US3743315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer vehicle suspension
Assignee: Individual
•
Filing: 1972-01-21
•
Granted: 1973-07-03
•
Expires: 1992-01-21
Abstract
Abstract A trailer vehicle suspension suitable for trucks and trailers positions a wheel and axle assembly beneath the trailer vehicle and on the ends of a pair of trailing arms, a semi-elliptic spring positioned transversely of the vehicle and secured thereto and to the wheel and axle assembly lifts the same from a road surface. Air bags 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 by the semi-elliptic spring or engaged on the road surface in a weight carrying relation to the trailer vehicle when the air bags are inflated.
Inventors
- 👤 M Bilas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:55
CPC Classifications
B; B60; B60G; B60G11/00; B60G11/32; B60G11/34; B60G11/46; B60G11/465; B62; B62D; B62D61/00; B62D61/12; B62D61/125
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
78 words
A trailer vehicle suspension including a wheel and axle assembly, an elongated spring positioned transversely on said vehicle and attached to said vehicle and to said wheel and axle assembly, said elongated spring 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
78 words
A trailer vehicle suspension including a wheel and axle assembly, an elongated spring positioned transversely on said vehicle and attached to said vehicle and to said wheel and axle assembly, said elongated spring 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
21 words
The trailer vehicle suspension of claim 1 and wherein said elongated spring is a semi-elliptic spring substantially straight in unloaded condition.
Claim 4
Dependent Claim
32 words
The trailer vehicle suspension of claim 1 and wherein trailing arms are positioned longitudinally of said vehicle and pivoted thereto and have their trailing ends secured to said wheel and axle assembly.
Claim 5
Dependent Claim
27 words
The trailer vehicle suspension of claim 3 and wherein said air bags are positioned between said vehicle and said trailing arms and adjacent said wheel and axle.
Claim 6
Dependent Claim
56 words
The trailer vehicle suspension of claim 3 and wherein said elongated spring is a semi-elliptic spring and wherein shackles at the ends of said spring movably secure it to the opposite sides of said trailer vehicle and wherein the center section of said semi-elliptic spring is attached to the axle of said wheel and axle assembly.
References Cited (Backward Citations)
US3093388A
Cited
US3617072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |