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.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8162642 | Molding blade for pneumatic tire tread A pneumatic tire tread has tread elements formed by circumferential and/or lateral grooves. At least one tread element has a sipe that devolves from a constant width sipe having a three dimensional aspect in at least a portion of the radially outer portion of the si... | 04/24/2012 |
| 8082961 | Tire with retractable stud A retractable stud pin assembly is described for use in a conventional tire. The stud pin assembly includes a housing having an elastomer compartment and a spring in cooperation with the elastomer. A stud pin is mounted to the spring. The assembly may further option... | 12/27/2011 |
| 8075294 | Tire mold and tire with internal grooves in shoulder area A tire mold is described that includes a plurality of tread molding segments having an inner surface for molding the tire tread. The mold further includes a plurality of sidewall plates having an inner surface for molding the tire sidewall. The tread mold segments t... | 12/13/2011 |
| 8057204 | Tire curing bladder An expandable bladder for shaping a pneumatic tire is provided. The bladder in an unmounted, relaxed state has a shaped body having a pair of opposed annular beads, said body further comprising a central portion, sidewall portions, and shoulder portions interposed b... | 11/15/2011 |
| 7971615 | Tire with turned down ply construction The tire includes a first and second axially-spaced bead core, a carcass having at least one belt extending under a tread, and a first ply layer having first and second ends, a first end is located axially outside and adjacent a first bead core, and a second end tha... | 07/05/2011 |
| 7963756 | Segmented tire mold The present invention relates to an apparatus for providing the upper and lower portions of two-part tire molds with an expansible opening to provide clearance for the insertion of green tires, in particular large green tires of the sort used on industrial or off-ro... | 06/21/2011 |
| 7963755 | Post cure rotational stations An apparatus for cooling a cured tire comprising: A retractable support member having a distal end connected to a support plate; the support plate having an inflatable bladder mounted about its circumferential edge... | 06/21/2011 |
| 7963018 | Tire bead separation method and device A method and apparatus is provided for separating two or more annular members such as bead assemblies or bead and apex assemblies. First, a flexible member is inserted into the annulus of the annular members. Next, the flexible member is inflated until the outer sur... | 06/21/2011 |
| 7897075 | Calender gap control A method and apparatus for a calendering system is provided to allow for fine gauge adjustment of the product. The calender system has a first and second roller each having a first and second end mounted in opposed end supports. The end supports each have an inlet a... | 03/01/2011 |
| 7896993 | Method and apparatus for building and transferring a tread belt structure The method of building and transferring a tread belt structure on a portable and collapsible building drum 10 mounted coaxially on a building machine 100 with a rotatable shaft 120 is disclosed. The method includes the steps of forming the annul... | 03/01/2011 |
| 7896643 | Venting device for mold A mold and mold blocking member is provided for use in a vent bore of a mold for the manufacture of rubber products. The mold blocking member has a tubular hollow body having a first end and a second end, wherein the first end has a cap having an outer dimension gre... | 03/01/2011 |
| 7811078 | Venting device for mold A mold blocking member for use in a vent bore of a mold for the manufacture of rubber products is provided. The mold blocking member has a tubular hollow body having a first end and a second end, wherein the first end has a cap with an inner portion surrounded by a ... | 10/12/2010 |
| 7793692 | Pneumatic tire tread having sipe that devolves into groove as tread wears A pneumatic tire tread has tread elements formed by circumferential and/or lateral grooves. At least one tread element has a sipe that devolves from a constant width sipe having a three dimensional aspect in at least a portion of the radially outer portion of the si... | 09/14/2010 |
| 7789120 | Tire having a composite belt structure A pneumatic tire having a carcass and a belt reinforcing structure wherein the belt reinforcing structure is a composite belt structure having at least one pair of radially outer zigzag layers and at least one spirally wound belt layer with cords inclined at an incl... | 09/07/2010 |
| 7780809 | Method for forming elastomeric tire component and a tire A method of forming an elastomeric tire component is provided, comprising the following steps. An apparatus is provided which includes a rotating applicator head and a non-rotating portion. The non-rotating portion has an internal channel having a first end in fluid... | 08/24/2010 |
| 7780807 | Air shaping of green tire carcass An apparatus for shaping a green tire carcass is provided having a bladder mounted to a first and second support, a retractable support shaft mounted inside the bladder, and upper and lower bead ring for mounting the beads of the tire carcass thereon, wherein one of... | 08/24/2010 |
| 7670449 | Method of manufacturing tire with turned down ply construction A method of producing a tire having an outside-in ply construction is provided. The method includes the steps of: providing a tire building drum; laying an inner liner on said drum, applying a first layer of ply on the right hand side of the drum so that a first end... | 03/02/2010 |
| 7637296 | Pneumatic driver tire for tracked vehicle A pneumatic drive tire for tracked vehicles is provided having an outer tread surface divided into two zones. The first tread zone has a plurality of lugs and grooves, the grooves may extend across the entire first zone creating soil discharge channels. The soil dis... | 12/29/2009 |
| 7604148 | Device for reducing the tension on an elastomeric feed A method and device is provided for reducing the tension on an elastomeric feed strip. The method includes providing a device for engagement with the feed strip, pushing the feed strip forward by the device when the feed strip stops or when the tension exceeds a cer... | 10/20/2009 |
| 7575424 | Flexible molding device for manufacturing a sunken groove in a tire tread A mold and molding device for forming a sunken groove in a tire is provided. The molding device includes a thin flexible wire having a desired cross-sectional shape. The wire thickness can range from about 0.5 mm to about 5 mm. The flexible wire is preferably hypere... | 08/18/2009 |
| 7572120 | Tire mold The invention provides a segmented mold having a plurality of segments arranged to form an annular cavity to mold a tire. Each of the segments have an inner face for molding the tread, one or more channels, and one or more members received in each channel. The membe... | 08/11/2009 |
| 7566213 | Flexible enrobed molding device for manufacturing a sunken groove in a tire tread A mold and molding device for forming a sunken groove in a tire is provided. The molding device includes a thin flexible wire having one or more molded elastomer elements thereon. The flexible wire is preferably hyperelastic and the molded elastomer is preferably si... | 07/28/2009 |
| 7544054 | Flexible molding device for manufacturing a sunken groove in a tire tread A tire mold and a molding device for forming a sunken groove in a tire are provided. The molding device includes one or more rigid elements joined to a flexible member along an attachment point or line on the connecting surface of the rigid element. The flexible mem... | 06/09/2009 |
| 7544053 | Flexible molding device for manufacturing a sunken groove or surface tie bar in a tire tread A tire mold and a molding device for forming a sunken groove in a tire are provided. The molding device includes one or more rigid elements joined to a flexible member. The flexible member is formed from a flexible material, preferably a superalloy, or hyperelastic ... | 06/09/2009 |
| 7540730 | Tire mold A segmented mold comprising a plurality of segments is provided. The segments are arranged to form an annular cavity to mold a tire, the segments comprising an inner face for molding the tread, and an outer radial surface. The mold further includes a plurality of sl... | 06/02/2009 |
| 7524398 | Apparatus for making tire components, and a tire An apparatus for making a reinforced elastomeric fabric having a gauge thickness G and a cord spacing S, the apparatus comprising: a die having a plurality of holes for receiving a reinforcement cord, the holes providing a cord spacing of about S/2, a first and seco... | 04/28/2009 |
| 7524175 | Method and apparatus to vent a mold A method and apparatus for venting a mold for vulcanizing a tire is provided. The mold comprises a plurality of tread segments for forming the tread on a green tire, wherein each of said tread segments further comprises an outer cavity plate having an interior surfa... | 04/28/2009 |
| 7509987 | Tire with turned down ply construction A tire having an outside-in ply construction is provided which torques the tire bead into the rim of the wheel to which it is mounted. The tire has first and second axially-spaced bead cores, a carcass having at least one belt extending under a tread, and a first pl... | 03/31/2009 |
| 7507078 | Flexible molding device for molding a sunk groove, a sunk blade, and a large keyhole sipe in tire tread A tire mold and a molding device for forming a sunken groove, sipe in a tire is provided. The molding device molding device comprises a flexible member and a blade element, the flexible member having a distal end for mounting to a tire mold, a radiused midsection an... | 03/24/2009 |
| 7467652 | Three-dimensional tread sipes and mold blade for forming three-dimensional tread sipes Both a mold blade for forming sipes and the sipe so formed in a tire tread element have three-dimensional portions. In the formed sipe, the three-dimensional portion creates a constant interlocking of the opposing sipe faces. The blade and the sipe have two radially... | 12/23/2008 |
| 7467653 | Aircraft tire with improved high speed properties An aircraft tire having a folded belt construction and a belt edge strip over the folded belt construction has improved high speed properties. The belt edge strip substantially covers the top surface and/or the bottom surface of the folded belt in addition to the fo... | 12/23/2008 |
| 7458200 | High elongation cable A high elongation cable and a tire having a tread belt with an extensible reinforcing cable are provided. The high elongation cable has a 3×7×m or a 4×7×m construction, wherein m is comprised of at least two layers, wherein the outermost layer is comprised of a ... | 12/02/2008 |
| 7455002 | Method for cutting elastomeric materials and the article made by the method A method and apparatus is provided for cutting an elastomeric laminate that may include a layer of reinforcement cords, into a desired length without cutting through the cords. The method includes the step of cutting through the gum portion of the elastomeric compos... | 11/25/2008 |
| 7451792 | Tire support ring A run flat safety support ring intended to be mounted on a wheel rim inside a tire equipping a vehicle for supporting the tire tread in case of loss of inflation pressure has a generally cylindrical crown intended to come in contact with the interior of the tire tre... | 11/18/2008 |
| 7448422 | Pneumatic run-flat tire A pneumatic run-flat tire has a bead configuration wherein the axially inner end is radially inward of the axially outer end of the bead. The sidewall of the tire, from the bead region to the upper sidewall is reinforced to form a pillar support in the sidewall. The... | 11/11/2008 |
| 7431579 | Calender gap control A method and apparatus for a calendering system is provided to allow for fine gauge adjustment of the product. The calender system has a first and second roller each having a first and second end mounted in opposed end supports. The end supports each have an inlet a... | 10/07/2008 |
| 7406991 | Pneumatic tire with bead composite A run-flat tire has a radial carcass reinforcement ply extending through a pair of opposing sidewalls and anchored in opposing bead portions. At least one of the bead portions having a bead heel and a bead toe wherein the bead heel is radially outward and axially in... | 08/05/2008 |
| 7360571 | Pneumatic tire with composite belt structure A method of forming a composite belt structure for a tire is disclosed. The composite belt structure has cord reinforced layers including at least two radially outer zigzag belt layers. The cords per inch in the shoulder portion are greater than the cords per inch i... | 04/22/2008 |
| 7299841 | Two piece tire with improved tire tread belt A two-piece tire assembly with a removable tread belt for installing about the circumference of a tire carcass is provided. The two-piece tire assembly includes a tread belt comprised of two or more belt layers, each layer having one or more belts, wherein at least ... | 11/27/2007 |
| 7288160 | Method of making a tire using a high crown uni-stage tire building drum A tire building drum and a method of building a tire carcass is disclosed. The tire building drum has a center section comprised of a plurality of segments that are radially and axially movable. The building drum further comprises shoulder sections that are axially ... | 10/30/2007 |
