Patent US4271330A successfully refreshed from Google Patents.
Patent US3620279A successfully refreshed from Google Patents.
US3620279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic tires
Assignee: Orszagos Gumiipari Vallalat
•
Filing: 1969-07-15
•
Granted: 1971-11-16
•
Expires: 1989-07-15
Abstract
Abstract In order to improve diagonal-ply tires one or more zone plies which do not extend further than the limit of the flexible zone, are employed together with cord elements with certain limits of the cord angle which are determined by the shaping angle and by the direction of the cord elements.
Inventors
- 👤 Zoltan Bartha
- 👤 Laszlo Vad
- 👤 Imre Biro
- 👤 Otto Farkas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:06
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: 4
Claim 1
Independent Claim
171 words
In a pneumatic tire carcass having a crown zone portion, end beads, and a flexing zone portion therebetween, which carcass comprises a plurality of overlapping plies that extend from tire bead to tire bead, and cord elements in successive plies crossing each other and disposed at an acute angle with respect to the centerline of the crown zone portion, the improvement comprising at least one additional pair of plies disposed between pairs of adjacent overlapping plies in the portion of the carcass which is below the crown zone portion, the side edges of said additional pair of plies extending no further than to the limit of the flexing zone portion, the plies of said additional pair of plies being in direct contact with each other along the entire facing surfaces thereof and having cord elements disposed in a direction forming an acute angle of between 30* to 46* with respect to the center line of the crown zone, and said cord elements in said additional pair of plies crossing each other.
Claim 2
Dependent Claim
171 words
In a pneumatic tire carcass having a crown zone portion, end beads, and a flexing zone portion therebetween, which carcass comprises a plurality of overlapping plies that extend from tire bead to tire bead, and cord elements in successive plies crossing each other and disposed at an acute angle with respect to the centerline of the crown zone portion, the improvement comprising at least one additional pair of plies disposed between pairs of adjacent overlapping plies in the portion of the carcass which is below the crown zone portion, the side edges of said additional pair of plies extending no further than to the limit of the flexing zone portion, the plies of said additional pair of plies being in direct contact with each other along the entire facing surfaces thereof and having cord elements disposed in a direction forming an acute angle of between 30* to 46* with respect to the center line of the crown zone, and said cord elements in said additional pair of plies crossing each other.
Claim 3
Dependent Claim
21 words
The improvement as in claim 1, wherein said additional pair of plies is disposed between a pair of adjacent overlapping plies.
Claim 4
Dependent Claim
24 words
The improvement as in claim 1, wherein said additional pair of plies is disposed between at least two pairs of the adjacent overlappiNg plies.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |