US3891231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Travel trailer frame and suspension
Assignee: TRAVEL EQUIPMENT CORP
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Filing: 1974-10-21
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Granted: 1975-06-24
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Expires: 1994-10-21
Abstract
Abstract A trailer support frame includes full length intermain rails of Z-section, the rails having a central section of maximum size and provided with a mounting notch to accommodate a straight axle. The rails taper forwardly and rearwardly of the central section and are connected to opposite ends of leaf spring assemblies to locate the straight axle close to the support surfaces presented by the rail to achieve a low silhouette, mechanical strength, flexibility of use and unrestricted track axle width.
Inventors
- 👤 Robert C Snoberger
- 👤 Thomas C Delker
- 👤 Richard L Reschly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:01
CPC Classifications
B; B62; B62D; B62D63/00; B62D63/06; B62D63/08; B60; B60G; B60G11/00; B60G11/02; B60G11/04; B62D21/00; B62D21/18; B62D21/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
104 words
A multi-purpose support frame and axle suspension assembly for trailer type vehicles and comprising a pair of truss-like horizontal main rails, providing planar box support surfaces, each rail tapering vertically forwardly and rearwardly of an intermediate axle mounting section thereof; each intermediate mounting section having a downwardly opening mounting notch; a straight axle extending between and projecting beyond the main rails; a leaf spring assembly for supporting each rail from a corresponding end of the axle; and mounting means for connecting each leaf spring assembly to the corresponding rail to position the axle ends within the mounting notches for accommodating relative vertical travel therebetween.
Claim 2
Dependent Claim
104 words
A multi-purpose support frame and axle suspension assembly for trailer type vehicles and comprising a pair of truss-like horizontal main rails, providing planar box support surfaces, each rail tapering vertically forwardly and rearwardly of an intermediate axle mounting section thereof; each intermediate mounting section having a downwardly opening mounting notch; a straight axle extending between and projecting beyond the main rails; a leaf spring assembly for supporting each rail from a corresponding end of the axle; and mounting means for connecting each leaf spring assembly to the corresponding rail to position the axle ends within the mounting notches for accommodating relative vertical travel therebetween.
Claim 3
Dependent Claim
29 words
An arrangement as defined in claim 1 wherein the main rails are substantially full length inter-main rails that provide outboard clearance for accommodating a range of axle track width.
Claim 4
Dependent Claim
25 words
An arrangement as defined in claim 1 and including reenforcement means secured across the mounting notch of each main rail to hold the axle captive.
Claim 5
Dependent Claim
55 words
An arrangement as defined in claim 1 wherein the mounting means includes rear hanger means for connecting the rear of the corresponding leaf spring assembly to a point adjacent the rail support surface and front hanger means for connecting the front of the assembly to a point intermediate of the height of the main rail.
Claim 6
Dependent Claim
70 words
An arrangement as defined in claim 1 wherein the main rails are substantially full Length inter-main rails of generally Z-shape section to provide an outboard top flange, a vertical flange and an inboard bottom flange, each mounting notch being a cut out of the vertical flange and the bottom flange, reenforcement means secured across the cut out of the bottom flange of each main rail to hold the axle captive.
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) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |