Resilient tires and wheels – Tires – resilient – Pneumatic tire or inner tube
Reexamination Certificate
1999-05-19
2001-07-31
Knable, Geoffrey L. (Department: 1733)
Resilient tires and wheels
Tires, resilient
Pneumatic tire or inner tube
C152S551000, C152S554000, C152S561000
Reexamination Certificate
active
06267166
ABSTRACT:
The present invention relates to pneumatic tires and particularly to radial tires with an asymmetric carcass construction. More particularly it relates to such a tire with improved handling properties.
Conventional radial tires of symmetric construction use the same reinforcements in either sidewall. To provide good handling properties tires have become progressively stiffer. It is also conventionally considered that the sidewall primarily affecting handling when the tire is fitted to a vehicle is the sidewall which is outboard of the vehicle.
Tires having stiff sidewalls on the outboard and softer or more flexible sidewalls on the inboard when fitted to the vehicle have been suggested to give good handling and in combination good comfort. Some such tires however have not been successful and all tires having stiff outboard sidewalls giving good handling are prone to uneven wear particularly in mixed use.
It is an object of the present invention to overcome the above problem and provide a tire having good handling and even wear.
According to the present invention a pneumatic tire having an inboard sidewall and an outboard sidewall for fitting to a vehicle comprises a reinforced carcass extending between bead regions through both inboard and outboard sidewalls and a tread region reinforced by a breaker reinforcement extending between the tread edges beneath the rubber tread wherein the carcass in the outboard sidewall comprises a single ply of reinforced material having mutually parallel reinforcement cords extending substantially radially of the tire, the ply having one edge located under the breaker, extending from the breaker package radially inwards through the outboard sidewall and being wrapped axially outwards around the bead hoop and being turned up to have its second edge radially outwards of the bead hoop and the carcass reinforcement for the inboard sidewall comprises a single ply of reinforcement material arranged with a first edge under and in overlapping engagement with the edge region of the outboard sidewall reinforcement adjacent to the inboard bead, the single ply extending radially inwards and being wrapped around the inboard bead from inside to outside and extending radially outwards through the inboard sidewall to a point adjacent to the inboard breaker edge radially under said breaker and radially over the outboard sidewall ply in overlapping arrangement therewith.
REFERENCES:
patent: 3286758 (1966-11-01), Svereckis et al.
patent: 3339610 (1967-09-01), Fausti et al.
patent: 3506052 (1970-04-01), Wittneben
Dunlop Tire Corporation
Knable Geoffrey L.
LandOfFree
Radial tire with asymmetric construction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Radial tire with asymmetric construction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radial tire with asymmetric construction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2527889