US3117799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self equalizing tandem spring suspension assembly
Assignee: KAY BRUNNER STEEL PRODUCTS Inc
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Filing: 1961-11-14
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Granted: 1964-01-14
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Expires: 1981-11-14
Abstract
No abstract record available.
Inventors
- 👤 Arnold F Behnke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:40
CPC Classifications
B; B60; B60G; B60G11/00; B60G11/32; B60G11/34; B60G11/44; B60G5/00; B60G5/04; B60G5/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
IN A SELF-EQUALIZING TANDEM SUSPENSION ASSEMBLY FOR TRUCKS, VANS AND THE LIKE, AND OF THE TYPE HAVING A PAIR OF BRAKE-EQUIPPED CARRIAGES FLOATINGLY CONNECTED TO THE OVERLYING VEHICLE FRAME BY PAIRS OF SPRING BEAMS WHICH SPRING BEAMS ARE RIGIDLY CONNECTED AT THEIR MIDPORTIONS TO SAID CARRIAGES, THE REMOTE ENDS OF THE SPRING BEAMS ALONG EACH SIDE OF THE FRAME BEARING AGAINST HANGER BRACKETS RIGID WITH THE FRAME AND THE ADJACENT ENDS OF THE BEAMS BEING INTERCONNECTED BY BEARING CONTACT WITH A PIVOTALLY SUPPORTED EQUALIZING BEAM CARRIED BY SAID FRAME THROUGH RESILIENT TORSION COUPLING MEANS; THAT IMPROVEMENT IN SAID ASSEMBLY FOR CONTROLLING BRAKE HOPPING WHICH COMPRISES, MEANS INCLUDING A SEPARATE PIVOTALLY CONNECTED PARALLELOGRAM LINKAGE BETWEEN THE OPPOSITE ENDS OF EACH CARRIAGE AND THE VEHICLE FRAME ON EACH SIDE OF THE VEHICLE, EACH OF SAID LINKAGES INCLUDING AN UPPER
Claim 2
Dependent Claim
137 words
IN A SELF-EQUALIZING TANDEM SUSPENSION ASSEMBLY FOR TRUCKS, VANS AND THE LIKE, AND OF THE TYPE HAVING A PAIR OF BRAKE-EQUIPPED CARRIAGES FLOATINGLY CONNECTED TO THE OVERLYING VEHICLE FRAME BY PAIRS OF SPRING BEAMS WHICH SPRING BEAMS ARE RIGIDLY CONNECTED AT THEIR MIDPORTIONS TO SAID CARRIAGES, THE REMOTE ENDS OF THE SPRING BEAMS ALONG EACH SIDE OF THE FRAME BEARING AGAINST HANGER BRACKETS RIGID WITH THE FRAME AND THE ADJACENT ENDS OF THE BEAMS BEING INTERCONNECTED BY BEARING CONTACT WITH A PIVOTALLY SUPPORTED EQUALIZING BEAM CARRIED BY SAID FRAME THROUGH RESILIENT TORSION COUPLING MEANS; THAT IMPROVEMENT IN SAID ASSEMBLY FOR CONTROLLING BRAKE HOPPING WHICH COMPRISES, MEANS INCLUDING A SEPARATE PIVOTALLY CONNECTED PARALLELOGRAM LINKAGE BETWEEN THE OPPOSITE ENDS OF EACH CARRIAGE AND THE VEHICLE FRAME ON EACH SIDE OF THE VEHICLE, EACH OF SAID LINKAGES INCLUDING AN UPPER
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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) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |