US3570574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansible belt for use in belted pneumatic tires
Assignee: Aerojet Rocketdyne Holdings Inc
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Filing: 1968-07-26
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Granted: 1971-03-16
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Expires: 1988-07-26
Abstract
Abstract Disclosed is a rubberized cord belt construction, for use in either a radial or bias ply tire, where mutually parallel alignments of discontinuous cord lengths replace the conventional parallel continuous cords and the elastomer of the belt contains uniformly dispersed, oriented, filaments. The cord alignments are disposed at a small angle relative to the crown of the tire. Because of the discontinuity of the cords, the belt may be expanded. Thus, tires employing these low-angle belts may be manufactured by presently existing tire-shaping equipment.
Inventors
- 👤 Leon F Marker
- 👤 Daniel A Meyer
- 👤 Henry Piotrowski
- 👤 Marvin A Deisz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:57
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/02; B60C9/12; B60C9/0042; B60C9/18; B60C9/1821; B60C9/20; B60C9/22
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
123 words
In a pneumatic tire having a circumferential belt assembly consisting of one or more plies of cord reinforcement embedded in an elastomeric matrix, the improvement wherein A. said cord reinforcement in each of said one or more plies consists essentially of 1. a layer of laterally spaced, substantially mutually parallel rows of aligned, discontinuous lengths of cord a. between about 1 to about 5 inches long, and b. the spaces between lengths of cord in one row are circumferentially offset with respect to spaces between lengths of cord in an adjacent row, and B. said matrix of each of said one or more plies contains 1. uniformly dispersed filaments oriented in a predetermined direction relative to said rows of discontinuous lengths of cord.
Claim 2
Dependent Claim
123 words
In a pneumatic tire having a circumferential belt assembly consisting of one or more plies of cord reinforcement embedded in an elastomeric matrix, the improvement wherein A. said cord reinforcement in each of said one or more plies consists essentially of 1. a layer of laterally spaced, substantially mutually parallel rows of aligned, discontinuous lengths of cord a. between about 1 to about 5 inches long, and b. the spaces between lengths of cord in one row are circumferentially offset with respect to spaces between lengths of cord in an adjacent row, and B. said matrix of each of said one or more plies contains 1. uniformly dispersed filaments oriented in a predetermined direction relative to said rows of discontinuous lengths of cord.
Claim 3
Dependent Claim
32 words
The improvement as defined in claim 1, further characterized in that said filaments in each elastomeric matrix are oriented in a direction substantially parallel to said rows of discontinuous lengths of cord.
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |