Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8006730 | Pneumatic tire with tread having circumferential main grooves A pneumatic tire of the invention includes: a stepped-shaped raised area provided in the main groove positioned at a center area of the tire so as to be continued circumferentially of the tire, connected to either the main groove walls, and raised from the groove bo... | 08/30/2011 |
| 7992607 | Pneumatic tire for heavy load A pneumatic tire for heavy load enabling the co-existence of wet performance and uneven wear resistance performance is provided. The pneumatic tire for heavy load includes three circumferential main grooves 31 and 33 extending on a tread in the circumf... | 08/09/2011 |
| 7980281 | Pneumatic tire with tread having protruding stripe in groove bottom and tire mold for making the tire A groove bottom of a circumferential groove formed in a tread surface is provided with a protruding stripe extending along an extending direction of the circumferential groove. The protruding stripe is provided with a top head portion protruding toward a tire outer ... | 07/19/2011 |
| 7703491 | Pneumatic tire with tread having grooves including protrusions connected by joint To provide a pneumatic tire capable of improving resistance to stone drilling while ensuring snow traction performance, protrusions are arranged at intervals in a groove, each of the protrusions being lower than a height of a block and being separated from the block... | 04/27/2010 |
| 7497240 | Tire including projections having sides of unequal length and an undercut extending beneath the apex The tire has a plurality of radially outer rubber components defining a radially outer surface (S1) exposed to fluids having a relative displacement with respect to the rotating tire. At least one radially outer component has projections, the projections bein... | 03/03/2009 |
| 7350551 | Motorcycle tire with tread having main blocks and lower height sub blocks A motorcycle tire is provided that is capable of remarkably improving a traction characteristic and an anti-sideslip characteristic for cornering without deteriorating the mud expulsion characteristic especially on a dirt road. In embodiments, a motorcycle tire has ... | 04/01/2008 |
| 7273081 | Heavy load pneumatic tire with tread having closed sipeings in ribs and projecting stripe in main groove The present invention provides a heavy load pneumatic tire capable of effectively preventing a river wear from generating while preventing a crack or a stone-biting from generating in a sipeing end. In a heavy load pneumatic tire in which a tread portion has a rib p... | 09/25/2007 |
| 7269997 | Non-contact method and system for tire analysis A non-contact method and system for analyzing tire conditions. The system includes an emitter source for emitting radiation signals towards a tire having a treaded surface between two sidewalls. A detector is provided to receive signals reflected by the tire in resp... | 09/18/2007 |
| 7267148 | Measurement of adherence between a vehicle wheel and the roadway A tire includes, among the conventional tread pattern elements, at least one measuring element having a central zone and an encircling zone. In normal operation, the central zone 10 of a measuring element slides over the ground while, conversely, the tread as... | 09/11/2007 |
| 7096904 | Off road tire having variable width puncture preventing pads This invention relates to off-road tires, more specifically off-road tires for use with all-terrain vehicles, agricultural equipment, and construction equipment. A plurality of elongated pads are interposed between circumferentially adjacent lugs, preventing damage ... | 08/29/2006 |
| 7048022 | Tire tread with anti-puncture pads A pneumatic tire has a tread designed primarily for off-road activities, comprising large lugs. The tread can be defined as having a central tread width that is divided into a central tread zone and opposing lateral tread zones. The tire also has shoulder regions ex... | 05/23/2006 |
| 6923231 | Tire including blocks and transverse notches A tire for vehicle wheels provided with a tread pattern includes at least one continuous central circumferential groove straddling an equatorial plane of the tire, at least two continuous lateral circumferential grooves having median planes substantially parallel to... | 08/02/2005 |
| 6918420 | Pneumatic tire including groove bottom rib A pneumatic tire comprises a tread portion provided with at least one wide circumferential groove, the wide circumferential groove extending continuously in the tire circumferential direction and having a groove width GW of not less than 5% of the ground contacting ... | 07/19/2005 |
| 6796350 | Vehicle tire having non-uniformly profiled tread with respect to its center A vehicle tire having a non-uniformly profiled tread with respect to its center, with a circumferential extending superwide groove having a width of at least 30 mm provided in one half of the tread and two further circumferential grooves which are narrower in compar... | 09/28/2004 |
| 6796349 | Pneumatic tire including protrusion dividing groove space of main groove having groove width narrowed during inflation Disclosed is a pneumatic tire effectively controlling uneven wear occurring in the vicinity of a main groove even if a groove width of the main groove is narrowed due to change in tread radius during inflation. In the pneumatic tire, with regard to the main groove h... | 09/28/2004 |
| 6761197 | Tire and tread thereof A tyre for vehicles includes a carcass structure, a belt structure, and a tread. The tread includes a row of central blocks and a row of intermediate blocks arranged on each side of an equatorial plane of the tyre between a central longitudinal groove formed astride... | 07/13/2004 |
| 6736175 | Motor vehicle tire, particularly for lorries and the like A vehicle wheel tyre includes a carcass structure, a belt structure, and a tread. The tread includes four circumferential grooves and a plurality of transverse grooves that define at least five circumferential rows of blocks, each block approximating a polygon. The ... | 05/18/2004 |
| 6601624 | Tread groove noise diffusers A tire tread comprises an intermediate portion disposed between two shoulder portions. The tire tread has an expanded void area with a width and length of 1.2 to 5 times the average width of a non-circumferential groove in the tread. In the illustrated em... | 08/05/2003 |
| 6591881 | Automobile tire with removable tread fillers and tread cavities beneath the rolling surface An automobile tire is so constructed that it produces new tread as the old tread is about worn out. A removable filler is located beneath the tread cavity of the new tire. When the tread is worn down to near an unsafe condition, the filler is removed whic... | 07/15/2003 |
| 6591880 | Pneumatic tire including zig-zag circumferential fine grooves A pneumatic tire comprises a pair of bead portions, a pair of sidewall portion, a tread portion, a radial carcass of at least one ply, and a belt, wherein the tread portion is provided with two or more circumferential main grooves formed in a tread rubber... | 07/15/2003 |
| 6536490 | Off-road tire having a textured inner tread This invention relates to off-road tires 10, more specifically, one embodiment of this invention relates to an all-terrain vehicle tire 10 having an inner tread 13 with a textured surface 15.... | 03/25/2003 |
| 6530404 | Runflat all terrain tire An all terrain vehicle tire (10) has an annular tread (12) and a casing (11) radially inward of the tread (12). The tread (12) has a plurality of tread lugs (92, 94) and a central rib (95). The plurality of tread lugs (92, 94) are disposed on each tread h... | 03/11/2003 |
| 6505661 | Pneumatic tire having wide groove having two longitudinal ribs, intermediate ribs and lateral ribs A pneumatic tire comprises a tread portion provided with a wide groove having a bottom width of not less than 20 mm. The wide groove is provided on the groove bottom with at least one longitudinal rib extending in the longitudinal direction of the wide gr... | 01/14/2003 |
| 6467517 | Tire having sacrificial bridging The present invention provides a pneumatic tire having a tread portion comprising a plurality of axially spaced apart essentially longitudinal grooves separating essentially longitudinal ribs. On at least one of said ribs, transverse grooves or cuts repea... | 10/22/2002 |
| 6401774 | Off-road tire having puncture preventing pads This invention relates to off-road tires, more specifically, a preferred embodiment of this invention relates to a pneumatic all-terrain vehicle tire having puncture prevention pads 72.... | 06/11/2002 |
| 6343634 | Pnuematic tire including grounding terminals made of conductive rubber compound A pneumatic tire comprises a tread rubber extending over a ground contacting region of the tire, tread grooves disposed in the ground contacting region, static electricity grounding means comprising grounding terminals and a collector, the collector and g... | 02/05/2002 |
| 6305450 | Tire with specified belt profile in the absence of load and inflating pressure A tire (1) for motor-vehicle wheels comprises a tread band (10) and a belt structure (6), the tread band being molded with a raised pattern having a circumferential groove (11). In the absence of load and inflating pressure, the tire is characterized in t... | 10/23/2001 |
| 6253815 | Design pattern for a tire An opaque article having a surface and substantially asymmetric striae extending along the surface. A portion of the striae reside in a first area and have an orientation. Another portion of the striae reside in a second area and have an orientation subst... | 07/03/2001 |
| 6176284 | Pneumatic tire A pneumatic tire having a block type tread pattern improved in stone trapping, which comprises a tread portion being provided with a mesh of grooves to define a plurality of blocks consisting of shoulder blocks adjacent to the tread edges and central bloc... | 01/23/2001 |
| 6119744 | Heavy duty pneumatic tires including protrusions A heavy duty pneumatic tire comprises a tread provided with plural circumferential grooves, land portions defined by these circumferential grooves, and a groove fence portion formed in the circumferential groove so as to extend in a direction blocking the... | 09/19/2000 |
| 6116309 | Tread for a tire including five rib parts A new pneumatic radial ply truck tire 10 for use on steering axles has a tread 12 with four circumferential grooves 14 that divide the tread 12 into a pair of shoulder rows 24, a pair of riding rows 26 and a center row 28. Lateral grooves 20 divide the ro... | 09/12/2000 |
| 6112788 | Pneumatic tire including grooves having ribs therein A pneumatic tire comprises a tread portion provided with a plurality of longitudinal grooves, each of the longitudinal grooves extending continuously in the tire circumferential direction and having a bottom and a pair of sidewalls defining corners thereb... | 09/05/2000 |
| 6102092 | Tire having sacrificial bridging The present invention provides a pneumatic tire having a tread portion comprising a plurality of axially spaced apart essentially longitudinal grooves separating essentially longitudinal ribs. On at least one of said ribs, transverse grooves or cuts repea... | 08/15/2000 |
| 6006804 | Pneumatic radial tire including vibration buffer wall A pneumatic radial tire which is excellent in drainage and capable of reducing air-column-tube resonance sounds in circumferentially extending grooves to decrease noises. The pneumatic radial tire comprises a tread provided thereon with a groove extending... | 12/28/1999 |
| 6000451 | Pneumatic tire including at least one projection A pneumatic tire having a block type tread pattern improved in stone trapping, which comprises the tread portion provided with a mesh of grooves to define blocks, each block surrounded by at least one projection standing out from the groove bottom leaving... | 12/14/1999 |
| 5975172 | Pneumatic tire A pneumatic tire comprises a tread portion provided with tread grooves each having a bottom and sidewalls, the tread grooves provided with ejectors for preventing stone trapping. The ejectors protrude from the groove bottom independently of the sidewalls,... | 11/02/1999 |
| 5833781 | Pneumatic tire for heavy load A pneumatic tire for a heavy load is provided which prevents irregular abrasion generated at the edge of land portions of the tire tread. An irregular abrasion preventing land portion is thus formed at the edge of a land portion, inside the shoulder edge ... | 11/10/1998 |
| 5833780 | Pneumatic radial tire for heavy loads A pneumatic radial tire for heavy loads, formed by providing the shoulder side edge portions of at least the second inner ribs or block rows counted from the outermost parts of a tread portion with narrow ribs of a height equal to that of the ribs or bloc... | 11/10/1998 |
| 5549147 | Pneumatic tire including profiled elements A tread design for a pneumatic tire of radial construction for high-speed vehicles is provided. The tire has a height-to-width ratio of ࣘ0.6 with a tread design that is tied to the direction of rotation. The tread design comprises profiled elements that... | 08/27/1996 |
| 5549146 | Vehicle tire with wiper rib member A pneumatic vehicle tire has a tire tread with circumferential grooves. Each one of the circumferential grooves has a groove base and groove flanks. At least one of the circumferential grooves has a wiper rib member connected integrally to the groove base... | 08/27/1996 |
