Patent US4621830A successfully refreshed from Google Patents.
US4621830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automotive suspension system
Assignee: Mazda Motor Corp
•
Filing: 1985-01-09
•
Granted: 1986-11-11
•
Expires: 2005-01-09
Abstract
Abstract An automotive suspension system comprises a wheel support for supporting a wheel, and a wheel supporting member for connecting the wheel support to the vehicle body. The wheel supporting member includes front and rear resilient bushings spaced from each other by a predetermined distance in the longitudinal direction of the vehicle body and the direction of the toe of the wheel is adapted to be changed according to the deformation of the front and rear bushings. The load-deformation characteristics of the front and rear bushings are selected so that the ratio of the amount of deformation of the front bushing for a given load to that of the rear bushing for the same load changes according to the magnitude of the side force acting on the wheel, thereby changing the steering characteristics according to the magnitude of the side force.
Inventors
- 👤 Seita Kanai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:58
CPC Classifications
B; B60; B60G; B60G3/00; B60G3/18; B60G3/20; B60G3/202; B60G3/205; B60G7/00; F; F16; F16F; F16F1/00; F16F1/36; F16F1/371; F16F1/3713; F16F1/38; F16F1/387; B60G2204/00; B60G2204/40; B60G2204/41; B60G2204/4104; B60G2204/41042
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
168 words
An automotive suspension system comprising a wheel support for supporting a wheel, and a wheel supporting member for connecting the wheel support to the vehicle body wherein the wheel supporting member includes front and rear resilient supporting means spaced from each other by a predetermined distance in the longitudinal direction of the vehicle body and the direction of the toe of the wheel is adapted to be changed according to deformation of the front and rear resilient supporting means, the load-deformation characteristics of the front and rear resilient supporting means being selected so that the ratio of the amount of deformation of the front resilient supporting means for a given load to that of the rear resilient supporting means for the same load changes according to the magnitude of external side forces acting on the wheel, thereby changing the steering characteristics according to the magnitude of external force, said deformation being that in right and left or width directions of the vehicle body caused by said side forces.
Claim 2
Dependent Claim
168 words
An automotive suspension system comprising a wheel support for supporting a wheel, and a wheel supporting member for connecting the wheel support to the vehicle body wherein the wheel supporting member includes front and rear resilient supporting means spaced from each other by a predetermined distance in the longitudinal direction of the vehicle body and the direction of the toe of the wheel is adapted to be changed according to deformation of the front and rear resilient supporting means, the load-deformation characteristics of the front and rear resilient supporting means being selected so that the ratio of the amount of deformation of the front resilient supporting means for a given load to that of the rear resilient supporting means for the same load changes according to the magnitude of external side forces acting on the wheel, thereby changing the steering characteristics according to the magnitude of external force, said deformation being that in right and left or width directions of the vehicle body caused by said side forces.
Claim 3
Dependent Claim
82 words
An automotive suspension system as defined in claim 1 in which the amount of deformation of one of the front and rear resilient supporting means for a given load is smaller than that of the other resilient supporting means when the load is smaller than a predetermined value, and the amount of deformation of said one resilient supporting means for a given load is larger than that of said other resilient supporting means when the load is larger than the predetermined value.
Claim 4
Dependent Claim
52 words
An automotive suspension system as defined in claim 2 in which the load-deformation characteristics of the front and rear resilient supporting means are selected to change the direction of the toe of the wheel so that understeer tendency is weakened when the side force acting on the wheel exceeds a predetermined value.
Claim 5
Dependent Claim
62 words
An automotive suspension system as defined in claim 3 in which said wheel is a rear wheel and the ratio of the amount of deformation of the front resilient supporting means for a given load to that of the rear resilient supporting means for the same load is larger when said external force is small than when the external force is large.
Claim 6
Dependent Claim
52 words
An automotive suspension system as defined in claim 2 in which the load-deformation characteristics of the front and rear resilient supporting means are selected to change the direction of the toe of the wheel so that understeer tendency is enhanced when the side force acting on the wheel exceeds a predetermined value.
Claim 7
Dependent Claim
62 words
An automotive suspension system as defined in claim 5 in which said wheel is a rear wheel and the ratio of the amount of deformation of the front resilient supporting means for a given load to that of the rear resilient supporting means for the same load is smaller when said external force is small than when the external force is large.
Claim 8
Dependent Claim
79 words
An automotive suspension system as defined in claim 2 in which said wheel supporting member includes at least one arm member and said front resilient supporting means is provided between at least one of the arm member and the vehicle body and between the arm member and the wheel support, and said rear resilient supporting means is provided between at least one of the arm member and the vehicle body and/or between the arm member and the wheel support.
Claim 9
Dependent Claim
42 words
An automotive suspension system as defined in claim 7 in which said arm member comprises front and rear lateral links extending in the transverse direction of the vehicle body and spaced from each other in the longitudinal direction of the vehicle body.
Claim 10
Dependent Claim
36 words
An automotive suspension system as defined in claim 8 in which the load-deformation characteristics of one of the front and rear resilient supporting means are nonlinear and those of the other resilient supporting means are linear.
Claim 11
Dependent Claim
62 words
An automotive suspension system as defined in claim 9 in which said wheel is a rear wheel and the ratio of the amount of deformation of the front resilient supporting means for a given load to that of the rear resilient supporting means for the same load is larger when said external force is small than when the external force is large.
Claim 12
Dependent Claim
29 words
An automotive suspension system as defined in claim 7 in which said front and rear resilient supporting means are disposed between the respective arm members and the wheel support.
Claim 13
Dependent Claim
35 words
An automotive suspension system as defined in claim 7 in which said resilient supporting means comprises inner and outer coaxial tubular members and a resilient rubber material body connecting the inner and outer tubular members.
Claim 14
Dependent Claim
32 words
An automotive suspension system as defined in claim 12 in which a pair of diametrically opposed hollow portions are formed in the rubber material body to extend over the entire length thereof.
Claim 15
Dependent Claim
90 words
An automotive suspension system as defined in claim 12 in which a pair of diametrically opposed central spaces is formed in the rubber material body to extend from the inner surface of the outer tubular member to the outer surface of the inner tubular member, and a pair of synthetic resin bodies is inserted into the respective central spaces, each synthetic resin body being harder than the rubber material body and being bonded to one of the inner tubular member and the outer tubular member but spaced from the other.
Claim 16
Dependent Claim
36 words
An automotive suspension system as defined in claim 1 in which the load-deformation characteristics of one of the front and rear resilient supporting means are nonlinear and those of the other resilient supporting means are linear.
Claim 17
Dependent Claim
52 words
An automotive suspension system as defined in claim 15 in which the load-deformation characteristics of the front and rear resilient supporting means are selected to change the direction of the toe of the wheel so that understeer tendency is weakened when the side force acting on the wheel exceeds a predetermined value.
Claim 18
Dependent Claim
62 words
An automotive suspension system as defined in claim 16 in which said wheel is a rear wheel and the ratio of the amount of deformation of the front resilient supporting means for a given load to that of the rear resilient supporting means for the same load is larger when said external force is small than when the external force is large.
Claim 19
Dependent Claim
52 words
An automotive suspension system as defined in claim 15 in which the load-deformation characteristics of the front and rear resilient supporting means are selected to change the direction of the toe of the wheel so that understeer tendency is enhanced when the side force acting on the wheel exceeds a predetermined value.
Claim 20
Dependent Claim
62 words
An automotive suspension system as defined in claim 18 in which said wheel is a rear wheel and the ratio of the amount of deformation of the front resilient supporting means for a given load to that of the rear resilient supporting means for the same load is smaller when said external force is small than when the external force is large.
Claim 21
Dependent Claim
79 words
An automotive suspension system as defined in claim 15 in which said wheel supporting member includes at least one arm member and said front resilient supporting means is provided between at least one of the arm member and the vehicle body and between the arm member and the wheel support, and said rear resilient supporting means is provided between at least one of the arm member and the vehicle body and between the arm member and the wheel support.
References Cited (Backward Citations)
US3147964A
Cited
US3892284A
Cited
US4139246A
Cited
US4269432A
Cited
US4537420A
Cited
US4457536A
Cited
US4513990A
Cited
US4530514A
Cited
US4542920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-10 | 1990-05-12 | 1990-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-10 | 1994-05-12 | 1994-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-10 | 1998-05-12 | 1998-11-11 | $7700.00 | Window Closed / Lapsed |