and the reel back to the carriage are performed automatically. | 12-27-2012 |
20120167687 | METHOD AND APPARATUS FOR ESTIMATING CONTACT PATCH SHAPE OF TIRE - A simple method and apparatus for accurately estimating the contact patch shape of a moving tire. The vibration waveforms of a tire ( | 07-05-2012 |
20120111464 | METHOD FOR MANUFACTURING BASE TIRE, CURING MACHINE, AND BASE TIRE - A method for manufacturing a base tire ensuring a cure-molding of a green tire therefor without overcure or undercure in the thin-walled shoulder portions of the tread region and the bead regions, a curing machine that preferably enables the base tire manufacturing method, and a base tire thus manufactured are provided. To that end, a base tire is enclosed within a curing mold, the side regions of the base tire are heated by a first heating means, the tread region of the base tire is heated by a second heating means, and a cure-molding is performed such that the amount of heat given to the tread region by the second heating means is smaller than the amount of heat given to the side regions by the first heating means. | 05-10-2012 |
20120092149 | TIRE INSPECTION APPARATUS - A inspection apparatus arranged with a plurality of cameras located at relatively displaced circumferential positions and set for the respective shooting positions different from each other in the axial direction of the tire. Thus the images of the inner circumferential surface of the tire are shot by the plurality of cameras as the tire is rotated circumferentially relative to the plurality of cameras. During this operation, markers are inserted at the same time in the images shot by all of the cameras. The images are synthesized using these markers as reference positions in aligning the shot images in accordance with the relative displacements of the cameras in the circumferential direction. | 04-19-2012 |
20110316290 | INTRA-TIRE POWER GENERATING APPARATUS - An intra-tire power generating apparatus capable of producing high power is provided. The apparatus includes rotary magnets and rotary weights, which rotate in response to variations in centrifugal force and circumferential acceleration working on the tire of a running vehicle, and a coil unit, which is located between two rotary magnets facing each other and generates voltages through electromagnetic induction from the rotary magnets. In the apparatus, the rotary magnets and the rotary weights have an identical center line of rotation. The rotary weights are so formed as to have their center of gravity dislocated from the center line of rotation. The rotary magnets are each provided, in the plane orthogonal to the center line of rotation, with an even number of regions adjoining in the circumferential direction around the center line of rotation, the adjoining regions having different magnetic poles from each other. The two rotary magnets facing each other are so configured as to rotate while maintaining the opposition of their respective regions having mutually opposite magnetic poles. And the coil unit has coil windings, each of which is of a tubular shape surrounding a space through which the magnetic flux generated between the mutually opposite magnetic poles of the two rotating rotary magnets passes. | 12-29-2011 |
20110288814 | TIRE APPEARANCE INSPECTION APPARATUS AND METHOD - A tire appearance inspection apparatus and method employing image processing is capable of performing tire appearance inspection with great accuracy. The tire appearance inspection apparatus includes a sectional shape acquiring device for acquiring cross-sectional shapes of a tire in the radial direction along the circumference of the tire, an arc fitting device for fitting an arc to each of the cross-sectional shapes, an arc center position calculating device for calculating the center positions of the arcs, and a sectional shape aligning device for aligning the cross-sectional shapes using the center positions of the arcs for the cross-sectional shapes. | 11-24-2011 |
20110188731 | METHOD AND APPARATUS FOR DETECTING SURFACE UNEVENNESS OF OBJECT UNDER INSPECTION - Minute surface unevenness formed on the surface of an object under inspection is detected, thereby improving the accuracy of an appearance inspection. A target surface in the sidewall region ( | 08-04-2011 |
20110118989 | METHOD FOR ESTIMATING TIRE WEAR AND APPARATUS FOR ESTIMATING TIRE WEAR - The degree of tire wear is estimated with constancy and accuracy even when the road surface becomes rough during a vehicular run. The deformation speeds V | 05-19-2011 |
20110102811 | APPARATUS AND METHOD FOR MEASURING CYLINDRICALLY-SHAPED OBJECT AND APPARATUS FOR INSPECTING TIRE APPEARANCE - A measuring apparatus for automatically measuring the height, the dimensions of the inner and outer surfaces, and the shape of a cylindrically-shaped object. The measuring apparatus includes a measuring head vertically moving along a positioning guide supported by a support post integral with a measuring table, a height displacement measuring device, which comprises a laser distance meter provided on the measuring table, and an arithmetic processing unit. The measurement starts as the measuring head is raised by a weight from a measuring start position of the measuring table. The inner and outer surfaces of a tire are measured based on the measurements by an inner surface measuring device provided with three laser distance meters mounted to the measuring head and an outer surface measuring device having a laser distance meter and the displacement change measurement of the measuring head by the height displacement measuring device. Required dimensional values are calculated from the measured values, using the arithmetic processing unit. | 05-05-2011 |
20110050213 | BELT MONITORING SYSTEM - A belt monitoring system which can accurately monitor the condition of a conveyor belt by correcting it for the effect of belt deviation. Wear detecting magnets ( | 03-03-2011 |
20110011505 | PNEUMATIC TIRE - A pneumatic tire capable of reducing air column resonance arising from circumferential grooves without changing the shape of unilaterally open-ended lug grooves. Lug grooves | 01-20-2011 |
20100296738 | METHOD AND APPARATUS FOR INSPECTING TIRE SHAPE - A method and apparatus for accurately detecting the shape of a tire side by performing an image processing of removing a knurled region from the tire side. An actual image of a tire side having a knurled region obtained by a light-section method is Fourier-transformed into a Fourier-transformed image by a Fourier-transformed image creating unit of an image processing means. Cross-shaped peaks appearing discretely at predefined frequency intervals on a straight line in the Fourier-transformed image are identified as peaks attributable to the knurled region by a knurled component identifying unit. The cross-shaped peaks are removed from the Fourier-transformed image by a knurl component removing unit, and the Fourier-transformed image from which the peaks are removed is inverse-Fourier-transformed into an actual image by an inverse-Fourier-transforming unit. And the acceptability of the shape of the tire side is determined using the actual image. | 11-25-2010 |
20100294013 | METHOD FOR MANUFACTURING BRASS-PLATED STEEL WIRE AND APPARATUS FOR DRAWING BRASS-PLATED STEEL WIRE - A wire drawing apparatus ( | 11-25-2010 |
20100282386 | PNEUMATIC TIRE FOR TWO-WHEELED VEHICLE - This invention provides a pneumatic tire for a two-wheeled vehicle with improved lateral grip at cornering, controlled tread wear in the shoulder regions, ensured uniformity of wear on the left and the right, and secured heat generation in the tread on an actual vehicle. The pneumatic tire has left and right dissimilar rubber layers ( | 11-11-2010 |
20100212796 | PNEUMATIC TIRE - A pneumatic tire ( | 08-26-2010 |
20100199756 | METHOD AND APPARATUS FOR DETECTING WEAR OF TIRE - A method and apparatus for detecting the state of wear of the tire tread with accuracy and durability are provided. Acceleration of the inner surface of the tire tread is detected by an acceleration sensor installed in an inner liner region of the tire. From a thus detected time-series waveform of acceleration, an acceleration waveform in the leading edge region including a leading peak which occurs when the block engages with the road surface or an acceleration waveform in the trailing edge region including a trailing peak which occurs when the block disengages from the road surface is extracted. A frequency band value P | 08-12-2010 |
20100147062 | METHOD OF ESTIMATING TIRE CONTACT STATE, TIRE CONTACT STATE ESTIMATING APPARATUS AND TIRE FOR TIRE CONTACT STATE ESTIMATION - Provided is a tire contact state estimating method using a tire for estimating a contact state ( | 06-17-2010 |
20100065180 | PNEUMATIC TIRE - A belt reinforcement layer | 03-18-2010 |
20100060443 | APPARATUS FOR ESTIMATING TIRE WEAR AMOUNT AND A VEHICLE ON WHICH THE APPARATUS FOR ESTIMATING TIRE WEAR IS MOUNTED - A vehicle velocity detector | 03-11-2010 |
20100043541 | TIRE EQUIPPED WITH A SENSOR AND A METHOD OF MEASURING STRAIN AMOUNT OF THE TIRE - This invention provides a tire ( | 02-25-2010 |
20100000811 | IN-WHEEL MOTOR SYSTEM - A geared motor | 01-07-2010 |
20090266458 | PNEUMATIC TIRE - On a pneumatic tire provided with a lug-grooved rib | 10-29-2009 |
20090155620 | BRASS-PLATED STEEL WIRE FOR REINFORCING RUBBER ARTICLES AND METHOD FOR MANUFACTURING THE SAME - Problems to be solved by the invention: It is an object of the present invention to provide a brass-plated steel wire for reinforcing rubber articles capable of surely improving adhesiveness between brass-plated steel wire and rubber and a method for manufacturing the same. | 06-18-2009 |
20090133944 | IN-WHEEL MOTOR SYSTEM - An electric motor | 05-28-2009 |
20090105921 | ROAD SURFACE CONDITION ESTIMATING METHOD, ROAD SURFACE CONDITION ESTIMATING TIRE, ROAD SURFACE CONDITION ESTIMATING APPARATUS, AND VEHICLE CONTROL APPARATUS - The vibration of a tire | 04-23-2009 |
20090055040 | METHOD FOR ESTIMATING TIRE SLIP ANGLE AND A TIRE WITH SENSORS MOUNTED THEREIN - Deformation of a tire is measured by a paired sensor | 02-26-2009 |
20090049902 | METHOD FOR CORRECTING CONCAVE-CONVEX EXHIBITED ON A SURFACE OF A BODY OF ROTATION - Providing a method for correcting a data of irregularity of a surface of a body of rotation with an eccentricity included to a data being not affected by eccentricity. | 02-26-2009 |