Patent US3690688A successfully refreshed from Google Patents.
US3690688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automotive hydroelastic suspension with level correction
Assignee: Individual
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Filing: 1970-11-12
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Granted: 1972-09-12
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Expires: 1990-11-12
Abstract
Abstract Hydro-elastic suspension system of vehicle, comprising hydraulic receiving devices interposed between the body of the vehicle and the wheels, and for each train of wheels a hydraulic distributor connected to the corresponding hydraulic receiver and adapted to either connect said receivers to a source of fluid under pressure, or isolate them, or connect them to the exhaust, as well as a device for correcting the ground clearance of the vehicle body, this correcting device comprising an elastic operative connection, with delay-action means, disposed between the wheels of the vehicle and the corresponding distributor, characterized in that said elastic operative connection comprises a hydraulic system for transmitting the wheel movements to the movable members of said distributors, with hydraulic time-lag means.
Inventors
- 👤 Jacques Fleury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:25
CPC Classifications
B; B60; B60G; B60G21/00; B60G21/02; B60G21/06; B60G17/00; B60G17/02; B60G17/033
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
116 words
Hydro-elastic suspension system of vehicle, comprising hydraulic receiving devices interposed between the body of the vehicle and the wheels, and for each train of wheels a hydraulic distributor having movable members connected to the corresponding hydraulic receiver and adapted to either connect said receivers to a source of fluid under pressure, or isolate them, or connect them to the exhaust, and a correcting device for correcting the ground clearance of the vehicle body comprising an elastic operative connection having delay-action means disposed between the wheels of the vehicle and the corresponding distributor, said elastic operative connection comprising a hydraulic system for transmitting the wheel movements to the movable members of said distributors and hydraulic time-lag means.
Claim 2
Dependent Claim
116 words
Hydro-elastic suspension system of vehicle, comprising hydraulic receiving devices interposed between the body of the vehicle and the wheels, and for each train of wheels a hydraulic distributor having movable members connected to the corresponding hydraulic receiver and adapted to either connect said receivers to a source of fluid under pressure, or isolate them, or connect them to the exhaust, and a correcting device for correcting the ground clearance of the vehicle body comprising an elastic operative connection having delay-action means disposed between the wheels of the vehicle and the corresponding distributor, said elastic operative connection comprising a hydraulic system for transmitting the wheel movements to the movable members of said distributors and hydraulic time-lag means.
Claim 3
Dependent Claim
29 words
Hydro-elastic suspension system as set forth in claim 1 wherein a fluid reservoir is provided and said distributors are assembled into a common unit located adjacent said fluid reservoir.
Claim 4
Dependent Claim
49 words
Hydro-elastic suspension system as set forth in claim 1 wherein said hydraulic transmission comprises at least one manually-controlled variable-volume control vessel inserted between said time-lag means and said distributor, whereby the driver can preset at will the ground clearance of the body at one of said trains of wheels.
Claim 5
Dependent Claim
32 words
Hydro-elastic suspension system according to claim 1, wherein said hydraulic transmission comprises for each wheel of at least one train, a variable-capacity vessel for detecting the variation occurring in the ground clearance.
Claim 6
Dependent Claim
34 words
Hydro-elastic suspension system according to claim 1, wherein said hydraulic traNsmission comprises for each train of wheels a single ground-clearance detecting variable-capacity vessel connected to a lever disposed centrally of the anti-roll torsion bar.
Claim 7
Dependent Claim
33 words
Hydro-elastic suspension system according to claim 4 wherein said variable capacity vessel is connected by spring means to a movable member of the wheel suspension, said spring means constituting said elastic operative connection.
Claim 8
Dependent Claim
30 words
Hydro-elastic suspension system according to claim 2 wherein said distributors are mounted on the top of said fluid reservoir and comprise fluid return ducts opening dire directly into said reservoir.
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) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |