Patent US3224481A successfully refreshed from Google Patents.
US3224481A
Expired / Lapsed
US
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Tread rings for removable-tread tires
Assignee: Pirelli and C SpA
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Filing: 1963-09-23
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Granted: 1965-12-21
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Expires: 1983-09-23
Abstract
No abstract record available.
Inventors
- 👤 Lugli Giuseppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:52
CPC Classifications
B; B60; B60C; B60C9/00; B60C9/18; B60C9/20; B60C11/00; B60C11/02; Y; Y10; Y10T; Y10T152/00; Y10T152/10; Y10T152/10495; Y10T152/10765; Y10T152/10801
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
IN A REPLACEABLE TREAD RING ADAPTED TO BE DETACHABLY MOUNTED UPON THE CARCASS OF A PNEUMATIC TIRE, A REINFORCEMENT CONSISTING OF A PLURALITY OF CONTINUOUS INEXTENSIBLE CORDS, EACH OF SAID INEXTEISIBLE CORDS BEING DISPOSED IN A SUBSTANTIALLY LONGITUDINAL DIRECTION, SAID REINFORCEMENT BEING OF A WIDTH SUBSTANTIALLY EQUAL TO THE WIDTH OF SAID TREAD RING, AND AT LEAST ONE ANNULAR LAYER OF PROTECTIVE CORDS EXTENDING SUBSTANTIALLY PARALLEL TO EACH OTHER AT AN ANGLE OF NO LESS THAN 30* RELATIVE TO THE MID-CIRCUMFERENTIAL PLANE OF THE TIRE, SAID LAYER OF PROTECTIVE CORDS BEING DISPOSED RADIALLY INWARDLY OF SAID REINFORCEMENT AND BEING OF A WIDTH COEXTENSIVE WITH THE WIDTH OF SAID REINFORCEMENT, AND SAID LAYER OF PROTECTIVE CORDS BEING OF SUCH FLEXIBILITY TO AVOID MODIFYING THE PRESSURE DISTRIBUTION BETWEEN SAID TREAD RING AND THE CARCASS.
Claim 2
Dependent Claim
132 words
IN A REPLACEABLE TREAD RING ADAPTED TO BE DETACHABLY MOUNTED UPON THE CARCASS OF A PNEUMATIC TIRE, A REINFORCEMENT CONSISTING OF A PLURALITY OF CONTINUOUS INEXTENSIBLE CORDS, EACH OF SAID INEXTEISIBLE CORDS BEING DISPOSED IN A SUBSTANTIALLY LONGITUDINAL DIRECTION, SAID REINFORCEMENT BEING OF A WIDTH SUBSTANTIALLY EQUAL TO THE WIDTH OF SAID TREAD RING, AND AT LEAST ONE ANNULAR LAYER OF PROTECTIVE CORDS EXTENDING SUBSTANTIALLY PARALLEL TO EACH OTHER AT AN ANGLE OF NO LESS THAN 30* RELATIVE TO THE MID-CIRCUMFERENTIAL PLANE OF THE TIRE, SAID LAYER OF PROTECTIVE CORDS BEING DISPOSED RADIALLY INWARDLY OF SAID REINFORCEMENT AND BEING OF A WIDTH COEXTENSIVE WITH THE WIDTH OF SAID REINFORCEMENT, AND SAID LAYER OF PROTECTIVE CORDS BEING OF SUCH FLEXIBILITY TO AVOID MODIFYING THE PRESSURE DISTRIBUTION BETWEEN SAID TREAD RING AND THE CARCASS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |