Abstract: A pneumatic race tire has an elastomeric casing with a tread in the crown portion thereof, a pair of bead areas and a body ply carcass extending continuously between the bead areas and through the sidewalls and crown portion. A continuous thin annular band formed of a high strength, lightweight material such as metal, fiberglass, a composite material or the like is located radially inwardly of the tread and between the tread and body ply carcass to enhance tire performance by reducing the thickness of the tread area.
Type:
Grant
Filed:
August 3, 1999
Date of Patent:
July 17, 2001
Assignee:
Bridgestone/Firestone Research, Inc.
Inventors:
Charles D. Spragg, Gregory D. Chaplin, Dale R. Harrigle, Jr., James M. Kirby
Abstract: A spacer for an air spring assembly includes a substantially cylindrical body having a substantially planar mounting surface. The body includes a central hub, an outer rim, and a plurality of structural arms connecting the outer rim to the central hub. The central hub includes a pair of concentric hub walls with a plurality of spoke ribs disposed between the hub walls. The outer rim includes an annular groove in its upper surface as well as a plurality of support ribs. Each of the structural arms has a T-shaped cross section. The spacer has five bolt holes that are configured to work with a single center mount, two point, three point, or a four point mounting pattern. The spacer is fabricated from a non-metallic material such as a high strength, lightweight plastic or fiber reinforced plastic.
Type:
Grant
Filed:
March 30, 1999
Date of Patent:
June 26, 2001
Assignee:
Bridgestone/Firestone, Inc.
Inventors:
Paul P. Koeske, Mohamad Taghizadeh, Pradipta N. Moulik, Todd M. Ziems, Andreas Peickert
Abstract: A method for preparing an innerliner of a pneumatic tire and adhering an electronic monitoring device to the innerliner includes the step of providing a patch having a cover and a layer of uncured rubber. The patch is placed at a selected area of the innerliner of a green tire before the green tire is cured. At least a portion of the patch is removed after the tire is cured to provide a prepared area at the selected area of the tire. The electronic monitoring device is then adhered to the prepared area.
Type:
Grant
Filed:
December 4, 1998
Date of Patent:
June 12, 2001
Assignee:
Bridgestone/Firestone Research, Inc.
Inventors:
Russell W. Koch, Paul B. Wilson, Michelle R. Stalnaker
Abstract: A vibration damper for mounting on a structure for damping out resonance frequencies on the structure has a bushing assembly consisting of inner and outer coaxial spaced metal sleeves joined together by an intervening elastomeric member. A metal mass is secured to the outer metal sleeve of the bushing assembly and oscillates about the fixed inner sleeve upon flexing of the elastomeric member. A fastener extends through the bore of the inner sleeve for rotatably suspending the damper on the structure. An extension arm is secured to the inner sleeve and extends radially outwardly and passes between a pair of nubs formed on an outer annulus of the elastomeric member to prevent excessive rotation and erratic motion of the mass due to non-translational forces on the structure.
Abstract: An air actuator has a rigid piston at one end and a rigid housing and end cap at the other end with an intervening elastomeric flexible sleeve extending therebetween which forms a fluid pressure chamber. The rigid piston, elastomeric flexible sleeve, and rigid housing are all injection or blow molded as one integral piece of preferably a thermoplastic elastomer, while the end cap is injection or blow molded as a second integral piece of preferably a thermoplastic elastomer that is thereafter welded to the rigid housing to define an internal chamber that is pressurizable. The first piece consisting of the piston, flexible membrane and housing, is configured such that the walls of the housing and piston are thick and rigid while the walls of the flexible membrane are thin and thus flexible, thereby allowing the membrane to roll and bend such that the piston may axially move in relation to the housing.
Type:
Grant
Filed:
May 1, 1998
Date of Patent:
March 13, 2001
Assignee:
Bridgestone/Firestone, Inc.
Inventors:
Daniel J. Leonard, Keith E. Hoffman, Joseph L. Tazewell
Abstract: A mold for a pneumatic tire includes a plurality of mold sections that cooperate to form an annular mold. Each of the mold sections has a body with an inner surface. The body defines at least one longitudinal groove that opens at the inner surface. The body defines at least one longitudinal groove that opens at the inner surface. The groove has a mouth and a body with the width of the mouth being smaller than at least the largest width of the body. In one embodiment of the invention, the groove has a female dovetail cross section. The grooves in the mold sections cooperate to form a continuous, 360 degree groove about the tire mold. A plurality of die ribs are slidingly disposed in the grooves. Each die rib has a base that corresponds with the cross section of the groove. Thus, the die rib in the above-embodiment has a male dovetail cross section that is configured to slide within the groove.
Type:
Grant
Filed:
March 15, 1999
Date of Patent:
March 6, 2001
Assignee:
Bridgestone/Firestone Research, Inc.
Inventors:
Richard E. Coleman, William A. Glasenapp
Abstract: A method and apparatus for connecting an electronic monitoring device to a pneumatic tire includes the steps of providing a green tire and attaching the electronic monitoring package to an anchoring patch. The anchoring patch having the electronic monitoring package is then mounted to the green tire and cured during the green tire cure process. A battery is then provided and a direct electrical connection between the electronic monitoring package and battery is then formed by plugging the battery into the electronic monitoring package. The electronic monitoring package may also be mounted in the green tire itself and cured with the green tire. The battery is connected to the electronic monitoring package after the cure process.
Abstract: An antistatic tire and relative production method, whereby a portion of a tread made of an electrically insulating mix is hollowed out and filled with a cement (C) in the form of a carbon black mix in a volatile liquid; the carbon black mix being left inside the hollow portion when the volatile liquid evaporates, and defining inside the tread at least one conducting body communicating with a rolling surface of the tire.
Abstract: A vibration damping device for mounting between two spaced portions of a vehicle for absorbing road forces exerted on the vehicle. An inner metal cylindrical housing forms an internal piston chamber and is connected at one end to one portion of the vehicle, with the outer end of the rod of a piston which is slidably mounted within the piston chamber, being connected to the other portion of the vehicle. An outer housing surrounds a portion of the inner housing and forms a fluid transfer duct between fluid chambers formed on opposite sides of the piston within the piston chamber. A plurality of spaced metal electrode bands are mounted on an inner surface of the outer housing and are electrically isolated therefrom and communicate with the fluid transfer duct for applying voltages across the duct to affect the viscosity of an electrorheological (ER) fluid flowing therethrough to increase the damping force of the device.