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US4140333A Expired / Lapsed US ⏱️ 0.0 years remaining

Rear-axle structure for automotive vehicles

Assignee: Renault SA
•
Filing: 1977-04-28
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Granted: 1979-02-20
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Expires: 1997-04-28
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Abstract

Abstract An improved rear axle suspension system wherein independently suspended wheels are supported from an extremity of a trailing wheel arm by a wheel spindle thereof, the wheel arms having extensions aligned transversely of the vehicle and constituting semi-axles, the adjacent ends of which engage in rotatable fashion with one being disposed at least partially inside the other, while the other ends are rotatably supported by bracing elements fastened to longitudinal frame members of the vehicle, the shock absorbers being attached at their upper ends to extensions of these lateral bracing elements and at their lower ends to the shanks of the wheel spindles, such that the axes of rotation of the wheel arms and of the shock absorbers are as far apart as possible, the extensions of the lateral bracing elements to which the upper ends of the shock absorbers are attached being disposed so that the shock absorbers are slightly inclined to the horizontal, whereby a sensibly variable reduction ratio between the displacement of the shock absorber pistons and the vertical excursions of the wheels is provided.

Inventors

  • 👤 Richard Thoraval
  • 👤 Rene Krin
  • 👤 Jean-Paul Delmas

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 05:34
CPC Classifications
B; B60; B60G; B60G11/00; B60G11/18; B60G11/20; B60G11/183; B60G21/00; B60G21/02; B60G21/04; B60G21/05; B60G21/055; B60G3/00; B60G3/02; B60G3/12; B60G3/14

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 168 words
In a rear axle of an automotive vehicle, with independently suspended wheels, each supported from an extremity of a trailing wheel arm by a wheel spindle thereof, the improvement comprising: said wheel arms having extensions aligned transversely of the vehicle and constituting semi-axles, the adjacent ends of which engage, in rotatable fashion, with one being disposed at least partially inside the other, while the other ends are rotatably supported by lateral-bracing elements fastened to longitudinal frame members of the vehicle; said lateral bracing elements also having extensions to which the upper ends of respective shock absorbers are attached; the lower ends of said shock absorbers being attached to the shanks of said wheel spindles; and said extensions of said lateral bracing elements to which the upper ends of the said shock absorbers are attached being disposed so that said shock absorbers are slightly inclined from the horizontal, thereby providing a sensibly variable reduction ratio between the displacement of the shock-absorber pistons and the vertical excursions of the wheels.
Claim 2
Dependent Claim 168 words
In a rear axle of an automotive vehicle, with independently suspended wheels, each supported from an extremity of a trailing wheel arm by a wheel spindle thereof, the improvement comprising: said wheel arms having extensions aligned transversely of the vehicle and constituting semi-axles, the adjacent ends of which engage, in rotatable fashion, with one being disposed at least partially inside the other, while the other ends are rotatably supported by lateral-bracing elements fastened to longitudinal frame members of the vehicle; said lateral bracing elements also having extensions to which the upper ends of respective shock absorbers are attached; the lower ends of said shock absorbers being attached to the shanks of said wheel spindles; and said extensions of said lateral bracing elements to which the upper ends of the said shock absorbers are attached being disposed so that said shock absorbers are slightly inclined from the horizontal, thereby providing a sensibly variable reduction ratio between the displacement of the shock-absorber pistons and the vertical excursions of the wheels.
Claim 3
Dependent Claim 37 words
In a rear axle of an automotive vehicle, as set forth in claim 1, said rear axle being attached to the automative frame only through plates of said lateral-bracing elements secured to said vehicle longitudinal frame members.
Claim 4
Dependent Claim 30 words
In a rear axle of an automotive vehicle, as set forth in claim 2, said plates of said lateral bracing elements being fastened by bolts to said longitudinal frame members.
Claim 5
Dependent Claim 24 words
In a rear axle of an automotive vehicle, as set forth in claim 3, wherein said longitudinal frame members constitute reinforced vehicle body portions.

References Cited (Backward Citations)

FR540406A Cited
DE720049C Cited
US2702701A Cited
US3207497A Cited
US3615081A Cited
US3778082A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-02-19 1982-08-21 1983-02-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-02-19 1986-08-21 1987-02-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-02-19 1990-08-21 1991-02-20 $7700.00 Window Closed / Lapsed

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