US3740071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle suspension
Assignee: Individual
•
Filing: 1971-12-15
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Granted: 1973-06-19
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Expires: 1991-12-15
Abstract
Abstract A vehicle suspension suitable for trucks and trailers positions a wheel and axle assembly on the vehicle on the trailing ends of a pair of semi-elliptic springs arranged to urge the wheel and axle assembly toward the vehicle so as to lift the same from a road surface. Air bags are positioned between the wheel and axle assembly and the vehicle and means for inflating and deflating the air bags permit the wheel and axle assembly to be lifted from the road surface or engaged therewith in a weight carrying relation to the vehicle. The semi-elliptic springs are positioned by fulcrum members engaging their center sections and their forward ends are pivoted to the vehicle or another wheel and axle assembly.
Inventors
- 👤 M Bilas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:56
CPC Classifications
B; B62; B62D; B62D61/00; B62D61/12; B62D61/125
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
A wheel suspension for a vehicle including a wheel and axle assembly, parallel elongated springs on said vehicle having free end portions attached to the axle of said wheel and axle assembly, means on said vehicle holding the middle portions of said elongated springs, said elongated springs normally urging said wheel and axle assembly toward said vehicle and air bags between said wheel and axle assembly and said vehicle acting when inflated to move said wheel and axle assembly away from said vehicle and means for inflating and deflating said air bagS.
Claim 2
Dependent Claim
92 words
A wheel suspension for a vehicle including a wheel and axle assembly, parallel elongated springs on said vehicle having free end portions attached to the axle of said wheel and axle assembly, means on said vehicle holding the middle portions of said elongated springs, said elongated springs normally urging said wheel and axle assembly toward said vehicle and air bags between said wheel and axle assembly and said vehicle acting when inflated to move said wheel and axle assembly away from said vehicle and means for inflating and deflating said air bagS.
Claim 3
Dependent Claim
26 words
The wheel suspension of claim 1 and wherein said elongated springs consist of a pair of leaf springs having a semi U-shaped configuration in unloaded condition.
Claim 4
Dependent Claim
70 words
The wheel suspension of claim 1 and wherein the means on the vehicle engaging the springs in the middle thereof comprises a support member secured to said springs and said vehicle and means on the vehicle engaging the opposite ends of the springs with respect to the wheel and axle assembly consisting of pivots secured to said vehicle so as to position said elongated springs in trailing arm relation thereto.
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |