US3685564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tire
Assignee: Individual
•
Filing: 1969-11-17
•
Granted: 1972-08-22
•
Expires: 1989-11-17
Abstract
Abstract A bias-ply pneumatic tire having breaker plies disposed beneath the tread and interleaved among the carcass plies and having special cord angle relationships among the several plies to provide a stiff tread area and flexible sidewall areas. The foregoing abstract is not to be taken as limiting the invention of this application, and in order to understand the full nature and extent of the technical disclosure of this application, reference must be made to the accompanying drawings and the following detailed description. This invention relates to pneumatic tires and in particular to tires having a bias-ply carcass reinforced with breakers or the like in the tread area. It is an object of this invention to provide a pneumatic tire having a stiff tread area and increased flexibility in the sidewall areas. It is a further object of this invention to provide a tire having improved skid resistance and tread wear, good riding qualities and improved durability and strength.
Inventors
- 👤 John C Smithkey Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:09
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C9/28; Y; Y10; Y10S; Y10S152/00; Y10S152/19; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
136 words
A bias ply pneumatic tire having a pair of beads, a carcass extending circumferentially of said tire and from bead to bead, a tread portion disposed circumferentially about said carcass, and means including said carcass providing a pair of sidewall portions each having a flex area, said carcass having cord reinforcing layers comprising bias carcass plies extending circumferentially of said tire and from bead to bead and at least one breaker ply extending circumferentially of said tire and disposed beneath said tread, said reinforcing layers being arranged such that the ratio of the percent of interfaces between reinforcing layers in the breaker area that have cords crossed on opposite sides thereof to the percent of interfaces between the reinforcing layers in the flex areas that have cords crossed on opposite sides thereof is at least 1.5.
Claim 2
Dependent Claim
136 words
A bias ply pneumatic tire having a pair of beads, a carcass extending circumferentially of said tire and from bead to bead, a tread portion disposed circumferentially about said carcass, and means including said carcass providing a pair of sidewall portions each having a flex area, said carcass having cord reinforcing layers comprising bias carcass plies extending circumferentially of said tire and from bead to bead and at least one breaker ply extending circumferentially of said tire and disposed beneath said tread, said reinforcing layers being arranged such that the ratio of the percent of interfaces between reinforcing layers in the breaker area that have cords crossed on opposite sides thereof to the percent of interfaces between the reinforcing layers in the flex areas that have cords crossed on opposite sides thereof is at least 1.5.
Claim 3
Dependent Claim
19 words
A tire as claimed in claim 1 wherein all of said breaker plies are disposed between said carcass plies.
Claim 4
Dependent Claim
32 words
A tire as claimed in claim 1 wherein there are a plurality of breaker plies and at least one said breaker ply is located radially inwardly of the radially outermost carcass ply.
Claim 5
Dependent Claim
21 words
A tire as claimed in claim 3 wherein not more than one breaker ply is located between any two carcass plies.
Claim 6
Dependent Claim
26 words
A tire as claimed in claim 1 wherein all of the interfaces between reinforcing layers in the breaker area have cords crossed on opposite sides thereof.
Claim 7
Dependent Claim
60 words
A tire as claimed in claim 1 wherein the alternate interfaces between the reinforcing layers in said flex areas have cords crossed on opposite sides thereof, the remaining interfaces between reinforcing layers in said flex area have their cords parallel on opposite sides thereof and a breaker ply is located between each two carcass plies which have their cords parallel.
Claim 8
Dependent Claim
19 words
A tire as claimed in claim 2 wherein not more than one breaker is located between any two plies.
Claim 9
Dependent Claim
24 words
A tire as claimed in claim 7 wherein all interfaces between reinforcing layers in the tread area have cords crossed on opposite sides thEreof.
References Cited (Backward Citations)
US2225042A
Cited
US2348350A
Cited
DE869603C
Cited
US2976905A
Cited
US3205931A
Cited
US3525377A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |