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Class 152/209.18 - Having groove or sipe with specified dimension or structure therewithin


Subclass of Class 152 - Resilient tires and wheels
Definition: Tread having recesses identified as grooves, incisions,
No. of patents: 336
Last issue date: 05/08/2012


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NumberTitleIssue Date
8171969Pneumatic tire
A sipe is formed in a block provided in a tread surface, wide portions extending in a sipe length direction are formed in each of a kick-out side and a step-in side of the sipe, and a total of heights of the wide portions in the kick-out side of the sipe is made lar...
05/08/2012
8127811Sipe blade and tire molded using the same
A sipe blade for forming a sipe with one end opened and the other end closed in a land portion on a tread surface of a tire includes a front-end portion that forms the closed end of the sipe and a connection-end portion that forms the open end of the sipe being conn...
03/06/2012
8047244Pneumatic tire with tread having radially extending fine grooves
A pneumatic tire having an improved noise performance without deteriorating the drainage performance and having in a tread portion at least one circumferential main groove 3 which extend continuously in the tire circumferential direction, wherein the circumfe...
11/01/2011
7958921Pneumatic tire with tread having sub grooves in blocks, center main groove and subsidiary main grooves
A pneumatic tire having a designated rotational direction is disclosed, wherein an entire area having a width 85% of a total tire width and a center area having a width 30% of the total tire width are defined in a tread portion. A center main groove is positioned on...
06/14/2011
7926528Transverse tread groove profile
A tire tread comprising a plurality of grooves opening on to a running surface, each groove having an average orientation and being defined by facing walls, these walls being connected together by a groove bottom, each groove being defined geometrically by a transve...
04/19/2011
7900668Pneumatic tire with tread including gently slant grooves having two different inclination angles
In a pneumatic tire having excellent drainage property and performances on snow, a central main groove 2 and a side main groove 4 and first and second gently slant grooves 5, 6 are arranged in a tread portion 1, and the first and second g...
03/08/2011
7874332Pneumatic tire with tread gauge of 95 mm or more having circumferential thin grooves, crosswise thin grooves and sub-thin grooves being closed at time of tread contact of fixed load
A pneumatic tire includes a column of center blocks (18) partitioned, on a tread center region, by circumferential thin grooves (14) formed along a tire circumferential direction and crosswise thin grooves (15) formed along a tire width directio...
01/25/2011
7861755Pneumatic tire with tread having middle rib, middle lateral grooves, assistant grooves and lateral narrow grooves
A pneumatic tire includes a tread surface having a middle rib defined by a first circumferential groove and a second circumferential groove in its center region. Middle lateral grooves, that obliquely extend in the widthwise direction of the tire, are disposed at pr...
01/04/2011
7836926Pneumatic tire with rib having widthwise sipes and circumferential sipe
A circumferential sipe extends continuously in the circumferential direction of the tire in the center region of the tread surface section of a rib defined between circumferential grooves. Widthwise sipes are disposed at prescribed intervals in the circumferential d...
11/23/2010
7819153Tire including concave recesses in a circumferential tread
A tire having an equatorial plane and a circumferential tread is provided. The tread includes at least one recess defined by at least one concave surface having a plurality of sipes formed therein. Optionally, the at least one concave surface can include one or more...
10/26/2010
7814951Pneumatic tire having tread including convexly curved fine grooves
A pneumatic tire which can enhance performance on snow while assuring performance in wet or dry condition is provided. A plurality of inclined lateral grooves 16 which extend from the tread edge 12E toward the tire equatorial surface CL, being i...
10/19/2010
7802596Pneumatic tire with tread having center land and assistant grooves
There is provided a pneumatic tire capable of improving on-snow performance on a snowy road surface including a sherbet-like snowy road surface without deteriorating on-ice performance. An assistant groove 6 less in width than the main grooves 2 extend...
09/28/2010
7784509Pneumatic tire
A pneumatic tire comprises a tread portion provided with axial grooves opened at a tread edge and a circumferential groove adjacent to the tread edge, wherein each of the axial grooves is provided between the circumferential groove and tread edge with a thin partiti...
08/31/2010
7779876Reinforced blade for use in a vulcanization mold to form a sipe in a tire
A reinforced blade for use in a tire vulcanization mold is provided. The reinforced blade, having a thickness of less than 0.030 inches, is configured to form a sipe in a tread of a tire in the tire vulcanization mold. The reinforced blade includes a main segment an...
08/24/2010
7770619Pneumatic tire with tread having lateral grooves and sub grooves
Provided is a pneumatic tire in which left- and right-side lateral grooves extend between first main grooves and second main grooves, and in which left- and right-side sub grooves extend halfway from the second main grooves toward the first main grooves. The lateral...
08/10/2010
7762297Heavy duty pneumatic tire
It aims to provide a heavy duty pneumatic tire with block patterns and capable of improving deflected wear resisting performances without sacrificing wet grip performances or on-snow performances and that can particularly be favorably used for all seasons. The prese...
07/27/2010
7604030Pneumatic tire with tread having rib shaped land section, lug grooves and sipes
A pneumatic tire 10a including in a tread at least two circumferential major grooves 20a, 21a, 22a, and 23a extending in a tire circumferential direction and a rib-shaped land section formed, the ...
10/20/2009
7597127Tire with tread including circumferential grooves having generally sinusoidal contour
Tire having a tread pattern with superior performance characteristics. The tread pattern includes ribs and circumferential grooves which are at least one of tapered and/or generally V-shaped. The walls of each circumferential groove have a wavy and/or sinusoidal con...
10/06/2009
7546861Tire with tread having crossed configuration sipe
A tire has a tread with a plurality of ground engaging tread elements. In at least one of the tread elements is a sipe having a depth in the radial direction of the tire. The sipe has a crossed configuration comprised of two sipes. At least one of the sipes of the c...
06/16/2009
7506676Pneumatic tire with tread having V-shaped transverse grooves
A tread surface the tire rotational direction of which is specified in one direction includes a first main see-through groove extending in the circumferential direction of the tire in a region of from 4% to 15% of the tire ground contact width from the tire equatori...
03/24/2009
7500500Pneumatic tire for use on iced and snowed road surfaces
A pneumatic tire for use on iced and snowed road surfaces has a tread surface. The tread surface has a plurality of main grooves extending in a circumferential direction of the tire and a plurality of lateral grooves extending in a width direction of the tire. Block...
03/10/2009
7484542Tire tread with sipes having tie bars
A tire tread has at least three rows of tread elements, each tread element in the at rows has at least one sipe and at least one sipe in each tread element row has a tie bar therein. Each tie bar in the sipes has a volume, and the volume of the sipe tie bar in each ...
02/03/2009
7438100Pneumatic tire for ice-bound or snow-covered road
A pneumatic tire for ice-bound or snow-covered roads, which has fine grooves formed in a tread surface, thereby improving brake and drive performance on ice-bound roads in early periods of wear. This pneumatic tire for ice-bound or snow-covered roads has its tread p...
10/21/2008
7416004Pneumatic tire with tread including blocks having open and closed sipes
A pneumatic tire comprises a tread portion provided with blocks, the blocks are axially divided by at least one circumferential groove and circumferentially divided by oblique grooves inclined with respect to the tire axial direction towards one direction, and each ...
08/26/2008
7404423Pneumatic tire with tread including blocks having approximately equal aspect ratios
In a pneumatic tire, a block unit includes a center block and side blocks separated by a communication groove. Aspect ratios of the center block and the side blocks are approximately the same. The center block and the side blocks are arranged such that a longitudina...
07/29/2008
7392832Pneumatic tire having tread blocks with skewed walls
A pneumatic tire with an improved balance between noise reduction and hydroplaning resistance as the tread wears. The tread of the pneumatic tire includes skewed tread blocks having walls that, as the tread wears, change the character of the lateral and circumferent...
07/01/2008
7377300Elastic tire for measuring the grip of a vehicle equipped therewith on a ground
An elastic tire according to the invention comprises a tread (1) which comprises at least one unit (3) for measuring the grip of the tire on the ground, the measuring unit (3) being intended to come into contact with the ground on each revolutio...
05/27/2008
7369942Vehicle traveling state determining apparatus
The present invention provides a vehicle traveling state determining apparatus including a camera which picks up an image of a road surface in a direction in which a vehicle is traveling, and zigzag state detecting section for determining a zigzag amount on the basi...
05/06/2008
7360569Pneumatic tire with tread including circumferential rib region, block regions and sipes
It is a subject to improve wet performances and noise performances while restricting degradations in dry performances, and for solving this subject, the pneumatic tire is comprised of a tread grounding surface that is partitioned into four to five regions by three t...
04/22/2008
7360568Tire having narrowing sipes
A tire having sipes is provided. The tire includes a circumferential tread configured with at least one rib bound by at least one groove. The rib has a plurality of sipes that extend from the groove into the rib wherein one or more of the sipes narrow in a direction...
04/22/2008
7350552Directional tread having incisions of varying inclination
A tread (1) for steer axle tires for a heavy vehicle, the tire having a preferred direction of travel, the tread comprising grooves (2) of generally circumferential orientation defining at least three ribs (30, 31, 32, 33, 34), two of the ribs f...
04/01/2008
7347239Tire noise reducing system
A tire noise reducing system comprises a pneumatic tire with a hollow, a wheel rim on which the tire is mounted so that said hollow forms a closed cavity, and a noise damper disposed in the closed cavity, wherein the noise damper is formed by fixing a strip of a por...
03/25/2008
7347238Pneumatic tire with tread including chamfer portions
A pneumatic tire having improved wet performance without sacrificing steering stability. A pair of central circumferential main grooves 14 and a pair of side circumferential main grooves 16 are arranged on a tread 12, to obtain a fundamentally h...
03/25/2008
7341082Shoulder ribs for pneumatic tires
A pneumatic tire with a shoulder rib and lateral grooves defined in a shoulder rib. A tread and shoulder of the tire are joined along a shoulder edge. The tread includes a circumferential groove defining the shoulder rib, which is adjacent to the tire's shoulder. Th...
03/11/2008
7341083Pneumatic radial tire with tread having blocks provided with sipes
A wheel tread part 2 of a tread is constituted of a longitudinal main groove 3 formed in a circumferential direction via a center of a width direction, a plurality of longitudinal subgrooves 4 formed on both side parts of the longitudinal main g...
03/11/2008
7337816Tire tread with circumferential and lateral grooves having asymmetrical cross-section
A pneumatic tire for dirt track racing comprising lateral and circumferential grooves forming blocks on the tread surface. The blocks have leading and trailing edge walls. The trailing edge walls of the blocks are buttressed by inclining the walls at an angle of 20Â...
03/04/2008
7334619Pneumatic tire with blocks having zigzag sipes
A pneumatic tire comprising a tread portion 2 having blocks 7 each provided with sipeings 10, wherein each sipeing 10 has an opening having a zigzag portion 11 in its opening edge shape J at a block surface S, and opposing wall sur...
02/26/2008
7334618Pneumatic tire with tread having cap layer and spaced apart base layers
A tread (14) of a tire (10) includes a tread rubber layer (16). The tread rubber layer (16) has a two-layer structure including a base layer (23) and a cap layer (24). The base layer (23) is provided with a comb-shape...
02/26/2008
7322390Pneumatic tire having tread with blocks having obtuse angle corner portions
A tread surface, the tire rotational direction of which is specified in one direction, has a center region. Blocks having obtuse-angled corner portions and acute-angled corner portions are defined in the center region by at least one first circumferential groove ext...
01/29/2008
7322391Vehicle pneumatic tire having truncated groove
A tire including a tread rubber having at least one positive profile. Wherein the positive profile is formed by at least one circumferential groove. Further, the tire includes at least one truncated groove extending into the positive profile from the circumferential...
01/29/2008
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