Integrated circuit transponder in a pneumatic tire for tire identification
First Claim
1. In combination, a pneumatic tire and an integrated circuit transponder located within the structure of the tire, the pneumatic tire having spaced beads including annular tensile members of wound or cabled steel wire, the tire having a plurality of plies at least one of which is a continuous ply extending between the annular tensile member, ends of the continuous play being turned axially and radially outwardly about the annular tensile members, the transponder having separate first and second electrodes and being able to transmit an electrical signal after an oscillating electric field of sufficient intensity is applied between the first and second electrodes of the transponder, the average spacing of the surface of the first electrode of the transponder from the steel wire in a component of the tire selected from the group consisting of the plies and the annular tensile members being substantially less than the average spacing of the surface of the second electrode of the transponder from the steel wire in such component ply or annular tensile member, the transponder within the tire structure being capable of transmitting the electrical signal in response to an oscillating electric field emanating from a source spaced from the tire and located radially away from the tread surface, and the transponder being capable of transmitting the electrical signal from the tire both prior to and after its vulcanization.
1 Assignment
0 Petitions
Accused Products
Abstract
A combination pneumatic tire and integrated circuit transponder for tire identification. The transponder is located within the tire structure and is capable of transmitting an identifying digital signal in response to interrogation by an R/F electric field emanating from outside the tire. The transponder then transmits the identifying signal, which is received, conditioned and demodulated. The tire has a steel-reinforced component, such as an annular tensile member in its bead or a steel-reinforced ply. The transponder has first and second electrodes, the first of which is positioned such that the average spacing of this first electrode'"'"'s surface from one of the steel-reinforced tire components is substantially less than the average spacing of the second electrode'"'"'s surface from such component. The transponder is capable of transmitting the electrical signal from the tire both prior to and after its valcanization, thus permitting identification and control of the tire during its manufacture and after its distribution and use.
196 Citations
25 Claims
- 1. In combination, a pneumatic tire and an integrated circuit transponder located within the structure of the tire, the pneumatic tire having spaced beads including annular tensile members of wound or cabled steel wire, the tire having a plurality of plies at least one of which is a continuous ply extending between the annular tensile member, ends of the continuous play being turned axially and radially outwardly about the annular tensile members, the transponder having separate first and second electrodes and being able to transmit an electrical signal after an oscillating electric field of sufficient intensity is applied between the first and second electrodes of the transponder, the average spacing of the surface of the first electrode of the transponder from the steel wire in a component of the tire selected from the group consisting of the plies and the annular tensile members being substantially less than the average spacing of the surface of the second electrode of the transponder from the steel wire in such component ply or annular tensile member, the transponder within the tire structure being capable of transmitting the electrical signal in response to an oscillating electric field emanating from a source spaced from the tire and located radially away from the tread surface, and the transponder being capable of transmitting the electrical signal from the tire both prior to and after its vulcanization.
Specification