Patent US3669467A successfully refreshed from Google Patents.
US3669467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle elastomeric suspension system
Assignee: Paccar Inc
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Filing: 1970-02-26
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Granted: 1972-06-13
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Expires: 1990-02-26
Abstract
Abstract An elastomeric rear axle suspension system for a vehicle consisting of spherical springs of an elastomeric material and elastomeric support pads, the spherical springs and support pads being in position between a support mounted to the axle and the vehicle frame. The spherical springs and support pads contact the frame when the vehicle is loaded, and the spherical springs lift the frame away from the support pads. Rebound cables control excessive motion which would separate the axle from the frame.
Inventors
- 👤 Dennis L Dunlap
- 👤 Darrel L Bryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:44
CPC Classifications
B; B60; B60G; B60G11/00; B60G11/22
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
121 words
A suspension system for a vehicle having a frame and a pair of spatially located wheels joined by an axle comprising: an elongated suspension supporting means rigidly mounted to the axle generally parallel to the frame, elastomeric suspension means mounted between the support means and the frame providing support along substantially he entire support means, and means pivotally connecting the axle to the frame whereby relative vertical movement of the frame and the axle causes an angular movement of the axle about a point on the frame and thus causes the suspension supporting means to have a varying angle to the frame depending upon the load and providing greater support the more nearly parallel the supporting means is to the frame.
Claim 2
Dependent Claim
121 words
A suspension system for a vehicle having a frame and a pair of spatially located wheels joined by an axle comprising: an elongated suspension supporting means rigidly mounted to the axle generally parallel to the frame, elastomeric suspension means mounted between the support means and the frame providing support along substantially he entire support means, and means pivotally connecting the axle to the frame whereby relative vertical movement of the frame and the axle causes an angular movement of the axle about a point on the frame and thus causes the suspension supporting means to have a varying angle to the frame depending upon the load and providing greater support the more nearly parallel the supporting means is to the frame.
Claim 3
Dependent Claim
35 words
A suspension system as in claim 1, wherein the suspension means comprises a plurality of the elastomeric spheres which are mounted between flat surfaces thereby resulting in a varying rate of rebound for varying loads.
Claim 4
Dependent Claim
62 words
A suspension system as in claim 1, wherein the suspension system further includes a second supporting means having mounted thereon rubber support pads of lesser vertical dimension than the first suspension meAns whereby the vehicle, when loaded, will be supported by both systems the first system having been compressed to the point of contact between the frame and the second supporting means.
Claim 5
Dependent Claim
22 words
A suspension system as in claim 1, further including a rod means for positioning the axle laterally with respect to the frame.
Claim 6
Dependent Claim
122 words
A suspension system for a vehicle having a pair of spatially located wheels joined by an axle and a framework located above the axle comprising: a platform mounted upon the upper portion of the axle beneath the frame, elastomeric suspension means including elements of differing compression ratios mounted on top of the platform for abutment against the frame, and means rigidly attached to the axle and pivotally attached to the frame, causing the axle to pivot about the frame connection point as the frame moves vertically relative to the axle whereby the platform is at an acute angle to the frame except when the vehicle is fully loaded and the frame rests upon only those elastomeric elements necessary to support the load.
Claim 7
Dependent Claim
122 words
A suspension system for a vehicle having a pair of spatially located wheels joined by an axle and a framework located above the axle comprising: a platform mounted upon the upper portion of the axle beneath the frame, elastomeric suspension means including elements of differing compression ratios mounted on top of the platform for abutment against the frame, and means rigidly attached to the axle and pivotally attached to the frame, causing the axle to pivot about the frame connection point as the frame moves vertically relative to the axle whereby the platform is at an acute angle to the frame except when the vehicle is fully loaded and the frame rests upon only those elastomeric elements necessary to support the load.
Claim 8
Dependent Claim
36 words
A suspension system as in claim 5 wherein the pivotal connecting means comprises a pair of arms pivotally attached to the frame at the same point, and attached to the axle housing at vertically spaced points.
Claim 9
Dependent Claim
49 words
A suspension as in claim 5, wherein the pivotal connecting means comprises a pair of rods attached to the frame spatially attached along the vertical line of one end of the axle and a single rod attached to the other said frame to the other end of the axle.
Claim 10
Dependent Claim
34 words
A suspension system as in claim 5 and further including a stabilizer rod mounted to the upper portion of the axle housing and extending generally longitudinally of the axle and attached to the frame.
Claim 11
Dependent Claim
26 words
A suspension system as in claim 5 and further including rebound means to control the vertical upward movement of the frame with respect to the axle.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |