IP Library Granted Patent US 9,227,467
Granted Patent B2
US 9,227,467 · App. 13/947,185 · Granted Jan 5, 2016

Pneumatic tire

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Quick Facts
Patent No.
US 9,227,467
App. No.
13/947,185
Granted
Jan 5, 2016
Kind
B2
Abstract

This invention pertains to a tire comprising at least one carcass ply and at least one breaker ply, the carcass and breaker plies each comprising continuous filaments having a tenacity of at least 15 grams force per dtex and a modulus of at least 400 grams force per dtex wherein the carcass ply turn-ups terminate under the at least one breaker ply. The invention further pertains to a tire comprising a plurality of apex components and carcass ply turn-ups that terminate within the apex region of the tire. The invention also discloses a tire wherein the carcass ply turn-ups terminate in the upper sidewall region of the tire and ply spacers are located between ply-turn-ups.

Claims (8)

1. A tire comprising a bead, a first, second and third carcass ply, each ply comprising continuous filaments having a tenacity of at least 15 grams force per dtex and a modulus of at least 400 grams force per dtex wherein turn-ups of the first and second carcass plies terminate within a tire apex region and wherein

(i) a first apex component is positioned between the bead, the second carcass ply and the second carcass ply turn-up,

(ii) a second apex component is positioned between the second carcass ply turn-up, the second carcass ply and the first carcass ply turn-up,

(iii) a third apex component is positioned between the first carcass ply turn-up, the second carcass ply and the third carcass ply, and

(iv) the first, second and third apex components comprise an elastomeric compound having a modulus in the range of from 3 to 50 MPa.

2. The tire of claim 1 , wherein the continuous filaments are metallic or polymeric.

3. The tire of claim 2 , wherein the polymer of the continuous filament is aromatic polyamide, aromatic co-polyamide, aliphatic polyamide or polyester.

4. The tire of claim 3 , wherein the aromatic polyamide is p-aramid.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 25, 2019
From: E. I. DU PONT DE NEMOURS AND COMPANY
To: DUPONT SAFETY & CONSTRUCTION, INC.
Reel/Frame 049582/0514 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 21, 2013
From: LAMONTIA, MARK ALLAN; COULTER, WILLIAM HERBERT; MCNEIL, MONTY C; VISWANATHAN, HARISH
To: E. I. DU PONT DE NEMOURS AND COMPANY
Reel/Frame 031645/0277 →