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US3893680A
Expired / Lapsed
US
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Devices for limiting transversal leaning of vehicles
Assignee: NICOLAS EQUIPEMENT
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Filing: 1974-01-21
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Granted: 1975-07-08
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Expires: 1994-01-21
Abstract
Abstract A device for limiting the degree of transversal leaning of a heavy duty wheeled vehicle having two longitudinal side rows of independent wheel axles, each axle having a fluid ram for adjusting the height axis of the vehicle body above the ground. A sensor of the degree of leaning includes a weight member mounted for rotation about an axis parallel to the longitudinal axis of the vehicle and electrical switches symmetrically-positioned for one switch to be operated when the degree of leaning exceeds 3 percent. The switches control solenoid valves for appropriate supply or exhaust of the rams of one row of axles.
Inventors
- 👤 Roland Marcillat
- 👤 Gerard Mantoux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:46
CPC Classifications
B; B60; B60G; B60G17/00; B60G17/015; B60G17/019; B60G17/01908; B60G2300/00; B60G2300/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
214 words
A device for limiting the degree of transversal leaning of a vehicle having two longitudinal side rows of independent axles, each axle having a single-acting fluid ram for adjusting the vertical distance between the axis of the wheels of the axle and the vehicle body, said device comprising a sensor of the degree of leaning including a casing securely connected to the body and a weight member mounted in the casing for rotation about an axis parallel to the longitudinal axis of the vehicle, at least two electrical switches symmetricallypositioned with respect to a vertical line passing through said member axis each for operating one of said switches when the degree of leaning exceeds a predetermined value, said switches being arranged in an electrical circuit controlling solenoid valves which control supply and exhaust of the rams in one row at least, each said sensing switch being provided with means for resiliently urging said switch into one of its closed and open conditions, each switch being subjected to the action of a gas jet delivered by a nozzle carried by the casing, urging the switch into the other of said conditions, said weight member being constructed and arranged such as to interrupt one of said jets upon the degree of leaning exceeding said predetermined value.
Claim 2
Independent Claim
214 words
A device for limiting the degree of transversal leaning of a vehicle having two longitudinal side rows of independent axles, each axle having a single-acting fluid ram for adjusting the vertical distance between the axis of the wheels of the axle and the vehicle body, said device comprising a sensor of the degree of leaning including a casing securely connected to the body and a weight member mounted in the casing for rotation about an axis parallel to the longitudinal axis of the vehicle, at least two electrical switches symmetricallypositioned with respect to a vertical line passing through said member axis each for operating one of said switches when the degree of leaning exceeds a predetermined value, said switches being arranged in an electrical circuit controlling solenoid valves which control supply and exhaust of the rams in one row at least, each said sensing switch being provided with means for resiliently urging said switch into one of its closed and open conditions, each switch being subjected to the action of a gas jet delivered by a nozzle carried by the casing, urging the switch into the other of said conditions, said weight member being constructed and arranged such as to interrupt one of said jets upon the degree of leaning exceeding said predetermined value.
Claim 3
Dependent Claim
44 words
Device in accordance with claim 1, wherein the leaning sensor controls a solenoid valve which, upon activation thereof, causes fluid to escape from the ram of one row in an amount equal to that of fluid introduced into the rams of the other row.
Claim 4
Dependent Claim
50 words
Device in accordance with claim 2, wherein the solenoid valve controls a double acting driving cylinder connected to the piston of a second double acting cylinder formng a pump having one compartment connected to the rams of one row and the other compartment to the rams of the other row.
Claim 5
Dependent Claim
40 words
Device in accordance with claim 1, for vehicles having at least one medial line of independent axles, wherein the successive axles of the medial line or lines are connected alternately to corresponding axles of one and the other side lines.
Claim 6
Independent Claim
169 words
A device for limiting the degree of transversal leaning of a vehicle having two longitudinal side rows of independent axles, each axle having a single-acting fluid ram for adjusting the vertical distance between the axis of the wheels of the axle and the vehicle body, said device comprising a sensor of the degree of leaning including a casing securely connected to the body and a weight member mounted in the casing for rotation about an axis parallel to the longitudinal axis of the vehicle, at least two electrical switches symmetrically-positioned with respect to a vertical line passing through said member axis each for operating one of said switches when the degree of leaning exceeds a predetermined value, said switches being arranged in an elEctrical circuit controlling solenoid valves which control supply and exhaust of the rams in one row at least, wherein the sensor and the circuits are arranged to decrease the degree of leaning, upon exceeding said predetermined value, to a second predetermined value smaller than the first.
Claim 7
Independent Claim
169 words
A device for limiting the degree of transversal leaning of a vehicle having two longitudinal side rows of independent axles, each axle having a single-acting fluid ram for adjusting the vertical distance between the axis of the wheels of the axle and the vehicle body, said device comprising a sensor of the degree of leaning including a casing securely connected to the body and a weight member mounted in the casing for rotation about an axis parallel to the longitudinal axis of the vehicle, at least two electrical switches symmetrically-positioned with respect to a vertical line passing through said member axis each for operating one of said switches when the degree of leaning exceeds a predetermined value, said switches being arranged in an elEctrical circuit controlling solenoid valves which control supply and exhaust of the rams in one row at least, wherein the sensor and the circuits are arranged to decrease the degree of leaning, upon exceeding said predetermined value, to a second predetermined value smaller than the first.
Claim 8
Dependent Claim
61 words
Device in accordance with claim 5, wherein said sensor includes a third switch which is energized as soon as the degree of leaning exceeds said second predetermined value in either direction, each of the symmetrical switches being positioned in a circuit controlling a supply relay for the solenoid valve whereas the third switch is in a holding circuir of said relays.
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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) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |