US3598165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tires with reinforced breaker assembly
Assignee: Dunlop Co Ltd
•
Filing: 1968-07-15
•
Granted: 1971-08-10
•
Expires: 1988-07-15
Abstract
Abstract A pneumatic tire comprising a carcass, a breaker assembly, and a reinforcement layer disposed in each shoulder region of the tire in directly overlapping relationship with said carcass and an edge of the breaker assembly such as to reduce the possibility of separation of the layers of the breaker assembly of which the following is a specification.
Inventors
- 👤 Jean Hanus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:03
CPC Classifications
B; B60; B60C; B60C15/00; B60C15/0009; B60C15/0036; B60C9/00; B60C9/18; B60C9/28; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765; Y10T152/10774; Y10T152/10792
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
155 words
A pneumatic tire comprising a carcass reinforcement, a breaker assembly disposed radially outwardly of said carcass reinforcement in the crown region of the tire and at least one shoulder reinforcement layer of rubberized filamentary fabric disposed on each side of the midcircumferential plane of the tire, substantially radially inwardly of each shoulder region of the tire, said reinforcement layers being disposed radially outwardly of both a portion of the carcass reinforcement and an axially outer region of the breaker assembly and being arranged in overlapping relationship with the radially outermost surface of said axially outer region of the breaker assembly and in directly overlapping relationship with said portion of the carcass reinforcement each annular zone substantially bounded by each diverging shoulder reinforcement layer and its normal projection onto the carcass accommodating a rubber or rubberlike composition of a hardness and modulus greater than that of the rubber or rubberlike material in regions adjacent said zone.
Claim 2
Dependent Claim
155 words
A pneumatic tire comprising a carcass reinforcement, a breaker assembly disposed radially outwardly of said carcass reinforcement in the crown region of the tire and at least one shoulder reinforcement layer of rubberized filamentary fabric disposed on each side of the midcircumferential plane of the tire, substantially radially inwardly of each shoulder region of the tire, said reinforcement layers being disposed radially outwardly of both a portion of the carcass reinforcement and an axially outer region of the breaker assembly and being arranged in overlapping relationship with the radially outermost surface of said axially outer region of the breaker assembly and in directly overlapping relationship with said portion of the carcass reinforcement each annular zone substantially bounded by each diverging shoulder reinforcement layer and its normal projection onto the carcass accommodating a rubber or rubberlike composition of a hardness and modulus greater than that of the rubber or rubberlike material in regions adjacent said zone.
Claim 3
Dependent Claim
26 words
A pneumatic tire according to claim 1 wherein each said shoulder reinforcement layer is integral with a carcass reinforcement ply, and comprises the turnup portion thereof.
Claim 4
Dependent Claim
37 words
A pneumatic tire according to claim 1 wherein each shoulder reinforcement layer is a separate component from the carcass ply and comprises a layer of rubberized parallel nylon, rayon, polyester, metal or glass fiber filament or cords.
Claim 5
Dependent Claim
39 words
A pneumatic tire according to claim 1 wherein the cords of the carcass reinforcement and the cords or filaments of each shoulder reinforcement layer are parallel and are inclined substantially at 90* to the midcircumferential plane of the tire.
Claim 6
Dependent Claim
66 words
A pneumatic tire according to claim 3 wherein the carcass reinforcement cords are disposed substantially at 90* to the midcircumferential plane of the tire and at least two shoulder reinforcement layers are provided in each shoulder of the tire, the cords of successive layers being inclined at substantially equal and opposite angles lying between 0* and 30* with respect to a circumferential plane of the tire.
Claim 7
Dependent Claim
47 words
A pneumatic tire according to claim 1 wherein the extent to which each shoulder reinforcement layer overlaps the axially outer region of the breaker assembly is substantially less than one-third of the axial width of the breaker assembly measured along the curved surface of the breaker assembly.
Claim 8
Dependent Claim
35 words
A pneumatic tire according to claim 6 wherein the extent of said overlap is substantially equal to one-fifth of the axial width of the breaker assembly measured along the curved surface of the breaker assembly.
Claim 9
Dependent Claim
36 words
A pneumatic tire according to claim 1 wherein at least one shoulder reinforcement layer diverges radially outwardly from the carcass to embrace therewith at the radially outermost end an axially outer edge of the breaker assembly.
Claim 10
Dependent Claim
53 words
A pneumatic tire according to claim 8 wherein the point at which the divergence of the reinforcement layer and the carcass commences is not greater than three-fourths of the radial distance between the neutral plane of the tire and the peak of the crown portion of the tread measured from the said plane.
Claim 11
Dependent Claim
55 words
A pneumatic tire according to claim 9 wherein the distance of said point at which the divergence of the said reinforced layer and the carcass commences from the neutral plane of the tire is not less than one-fifth of the distance of the peak of the crown portion of the tread from the said plane.
Claim 12
Dependent Claim
32 words
A pneumatic tire according to claim 8 wherein the lengths over which each of the shoulder reinforcement layers on each side of the tire directly overlap the carcass reinforcement are not equal.
Claim 13
Dependent Claim
33 words
A pneumatic tire according to claim 1 wherein said annular zone accommodates at least two layers of rubber or rubberlike composition at least two layers of which are of different hardness or modulus.
Claim 14
Dependent Claim
37 words
A pneumatic tire according to claim 12 wherein the layers of rubber or rubberlike material adjacent the carcass reinforcement and shoulder reinforcement are of a composition of greater hardness and modulus than any intermediate layer or layers.
References Cited (Backward Citations)
US1181540A
Cited
US2786507A
Cited
US2960139A
Cited
US3052275A
Cited
GB958051A
Cited
US3050098A
Cited
US3085616A
Cited
GB973944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |