US3177003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tandem suspension construction
Assignee: Fruehauf Corp
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Filing: 1963-01-11
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Granted: 1965-04-06
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Expires: 1983-01-11
Abstract
No abstract record available.
Inventors
- 👤 Keith W Tantlinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:55
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3006; B60; B60G; B60G11/00; B60G11/32; B60G11/34; B60G11/44; B60G21/00; B60G21/02; B60G21/04; B60G21/045; B60G5/00; B60G5/04; B60G5/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
AN EQUALIZED MULTIPLE AXLE WHEEL SUSPENSION COMPRISING AN ELONGATED FRAME, FRONT AND REAR AXLES EXTENDING LATERALLY OF SAID FRAME, A PAIR OF LONGITUDINALLY SPACED AND ALIGNED ELLIPTICAL SPRINGS FOR SUSPENDING SAID AXLES, RESPECTIVELY, FROM SAID FRAME, AN EQUALIZING LEVER PIVOTALLY SUPPORTED BY SAID FRAME BETWEEN AND IN ALIGNMENT WITH SAID SPRINGS, SAID LEVER HAVING END PORTIONS PIVOTALLY ENGAGEABLE WITH ADJACENT END PORTIONS OF SAID SPRINGS, A FIRST RADIUS ROD EXTENDING BETWEEN AND PIVOTALLY COUPLED TO SAID AXLES, RESPECTIVELY, SAID RADIUS ROD BEING ATTACHED TO THE REAR AXLE AT A POINT SPACED FROM THE CENTRAL AXIS THEREOF SO THAT A LINE DRAWN BETWEEN THE CENTRAL AXIS OF THE REAR AXLE AND THE POINT OF ATTACHMENT OF SAID RADIUS ROD THERETO IS ANGULARLY RELATED TO THE LONGITUDINAL AXIS OF SAID RADIUS ROD SO THAT TENSIONING OF SAID RADIUS ROD DUE TO UPWARD MOVEMENT OF SAID FRONT AXLE PRODUCES A TORQUE ON SAID REAR AXLE, AND A SECOND RADIUS ROD EXTENDING BETWEEN THE FRONT AXLE AND SAID FRAME.
Claim 2
Dependent Claim
165 words
AN EQUALIZED MULTIPLE AXLE WHEEL SUSPENSION COMPRISING AN ELONGATED FRAME, FRONT AND REAR AXLES EXTENDING LATERALLY OF SAID FRAME, A PAIR OF LONGITUDINALLY SPACED AND ALIGNED ELLIPTICAL SPRINGS FOR SUSPENDING SAID AXLES, RESPECTIVELY, FROM SAID FRAME, AN EQUALIZING LEVER PIVOTALLY SUPPORTED BY SAID FRAME BETWEEN AND IN ALIGNMENT WITH SAID SPRINGS, SAID LEVER HAVING END PORTIONS PIVOTALLY ENGAGEABLE WITH ADJACENT END PORTIONS OF SAID SPRINGS, A FIRST RADIUS ROD EXTENDING BETWEEN AND PIVOTALLY COUPLED TO SAID AXLES, RESPECTIVELY, SAID RADIUS ROD BEING ATTACHED TO THE REAR AXLE AT A POINT SPACED FROM THE CENTRAL AXIS THEREOF SO THAT A LINE DRAWN BETWEEN THE CENTRAL AXIS OF THE REAR AXLE AND THE POINT OF ATTACHMENT OF SAID RADIUS ROD THERETO IS ANGULARLY RELATED TO THE LONGITUDINAL AXIS OF SAID RADIUS ROD SO THAT TENSIONING OF SAID RADIUS ROD DUE TO UPWARD MOVEMENT OF SAID FRONT AXLE PRODUCES A TORQUE ON SAID REAR AXLE, AND A SECOND RADIUS ROD EXTENDING BETWEEN THE FRONT AXLE AND SAID FRAME.
References Cited (Backward Citations)
US1877970A
Cited
US2606769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |