Patent US3071538A successfully refreshed from Google Patents.
US3194580A
Expired / Lapsed
US
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Leaf spring suspension system with noload feature and axle adjustment
Assignee: Cambria Spring Co
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Filing: 1961-05-19
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Granted: 1965-07-13
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Expires: 1981-05-19
Abstract
No abstract record available.
Inventors
- 👤 Buck C Hamlet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:19
CPC Classifications
B; B60; B60G; B60G11/00; B60G11/02; B60G11/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A SPRING ASSEMBLY FOR AN AUTOMOTIVE VEHICLE, COMPRISING A LEAF SPRING, AN AXLE SUPPORT AT THE CENTER OF SAID LEAF SPRING, SPRING HANGERS AT THE ENDS, RESPECTIVELY, OF SAID SPRING ADAPTED FOR ATTACHMENT TO THE VEHICLE FRAME, AT LEAST ONE OF SAID HANGERS INCLUDING A RIGID SPRING SEAT OVER THE ADJACENT END OF THE SPRING, AND A RELATIVELY LIGHT AUXILIARY SPRING CARRIED BY SAID ONE HANGER AND INTERPOSED BETWEEN SAID SPRING SEAT AND SAID ADJACENT SPRING END FOR YIELDABLY RESISTING RELATIVE MOVEMENT OF SAID LATTER SPRING END TOWARD SAID SEAT.
Claim 2
Dependent Claim
90 words
A SPRING ASSEMBLY FOR AN AUTOMOTIVE VEHICLE, COMPRISING A LEAF SPRING, AN AXLE SUPPORT AT THE CENTER OF SAID LEAF SPRING, SPRING HANGERS AT THE ENDS, RESPECTIVELY, OF SAID SPRING ADAPTED FOR ATTACHMENT TO THE VEHICLE FRAME, AT LEAST ONE OF SAID HANGERS INCLUDING A RIGID SPRING SEAT OVER THE ADJACENT END OF THE SPRING, AND A RELATIVELY LIGHT AUXILIARY SPRING CARRIED BY SAID ONE HANGER AND INTERPOSED BETWEEN SAID SPRING SEAT AND SAID ADJACENT SPRING END FOR YIELDABLY RESISTING RELATIVE MOVEMENT OF SAID LATTER SPRING END TOWARD SAID SEAT.
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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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |