Patent US3392638A successfully refreshed from Google Patents.
Patent US3175840A successfully refreshed from Google Patents.
US3175840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension for vehicles
Assignee: Mack Trucks Inc
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Filing: 1963-02-14
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Granted: 1965-03-30
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Expires: 1983-02-14
Abstract
No abstract record available.
Inventors
- 👤 Robert M Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:05
CPC Classifications
B; B60; B60G; B60G5/00; B60G5/02; B60G5/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A VEHICULAR SUSPENSION COMPRISING AN ELONGATED SPRING MEANS HAVING A CONTACT SURFACE AND AN OUTER END AND AN ELONGATED BACKING MEMBER, HAVING AN OUTER END ADJACENT TO SAID END OF SAID SPRING MEANS AND A CONTACT SURFACE OPPOSING SAID CONTACT SURFACE OF SAID SPRING MEANS FOR PROGRESSIVELY CONTACTING SAID CONTACT SURFACE OF SAID SPRING MEANS IN VARYING DEGREE ALONG ITS LONGITUDINAL EXTENT DEPENDENT UPON VEHICLE LOAD CONDITIONS AND ALONG ITS FULL EXTENT WHEN UNDER RELATIVELY HEAVY LOAD, SAID CONTACT SURFACE OF SAID BACKING MEMBER TAPERING IN WIDTH TOWARD SAID OUTER END THEREOF AND SAID OUTER END OF SAID CONTACT SURFACE OF SAID BACKING MEMBER HAVING A WIDTH LESS THAN THE WIDTH OF SAID CONTACT SURFACE OF SAID SPRING MEANS OPPOSITE THERETO TO ENABLE TORSIONAL MOVEMENT OF SAID SPRING MEANS RELATIVE TO SAID BACKING MEMBER UNDER SAID VEHICLE LOAD CONDITIONS AND HEAVY LOAD.
Claim 2
Dependent Claim
142 words
A VEHICULAR SUSPENSION COMPRISING AN ELONGATED SPRING MEANS HAVING A CONTACT SURFACE AND AN OUTER END AND AN ELONGATED BACKING MEMBER, HAVING AN OUTER END ADJACENT TO SAID END OF SAID SPRING MEANS AND A CONTACT SURFACE OPPOSING SAID CONTACT SURFACE OF SAID SPRING MEANS FOR PROGRESSIVELY CONTACTING SAID CONTACT SURFACE OF SAID SPRING MEANS IN VARYING DEGREE ALONG ITS LONGITUDINAL EXTENT DEPENDENT UPON VEHICLE LOAD CONDITIONS AND ALONG ITS FULL EXTENT WHEN UNDER RELATIVELY HEAVY LOAD, SAID CONTACT SURFACE OF SAID BACKING MEMBER TAPERING IN WIDTH TOWARD SAID OUTER END THEREOF AND SAID OUTER END OF SAID CONTACT SURFACE OF SAID BACKING MEMBER HAVING A WIDTH LESS THAN THE WIDTH OF SAID CONTACT SURFACE OF SAID SPRING MEANS OPPOSITE THERETO TO ENABLE TORSIONAL MOVEMENT OF SAID SPRING MEANS RELATIVE TO SAID BACKING MEMBER UNDER SAID VEHICLE LOAD CONDITIONS AND HEAVY LOAD.
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) | 1968-03-29 | 1968-09-28 | 1969-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-29 | 1972-09-28 | 1973-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-29 | 1976-09-28 | 1977-03-30 | $7700.00 | Window Closed / Lapsed |