# US 7,344,614 B2 · Tire breaker strip application method and tire fabricated therefrom

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- Number: US 7,344,614 B2
- Document ID: US7344614B2
- Status: Granted
- Kind: B2
- Application number: 10/978,508
- Filed: 2004-11-01
- Published: 2006-05-04
- Granted: 2008-03-18
- Earliest claimed: 2004-11-01
- Assignees: The Goodyear Tire & Rubber Company
- Inventors: Albert James Yovichin; Andres Ignacio Delgado; Mary Beth Dombrosky; Mark Anthony Sieverding
- Web page: https://patentgrep.com/patent/US7344614B2

## CPC

- B60C 9/20: built-up from rubberised plies each having all cords arranged substantially parallel
- B29D 30/1657: {by feeding cut-to-length pieces in a direction inclined with respect to the core axis and placing the pieces side-by-side to form an annular element}
- B29D 30/70: Annular breakers
- B29D 2030/1692: {Changing the orientation of the layers, e.g. plies, to be applied}
- Y10T 152/10765: Characterized by belt or breaker structure
- Y10T 152/10783: Reinforcing plies made up from wound narrow ribbons
- B60C: VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B29D: PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE (making granules B29B9/00; making preforms B29B11/00)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A method for applying a breaker or other reinforcement layer to a carcass strip by strip includes the steps of calculating an end gap based upon a nominal strip width, the size of the carcass, and the end count desired; calculating a distributed gap required to distribute the calculated end gap substantially equally between each strip; and applying the breaker strip by strip with each strip being separated from an adjacent strip by the distributed gap spacing.

## Claims

### Claim 1

A method for constructing a tire breaker reinforcement layer strip by strip comprising the steps:
a. calculating a circumferential end gap resulting from an abutting side to side attachment of breaker strips about the circumference of a carcass, the calculation being based upon a nominal strip width, the circumferential size of the breaker layer on the carcass, and the end count desired, and wherein the end gap is less than a width of a breaker strip;
b. calculating a distributed gap spacing required to distribute the calculated end gap substantially equally between each strip, wherein individual gaps between the strips aggregate to the calculated end gap; and
c. constructing the breaker strip by strip with each strip being separated from an adjacent strip by the distributed gap spacing.

### Claim 2 (depends on 1)

A method according to claim 1, wherein the strips are applied to a tire carcass.

### Claim 3 (depends on 2)

A method according to claim 2, wherein the strips are applied at an angle with respect to an equatorial plane of the tire carcass.

### Claim 4 (depends on 1)

A method according to claim 1, wherein the strips are applied to a drum.

### Claim 5 (depends on 4)

A method according to claim 4, wherein the strips are applied at an angle with respect to an equatorial plane of the drum.

### Claim 6 (depends on 1)

A method according to claim 1, further comprising the step of utilizing the strips in the construction of a tire breaker of a different sized tire by:
d. re-calculating an end gap based upon a nominal strip width, the circumferential size of the tire breaker, and the end count desired for the different sized tire, wherein the recalculated end gap is less than a width of a breaker strip;
e. re-calculating a distributed gap required to distribute the calculated end gap substantially equally between each strip for the different sized tire, wherein individual gaps between the strips aggregate to the re-calculated end gap; and
f. attaching the breaker strip by strip with each strip being separated from an adjacent strip by the re-calculated distributed gap spacing.

### Claim 7

A method for constructing a tire breaker reinforcement layer strip by strip comprising the steps:
a. calculating a circumferential end gap resulting from an abutting side to side attachment of breaker strips about the circumference of a carcass wherein the end gap is less than a width of a breaker strip, each breaker strip having at least one cord member and each breaker strip having a transverse width greater than the width of the one cord member, the calculation being based upon a nominal strip width, the circumferential size of the breaker layer on the carcass, and the end count desired;
b. calculating a distributed gap spacing required to distribute the calculated end gap substantially equally between each strip wherein individual gaps between the strips aggregate to the calculated end gap; and
c. constructing the breaker strip by strip with each strip being separated from an adjacent strip by the distributed gap spacing.

### Claim 8 (depends on 7)

A method according to claim 7, wherein the strips are applied to a tire carcass.

### Claim 9 (depends on 8)

A method according to claim 8, wherein the strips are applied at an angle with respect to an equatorial plane of the tire carcass.

### Claim 10 (depends on 7)

A method according to claim 7, wherein the strips are applied to a drum.

### Claim 11 (depends on 10)

A method according to claim 10, wherein the strips are applied at an angle with respect to an equatorial plane of the drum.