US3319952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic or air springs
Assignee: Compagnie Generale des Etablissements Michelin SCA
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Filing: 1965-03-15
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Granted: 1967-05-16
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Expires: 1985-03-15
Abstract
No abstract record available.
Inventors
- 👤 Travers Georges Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:28
CPC Classifications
B; B60; B60G; B60G11/00; B60G11/26; B60G11/27; F; F16; F16F; F16F9/00; F16F9/02; F16F9/04; F16F9/0409; F16F9/0454
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
AN AIR SPRING BELLOWS COMPRISING AN ENDLESS FLEXIBLE WALL AND OPEN END PORTIONS, A PLURALITY OF PILES OF CORDS REINFORCING SAID END PORTIONS, THE CORDS OF EACH PLY BEING SUBSTANTIALLY PARALLEL AND THE CORDS OF SAID PLIES BEING LAID IN NO MORE THAN TWO DIRECTIONS, SAID END PORTIONS BEING DEVOID OF CIRCUMFERENTIALLY EXTENDING REINFORCEMENTS AND BEING SUBSTANTIALLY WEDGE-SHAPED AND EACH END PORTION HAVING INNER AND OUTER SURFACES CONVERGING TOWARD THE OTHER END PORTION AND AN ELASTOMER IN SAID END PORTIONS HAVING A HARDNESS BETWEEN ABOUT 70* AND 90* SHORE WHEREBY SAID END PORTIONS ARE SUBSTANTIALLY INCOMPRESSIABLE IN CROSS-SECTION AND SLIGHTLY EXTENSIBLE CIRCUMFERENTIALLY AND AXIALLY.
Claim 2
Dependent Claim
104 words
AN AIR SPRING BELLOWS COMPRISING AN ENDLESS FLEXIBLE WALL AND OPEN END PORTIONS, A PLURALITY OF PILES OF CORDS REINFORCING SAID END PORTIONS, THE CORDS OF EACH PLY BEING SUBSTANTIALLY PARALLEL AND THE CORDS OF SAID PLIES BEING LAID IN NO MORE THAN TWO DIRECTIONS, SAID END PORTIONS BEING DEVOID OF CIRCUMFERENTIALLY EXTENDING REINFORCEMENTS AND BEING SUBSTANTIALLY WEDGE-SHAPED AND EACH END PORTION HAVING INNER AND OUTER SURFACES CONVERGING TOWARD THE OTHER END PORTION AND AN ELASTOMER IN SAID END PORTIONS HAVING A HARDNESS BETWEEN ABOUT 70* AND 90* SHORE WHEREBY SAID END PORTIONS ARE SUBSTANTIALLY INCOMPRESSIABLE IN CROSS-SECTION AND SLIGHTLY EXTENSIBLE CIRCUMFERENTIALLY AND AXIALLY.
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) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |