US3608927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Longitudinal-flexibility wheel suspension
Assignee: Automobiles Citroen SA
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Filing: 1969-12-22
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Granted: 1971-09-28
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Expires: 1989-12-22
Abstract
Abstract Longitudinal-flexibility suspension system for vehicle wheels comprising an arm adapted to oscillate about a fixed shaft disposed in a vertical longitudinal plane and rigid with the chassis of the vehicle, a first sleeve of elastomer mounted about said shaft and having a cylindrical outer surface formed with hollow cells spaced from one another and from the sleeve ends, said outer surface of the sleeve being in frictional contact with the inner surface of a first end of a hub while a second connecting means consists of a second sleeve of elastomer fitted on said shaft and formed with circular external projections in frictional contact with the inner surface of the other end of said hub.
Inventors
- 👤 Albert Grosseau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:32
CPC Classifications
B; B60; B60G; B60G7/00; B60G7/02; F; F16; F16F; F16F1/00; F16F1/36; F16F1/373; F16F1/376; F16F1/38; F16F1/387; B60G2200/00; B60G2200/40; B60G2200/445; B60G2200/462; B60G2204/00; B60G2204/10; B60G2204/14; B60G2204/143; B60G2204/40; B60G2204/41
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
255 words
A wheel suspension providing a longitudinal flexibility for a wheel having its support mounted through pivot means to the end of a transverse arm provided with a hub whereby said arm is pivotally mounted about a fixed shaft disposed in vertical and longitudinal plane, and rigid with the chassis of the vehicle, said suspension comprising a first means for flexibly connecting a first end of said hub to the shaft disposed therein for substantially preventing any radial movement of the hub axis while permitting its inclination in relation to the shaft by oscillating about a center located adjacent the point of intersection of said shaft axis with the transverse plane containing the axis of the pivotal movements of said arm in relation to the wheel support, said first connecting means consisting of a first sleeve of elastomer mounted about said shaft and formed with a cylindrical outer surface having hollow cells spaced from one another and from the opposite ends of said sleeve, said cylindrical outer surface being in frictional contact with the inner surface of said first end of said hub, and a second means for flexibly connecting the second end of said hub to the shaft housed within said hub and damping out the radial movements of said second hub end in relation to said shaft, said second connecting means consisting of another sleeve of elastomer mounted about said shaft and carrying on its outer surface circular transverse projections in frictional contact with the inner surface of the second end of said hub.
Claim 2
Dependent Claim
255 words
A wheel suspension providing a longitudinal flexibility for a wheel having its support mounted through pivot means to the end of a transverse arm provided with a hub whereby said arm is pivotally mounted about a fixed shaft disposed in vertical and longitudinal plane, and rigid with the chassis of the vehicle, said suspension comprising a first means for flexibly connecting a first end of said hub to the shaft disposed therein for substantially preventing any radial movement of the hub axis while permitting its inclination in relation to the shaft by oscillating about a center located adjacent the point of intersection of said shaft axis with the transverse plane containing the axis of the pivotal movements of said arm in relation to the wheel support, said first connecting means consisting of a first sleeve of elastomer mounted about said shaft and formed with a cylindrical outer surface having hollow cells spaced from one another and from the opposite ends of said sleeve, said cylindrical outer surface being in frictional contact with the inner surface of said first end of said hub, and a second means for flexibly connecting the second end of said hub to the shaft housed within said hub and damping out the radial movements of said second hub end in relation to said shaft, said second connecting means consisting of another sleeve of elastomer mounted about said shaft and carrying on its outer surface circular transverse projections in frictional contact with the inner surface of the second end of said hub.
Claim 3
Dependent Claim
32 words
A suspension as set forth in claim 1, comprising interposed friction rings whereby the frictional contact between said first and second sleeves and the inner surface of said hub can take place.
Claim 4
Dependent Claim
47 words
A suspension as set forth in claim 1, comprising bearing surfaces rigid with the chassis of the vehicle and intermediate friction members providing the axial setting of said arm in relation to the fixed shaft by the abutting engagement of the hub ends against said bearing surfaces.
Claim 5
Dependent Claim
21 words
A suspension as set forth in claim 3, wherein said friction members are integral parts of said first and second sleeves.
Claim 6
Dependent Claim
38 words
A suspension as set forth in claim 3, wherein the annular gap provided between said shaft and said hub is sealed by means of said friction members in constant sliding contact with said hub or interposed friction rings.
Claim 7
Dependent Claim
27 words
A suspension as set forth in claim 1, wherein said circular projections formed on said second sleeve have a contour formed with a relatively sharp angular apex.
Claim 8
Dependent Claim
24 words
A suspension as set forth in claim 1, wherein said circular projections formed on said second sleeve consist of beads having unequal outer diameters.
Claim 9
Dependent Claim
47 words
A suspension as set forth in claim 7, wherein said circular transverse projections formed on the outer periphery of said second sleeve have their outer diameters decreasing gradually in the direction away from the center of oscillation of the hub in relation to said longitudinal carrier shaft.
Claim 10
Dependent Claim
51 words
A suspension as set forth in claim 8, wherein said circular transverse projections of decreasing diameter which are carried by said second sleeve have a substantially frustoconical geometrical envelope of which the major base is nearer to the center of oscillation of the hub in said shaft than the minor base.
Claim 11
Dependent Claim
51 words
A suspension as set forth in claim 1, wherein the radii of curvature of the meridians of said circular transverse projections carried by the outer periphery of said second sleeve decrease gradually in the direction away from the center of oscillation of the hub in relation to the longitudinal carrier arm.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |