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US 12,103,337 B2Granted
Tire with carcass ply having conductive thread sewn portion
AssigneeBridgestone Corporation
InventorKazuyuki Fukuzawa
Life of this patent
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Abstract
One aspect of the tire of the present invention is a tire including a tread portion (11), a sidewall portion (12), a bead portion (13), a bead core (60) provided in the bead portion (13), and a carcass ply (51) covering at least a portion around the bead core (60), in which the carcass ply (51) includes a sewn portion (80) in which a conductive thread (81, 82) is sewn.
Claims5
A tire comprising:
- a tread portion;
- a sidewall portion on each side of a tire equatorial portion;
- a bead portion on each side of the tire equatorial portion;
- a bead core provided in each bead portion;
- a carcass ply covering at least a portion around each bead core,
- wherein the carcass ply includes on each side of the tire equatorial portion a sewn portion in which a conductive thread is sewn,
- at least one conductive portion extending along the carcass ply and located outside the carcass ply in a tire radial direction in the tread portion;
- and
- a chafer portion having conductivity and covering at least a portion around the carcass ply on each side of the tire equatorial portion,
- wherein the respective sewn portion is sewn through the carcass ply, and includes a first seam portion which is in contact with the respective chafer portion and a second seam portion which is in contact with the at least one conductive portion,
- wherein the volume resistivity of the at least one conductive portion is smaller than the volume resistivity of the respective chafer portion,
- wherein each conductive portion is a thread containing metal, and the at least one conductive portion is a plurality of conductive portions provided at intervals along a tire circumferential direction, and
- wherein each sewn portion extends along the tire circumferential direction.
10 more elements
Dependencies are inferred from the claim text.