US3762487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wheeled vehicle suspension
Assignee: Individual
•
Filing: 1971-10-18
•
Granted: 1973-10-02
•
Expires: 1991-10-18
Abstract
Abstract A wheeled vehicle suspension positions tandem axle assemblies on the vehicle by way of semi-elliptic springs normally urging said tandem axle assemblies toward said vehicle so as to lift them from a road surface. Air bags are positioned between the tandem axle assemblies and the vehicle and means for inflating and deflating the air bags permit either or both of the tandem axle assemblies to be lifted from a road surface or engage therewith in a weight carrying relation to said vehicle.
Inventors
- 👤 M Bilas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:28
CPC Classifications
B; B62; B62D; B62D61/00; B62D61/12; B62D61/125
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
93 words
A wheel suspension for a vehicle including first and second wheel and axle assemblies underlying said vehicle in tandem arrangement, spring means extending between said first and second wheel and axle assemblies, and means on said vehicle engaging said spring means centrally thereof, said spring means normally urging said wheel and axle assemblies towards said vehicle and air bags positioned between said vehicle and each of said wheel and axle assemblies for moving said wheel and axle assemblies away from said vehicle when inflated, and means for inflating and deflating said air bags.
Claim 2
Dependent Claim
93 words
A wheel suspension for a vehicle including first and second wheel and axle assemblies underlying said vehicle in tandem arrangement, spring means extending between said first and second wheel and axle assemblies, and means on said vehicle engaging said spring means centrally thereof, said spring means normally urging said wheel and axle assemblies towards said vehicle and air bags positioned between said vehicle and each of said wheel and axle assemblies for moving said wheel and axle assemblies away from said vehicle when inflated, and means for inflating and deflating said air bags.
Claim 3
Dependent Claim
38 words
The wheel suspension of claim 1 and wherein said spring means consists of a pair of leaf springs having a semi-U shaped configuration in unloaded condition with said wheel and axle assemblies secured to the opposite ends thereof.
Claim 4
Dependent Claim
43 words
The wheel suspension of claim 1 and wherein the means on the vehicle engaging the spring means comprises members extending downwardly from said vehicle and attached to said spring means centrally thereof so as to space said springs with respect to said vehicle.
Claim 5
Dependent Claim
61 words
The wheel suspension of claim 1 and wherein one of said wheel and axle assemblies is driven, and means including a drive shaft and differential are employed for driving the same, and a separable connection in said drive shaft is arranged to disconnect said driven wheel and axle assembly from said drive shaft when said wheel and axle assembly is elevated.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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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) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |