Class / Patent application number | Description | Number of patent applications / Date published |
152209200 | For controlling noise by varying design cycle (e.g., specified pitch ratio, pitch sequence, etc.) | 16 |
20090320980 | NOISE REDUCING DEVICE, MANUFACTURING METHOD FOR THE NOISE REDUCING DEVICE, AND PNEUMATIC TIRE HAVING THE NOISE REDUCING DEVICE - Provided are: a noise reduction device with an improved adhesion of a noise absorbing member formed of a porous material and with a reduced processing time; a method of manufacturing the noise reduction device; and a pneumatic tire including the noise reduction device. The noise reduction device of the present invention includes: a noise absorbing member formed of a porous material; a band member for attaching the noise absorbing member to the inner surface of a tire; and locking members formed of a thermoplastic resin. The band member is formed of a thermoplastic resin. The noise absorbing member is disposed between the band member and the locking members. The locking members are bonded to the band member through the noise absorbing member by thermal fusion. | 12-31-2009 |
20100000640 | In Tyre Sound Absorber - An in tire sound absorber for a pneumatic wheel assembly including a wheel rim and a tire fitted to the wheel rim. The sound absorber comprises a first fibrous layer and a second fibrous layer with a higher air flow resistance than the first layer. The sound absorber is configured to fit around the wheel rim with the first layer in contact with a surface of the wheel rim and extending substantially between the second layer and the wheel rim. | 01-07-2010 |
20100282385 | TIRE WITH UNEVENLY-SPACED PITCH RATIOS - A tire is provided having a pitch sequence designed from this method. The pitch ratios are unevenly spaced. An exemplary tire has five pitch ratios of 1.00, 1.10, 1.25, 1.4, and 1.50. | 11-11-2010 |
20110240191 | PNEUMATIC TIRE AND PRODUCING METHOD THEREOF - The present invention enhances noise performance and anti-uneven wear performance. A pneumatic tire | 10-06-2011 |
20140238563 | PNEUMATIC TIRE - A pneumatic tire includes a tread portion provided with a pair of shoulder main grooves and at least one crown main groove between the shoulder main grooves to define a pair of middle portions between the adjacent shoulder main groove and crown main groove. The middle portions are provided with inner middle lug grooves and outer middle lug grooves. Each outer middle lug groove extends from the shoulder main groove to its axially inner end while decreasing its groove width. The outer middle lug groove are arranged with alternately arranged first pitches and second pitches, wherein the second pitches are larger than the first pitches. Each inner middle lug groove extends from the crown main groove to its axially outer end while decreasing its groove width. The inner middle lug grooves are arranged with substantially the same pitches. | 08-28-2014 |
20150375570 | PNEUMATIC TIRE - The pneumatic tire described herein is provided with, in a tread surface, at least two circumferential grooves continuously extending in a tread circumferential direction, and a resonator disposed in a land part defined between two circumferential grooves having different sectional areas of the at least two circumferential grooves, the resonator having an air chamber opened to a land part surface in a position separated away from the circumferential groove, one or more narrowed necks communicating the air chamber with one of the two circumferential grooves, and one or more narrowed necks communicating the air chamber with the other circumferential groove, wherein
| 12-31-2015 |
20160082778 | Pneumatic Tire - Provided is a pneumatic tire that can be obtained without requiring complicated design and has improved noise performance. On the inner vehicle-mounting side, the circumferential pitch length of the tire has pitch variation comprising at least three pitch lengths and, if the number of pitches is n and the pitch lengths (Pi) are Pi | 03-24-2016 |
20160137004 | LOW-NOISE TREAD FOR HEAVY VEHICLES - Tread for a tire to equip a heavy vehicle, having:—a plurality of grooves of circumferential overall orientation and a plurality of grooves of oblique overall orientation intersecting the circumferential grooves to delimit blocks, these circumferential and transverse grooves forming a directional tread pattern, imposing a running direction on the tread, a dividing plane separating part of the pattern to the left and part of the pattern to the right,—the circumferential grooves delimiting at least three intermediate rows of blocks and two edge rows situated axially on the outside of the intermediate rows, wherein each block has a contact face forming part of the tread surface, a front face and a rear face and two lateral faces, the front face and the rear face intersecting the contact face along a leading edge Ai and a trailing edge Fi respectively, Ai coming into the contact patch during running before Fi of the same block when running in the running direction, wherein Ai of all the blocks are offset from one another in the circumferential direction such that: they successively enter the contact patch during running,—they enter the contact patch alternately on one side of the dividing plane and then on the other side of the same dividing plane in a back-and-forth arrangement. | 05-19-2016 |
20160176235 | PNEUMATIC TIRE | 06-23-2016 |
152209300 | Having varying tread characteristic (e.g., groove depth, groove angle, etc.) other than design cycle | 7 |
20090242090 | Pneumatic Tire - A pneumatic tire has main grooves | 10-01-2009 |
20100175799 | PNEUMATIC TIRE - The present invention provides a pneumatic tire having: a circumferential groove continuously extending in the tire circumferential direction in a ground contact surface of a tread portion; and a resonator provided in a land portion and constituted of a resonance cell portion opened to a ground contact region at a position distanced from the circumferential groove and a siping portion making the resonance cell portion communicate with the circumferential groove, wherein change in a tread pattern as time lapses can be alleviated without scarifying an effect of reducing pipe resonance sounds. Specifically, an opening width of the siping portion at the ground contact surface of the tread portion is designed to change in the longitudinal direction thereof such that the opening with is relatively narrow on the side of the circumferential groove and relatively wide on the side of the resonance cell portion. | 07-15-2010 |
20100288408 | Pneumatic Tire - A pneumatic tire with improved steering stability without raising air columnar resonance noise level is provided. The pneumatic tire comprises upper thin grooves | 11-18-2010 |
20110048598 | PNEUMATIC TIRE - Provided is a pneumatic tire which employs pitch variation for suppressing pattern noise and has uniformity further improved. Pitches | 03-03-2011 |
20130292017 | PNUEMATIC TIRE - A pneumatic tire comprises a tread portion provided with a shoulder main groove, shoulder lateral grooves extending from the shoulder main groove toward axially outwardly, the shoulder main groove extending in a zigzag manner comprising linear portions and curved portions which are arranged alternately in a circumferential direction of the tire, each linear portion inclined with respect to the circumferential direction of the tire, each curved portion having a radius of curvature of from 12-80 mm, the curved portion protruding toward axially outwardly of the tire, the shoulder main groove having a pair of groove edges and a circumferential space therebetween which straightly extends along the circumferential direction of the tire without coming into contact with both groove edges and the circumferential space with an axial width of from 0.2 to 0.7 times an axial groove width of the shoulder main groove. | 11-07-2013 |
20150367689 | PNEUMATIC TIRE - The pneumatic tire described herein is provided with, in a tread surface, at least two circumferential grooves continuously extending in a tread circumferential direction, and a resonator disposed in a land part defined between two circumferential grooves having different sectional areas of the at least two circumferential grooves, the resonator having an air chamber opened to a land part surface in a position separated away from the circumferential groove, one or more narrowed necks communicating the air chamber with one of the two circumferential grooves, and one or more narrowed necks communicating the air chamber with the other circumferential groove, wherein
| 12-24-2015 |
20160016436 | Tire With Tread Pattern Including Sub-Surface Stiffness Tuning And Method - A tire has an axis of rotation and a tread pattern that includes a plurality of tread blocks having differing circumferential shear stiffness values. The tread pattern also includes a plurality of sub-surface features that are operatively associated with at least some of the tread blocks. The combination of a tread block and a sub-surface feature can alter the circumferential shear stiffness value of tread block to thereby tune the tread pattern. A method of manufacture is also included. | 01-21-2016 |