US4726604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rear suspension controller
Assignee: Toyota Motor Corp
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Filing: 1986-01-24
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Granted: 1988-02-23
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Expires: 2006-01-24
Abstract
Abstract A near rear suspension controller for a vehicle having a suspension between a vehicle body and a rear wheel includes: a front height detection section for measuring a distance between the vehicle body and a front wheel for generating a front height signal; a judgement section for generating a judgment result signal when the front height signal exceeds a predetermined range; and a rear height control section for increasing the rear vehicle height when it receives the judgment result signal.
Inventors
- 👤 Ken Asami
- 👤 Toshio Onuma
- 👤 Kaoru Ohashi
- 👤 Shuuichi Buma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:37
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/015; B60G17/016; B60G17/0165; B60G21/00; B60G21/02; B60G21/04; B60G21/05; B60G21/055; B60G21/0551; B60G21/0553; B60G21/0556
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
97 words
A rear suspension controller for a vehicle having a suspension between a vehicle body and a rear wheel comprising: a front height detection means for measuring a distance between the vehicle body and a front wheel for generating a front height signal indicating the height of the vehicle; a judgment means for generating a judgment result signal when the front height signal exceeds a predetermined range, said predetermined range being independent of a rear height value; and a rear height control means for increasing the rear vehicle height when the judgment means generates the judgment result signal.
Claim 2
Dependent Claim
97 words
A rear suspension controller for a vehicle having a suspension between a vehicle body and a rear wheel comprising: a front height detection means for measuring a distance between the vehicle body and a front wheel for generating a front height signal indicating the height of the vehicle; a judgment means for generating a judgment result signal when the front height signal exceeds a predetermined range, said predetermined range being independent of a rear height value; and a rear height control means for increasing the rear vehicle height when the judgment means generates the judgment result signal.
Claim 3
Dependent Claim
31 words
A rear suspension controller according to claim 1, further comprising a rear suspension characteristic alteration means for controlling the rear suspension characteristic when the judgment means generates the judgment result signal.
Claim 4
Dependent Claim
24 words
A rear suspension controller according to claim 2, wherein the rear suspension characteristic alteration means controls the spring constant of rear air suspensions (S2Lc).
Claim 5
Dependent Claim
24 words
A rear suspension controller according to claim 2, wherein the rear suspension characteristic alteration means controls the damping force of rear shock absorbers (S2Lc).
Claim 6
Dependent Claim
27 words
A rear suspension controller according to claim 2, wherein the rear suspension characteristic alteration means controls the stiffness of bushes fitted in joints of rear control arms.
Claim 7
Dependent Claim
23 words
A rear suspension controller according to claim 2, wherein the rear suspension characteristic alteration means controls the compliance of a rear stabilizer 1410).
Claim 8
Dependent Claim
37 words
A rear suspension controller according to claim 1, wherein the rear height control means changes the rear vehicle height to the normal condition after a predetermined time interval has elapsed since the judgment result signal is generated.
Claim 9
Dependent Claim
19 words
A rear suspension controller according to claim 7, wherein the time interval is determined by a current vehicle speed.
Claim 10
Dependent Claim
32 words
A rear suspension controller according to claim 1, wherein the rear height control means generates an actuator drive signal to control air suspensions when the front height signal exceeds the predetermined range.
Claim 11
Dependent Claim
27 words
A rear suspension controller according to claim 1, wherein the rear vehicle height control means increases the rear vehicle height by charging air into rear air suspensions.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-22 | 1991-08-24 | 1992-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-22 | 1995-08-24 | 1996-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-22 | 1999-08-24 | 2000-02-23 | $7700.00 | Window Closed / Lapsed |