	US 12,269,299 B2
	Method of making a tire with multiple body plies
Kevin J. Kosmac, Fairlawn, OH (US); Austin J. Fischer, Akron, OH (US); and William H. Durivage, Akron, OH (US)
Assigned to Bridgestone Americas Tire Operations, LLC, Nashville, TN (US)
Filed by Bridgestone Americas Tire Operations, LLC, Nashville, TN (US)
Filed on Oct. 30, 2023, as Appl. No. 18/385,108.
Application 18/385,108 is a division of application No. 17/003,332, filed on Aug. 26, 2020, granted, now 11,833,861.
Claims priority of provisional application 62/892,348, filed on Aug. 27, 2019.
Prior Publication US 2024/0059104 A1, Feb. 22, 2024
Int. Cl. B29D 30/16 (2006.01); B60C 9/00 (2006.01); B60C 9/02 (2006.01); B60C 9/18 (2006.01); B60C 9/22 (2006.01); B60C 15/00 (2006.01)

CPC B60C 15/0027 (2013.01) [B29D 30/16 (2013.01); B60C 9/02 (2013.01); B60C 9/185 (2013.01); B60C 9/22 (2013.01); B60C 15/0009 (2013.01); B60C 15/0018 (2013.01); B60C 15/0036 (2013.01); B60C 15/0072 (2013.01)]

15 Claims

1. A method of making a tire, the method comprising:

providing a first body ply having a first width;

laying a second body ply above the first body ply, the second body ply having a second width less than the first width;

laying a third body ply above the second body ply, the third body ply having a third width greater than the first width;

laying a first bead at a first location above the third body ply;

laying a second bead at a second location above the third body ply;

laying a first stabilizer ply insert at a third location above the third body ply, the third location being between the first location and the second location;

laying a second stabilizer ply insert at a fourth location above the third body ply, the fourth location being between the third location and the second location;

wrapping the first body ply, the second body ply, and the third body ply around the first bead, such that the first body ply has a first turn up portion with a first turn up height, the second body ply has a second turn up portion with a second turn up height less than the first turn up height, and the third body ply has a third turn up portion with a third turn up height greater than the first turn up height, and such that the third turn up portion contacts the first stabilizer ply insert; and

wrapping the first body ply, the second body ply, and the third body ply around the second bead, such that the first body ply has a fourth turn up portion with a fourth turn up height, the second body ply has a fifth turn up portion with a fifth turn up height less than the fourth turn up height, and the third body ply has a sixth turn up portion with a sixth turn up height greater than the fourth turn up height, and such that the sixth turn up portion contacts the second stabilizer ply insert.

7. A method of making a tire, the method comprising:

providing a first annular bead and a second annular bead;

providing at least three body plies, including a first body ply, a second body ply, and a third body ply;

extending each of the at least three body plies between the first annular bead and the second annular bead, including:

extending the first body ply downward, axially inside of the first annular bead and wrapping the first body ply around the first annular bead, such that the first body ply has a first turn up portion that extends upward, axially outside of the first annular bead, and such that the first turn up portion terminates at a first turn up end,

extending the second body ply downward, axially inside of the first annular bead and axially outside of the first body ply and wrapping the second body ply around the first annular bead, such that the second body ply has a second turn up portion that extends upward, axially outside of the first annular bead and axially inside the first turn up portion, and such that the second turn up portion terminates at a second turn up end that is radially lower than the first turn up end, and

extending the third body ply downward, axially inside of the first annular bead and axially outside of the second body ply and wrapping the third body ply around the first annular bead, such that the third body ply has a third turn up portion that extends upward, axially outside of the first annular bead and axially inside the second turn up portion, and such that the third turn up portion terminates at a third turn up end that is radially higher than the first turn up end;

placing a circumferential belt radially above the at least three body plies, such that the circumferential belt extends axially across a portion of the at least three body plies;

placing a circumferential tread radially above the circumferential belt;

placing a first stabilizer ply insert such that a first end of the first stabilizer ply insert is axially inside a first end of the circumferential belt and radially below the circumferential belt, and such that a second end of the first stabilizer ply insert is axially outside of the first end of the circumferential belt and radially lower than the third turn up end;

placing a second stabilizer ply insert such that a first end of the second stabilizer ply insert is axially inside a second end of the circumferential belt and radially below the circumferential belt, and such that a second end of the second stabilizer ply insert is axially outside of the second end of the circumferential belt;

extending a first sidewall between the first annular bead and the circumferential tread; and

extending a second sidewall between the second annular bead and the circumferential tread.