Patent US3689102A successfully refreshed from Google Patents.
US3689102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle suspension
Assignee: GRANNING SUSPENSIONS Inc
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Filing: 1970-06-12
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Granted: 1972-09-05
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Expires: 1990-06-12
Abstract
Abstract The vehicle suspension provides an axle assembly which may be mounted either on a truck-tractor or a truck-trailer to provide an additional axle. The suspension includes an axle which is suspended from the vehicle frame by means of a pair of elastomeric springs. A drawbar extends forwardly from the axle. The drawbar is connected, at its forward end, to structure depending from the vehicle frame. The connection includes resilient fastening means which permit some pivoting of the forward end of the drawbar about an axis transverse to the longitudinal axis of the drawbar and generally parallel to the axis of the axle. Lifting means are provided to raise the axle and associated wheels off the ground when desired.
Inventors
- 👤 Ole Granning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:19
CPC Classifications
B; B62; B62D; B62D61/00; B62D61/12; B62D61/125; B60; B60G; B60G11/00; B60G11/22; B60G9/00; B60G9/02; B60G9/027; B60G2200/00; B60G2200/30; B60G2200/31; B60G2202/00; B60G2202/10; B60G2202/15; B60G2202/152; B60G2204/00; B60G2204/40; B60G2204/45; B60G2204/4504; B60G2204/47; B60G2204/4702
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
196 words
In a suspension for a vehicle having a frame comprising a suspension support structure separate from the vehicle frame, said suspension support structure being of a size and including structure for mounting thereof on the vehicle frame, an axle, a spring structure securable between the vehicle frame and axle, said axle suspended from said spring structure, a drawbar extending outwardly from the axle towards the forward end of said suspension support structure, a depending axle support structure at the forward end of the suspension, resilient fastening means pivotable about an axis transverse to the longitudinal axis of the drawbar and generally parallel to the axis of the axle securing the drawbar to the depending axle support structure, said resilient fastening means including an outer metallic sleeve coupling member on the drawbar having a longitudinal axis as described, a resilient elastomeric sleeve within said metallic sleeve, and a coupling member extending through said elastomeric sleeve and attached to the depending axle support structure, and vertical guide means comprising downwardly depending means defining guide surface structure for securement to the vehicle frame and vertically slidaBle structure secured to the axle for sliding engagement with the guide surface structure.
Claim 2
Dependent Claim
196 words
In a suspension for a vehicle having a frame comprising a suspension support structure separate from the vehicle frame, said suspension support structure being of a size and including structure for mounting thereof on the vehicle frame, an axle, a spring structure securable between the vehicle frame and axle, said axle suspended from said spring structure, a drawbar extending outwardly from the axle towards the forward end of said suspension support structure, a depending axle support structure at the forward end of the suspension, resilient fastening means pivotable about an axis transverse to the longitudinal axis of the drawbar and generally parallel to the axis of the axle securing the drawbar to the depending axle support structure, said resilient fastening means including an outer metallic sleeve coupling member on the drawbar having a longitudinal axis as described, a resilient elastomeric sleeve within said metallic sleeve, and a coupling member extending through said elastomeric sleeve and attached to the depending axle support structure, and vertical guide means comprising downwardly depending means defining guide surface structure for securement to the vehicle frame and vertically slidaBle structure secured to the axle for sliding engagement with the guide surface structure.
Claim 3
Dependent Claim
24 words
A suspension as defined in claim 1, further characterized in that said spring structure comprises a pair of spaced apart resilient elastomeric spring members.
Claim 4
Dependent Claim
21 words
A suspension as defined in claim 2, and further characterized in that said spring members are substantially oval in vertical cross-section.
Claim 5
Dependent Claim
33 words
A suspension as defined in claim 1, and further characterized in that said coupling member includes means for applying pressure on the ends of the elastomeric sleeve to frictionally couple the elements together.
Claim 6
Dependent Claim
57 words
A suspension as defined in claim 1, further characterized in the provision of a pneumatic lifting assembly for said axle comprising an inflatable lift element securable to the vehicle frame, and a pair of spaced apart cables extending from said inflatable lift element into connection with axle to lift the axle upon inflation of the inflatable element.
Claim 7
Dependent Claim
81 words
A suspension as defined in claim 1, further characterized in that said vertically slidable structure secured to the axle comprises an integral extension from the drawbar extending rearwardly from the axle, said suspension support structure including a pair of downwardly depending spaced apart leg members, the adjacent surfaces of the leg members providing a vertical guide defining said guide surface structure, a guide block pivotally secured to said extension defining said vertically slidable structure for sliding engagement in said vertical guide.
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |