US3315951A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compression springs of rubber
Assignee: Societa Applicazioni Gomma Antivibranti SAGA SpA
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Filing: 1965-04-06
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Granted: 1967-04-25
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Expires: 1985-04-06
Abstract
No abstract record available.
Inventors
- 👤 Boschi Antonio
- 👤 Martorana Giovanni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:59
CPC Classifications
F; F16; F16F; F16F1/00; F16F1/36; F16F1/371; F16F1/373; F16F1/3732; F16F1/42; F16F1/422; F16F2236/00; F16F2236/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A COMPRESSION SPRING COMPRISING A TUBULAR BODY OF A RESILIENT ELASTOMERIC MATERIAL, SAID TUBULAR BODY HAVING A PAIR OF MUTUALLY PARALLEL END WALLS AND TUBULAR LATERAL WALLS, THE THICKNESS OF SAID TUBULAR LATERAL WALLS CONTINUOUSLY INCREASING FROM A MINIMUM AT EACH OF SAID END WALLS TO A MAXIMUM IN A TRANSVERSE PLANE MIDWAY OF SAID END WALLS AND THE INTERNAL AND EXTERNAL TRANSVERSE DIMENSIONS OF THE TUBULAR BODY EACH CONTINUOUSLY DECREASING FROM A MAXIMUM AT EACH OF SAID END WALLS TO A MINIMUM IN SAID MIDWAY PLANE.
Claim 2
Dependent Claim
87 words
A COMPRESSION SPRING COMPRISING A TUBULAR BODY OF A RESILIENT ELASTOMERIC MATERIAL, SAID TUBULAR BODY HAVING A PAIR OF MUTUALLY PARALLEL END WALLS AND TUBULAR LATERAL WALLS, THE THICKNESS OF SAID TUBULAR LATERAL WALLS CONTINUOUSLY INCREASING FROM A MINIMUM AT EACH OF SAID END WALLS TO A MAXIMUM IN A TRANSVERSE PLANE MIDWAY OF SAID END WALLS AND THE INTERNAL AND EXTERNAL TRANSVERSE DIMENSIONS OF THE TUBULAR BODY EACH CONTINUOUSLY DECREASING FROM A MAXIMUM AT EACH OF SAID END WALLS TO A MINIMUM IN SAID MIDWAY PLANE.
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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |