US3910601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extension module for a vehicle to be incorporated in a trailer system
Assignee: NICOLAS EQUIPEMENT
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Filing: 1974-07-29
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Granted: 1975-10-07
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Expires: 1994-07-29
Abstract
Abstract An extension module for a tractor or trailer of a heavy duty trailer system has a chassis supported by a row of axles through a suspension of low stiffness as compared to the suspension of the tractor or trailer. The module is connected to the tractor or trailer by a vertical pivot which only allows for rotation of the module with respect to the tractor or trailer about a vertical axis.
Inventors
- 👤 Jean-Jacques Michaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:04
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/06; B62D53/067; B60; B60P; B60P3/00; B60P3/06; B60P3/07; B62D33/00; B62D33/02; B62D61/00; B62D61/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
95 words
In a trailer system including a heavy duty vehicle provided with several rows of n axles, n being an integer at least equal to 1, an extension module for said vehicle having a chassis supported by a row of n axles through a suspension of low stiffness as compared to the suspension of said vehicle, and pivot means for coupling the module and the vehicle for pivotal movement of the module about a vertical axis located in the longitudinal midplane of the vehicle at the rear thereof and against pivotal movement about a horizontal axis.
Claim 2
Dependent Claim
95 words
In a trailer system including a heavy duty vehicle provided with several rows of n axles, n being an integer at least equal to 1, an extension module for said vehicle having a chassis supported by a row of n axles through a suspension of low stiffness as compared to the suspension of said vehicle, and pivot means for coupling the module and the vehicle for pivotal movement of the module about a vertical axis located in the longitudinal midplane of the vehicle at the rear thereof and against pivotal movement about a horizontal axis.
Claim 3
Dependent Claim
40 words
Trailer system according to claim 1, wherein the n axles of the extension module are provided with fluid pressure suspension jacks placed in communication for the ground support of the module to be equivalent to a support at one point.
Claim 4
Dependent Claim
27 words
Trailer system according to claim 1, wherein said module is provided with lateral support props, adjustable in heigth, situated opposite the pivot with respect to said axles.
Claim 5
Dependent Claim
55 words
Trailer system according to claim 1, having longitudinal fluid pressure jacks, each comprising a cylinder carried by said module on a respective side thereof, piston means reciprocably mounted in said jack for abutting connection with said vehicle, and means for controlling said jacks for forced angular movement of the module with respect to said vehicle.
Claim 6
Dependent Claim
55 words
Trailer system according to claim 1, wherein said vehicle is constituted by a semi-trailer coupled to a tractor, and the semi-trailer comprises a single row of two walking beams each separately pivotally connected to a chassis of the semi-trailer with two axles, constituting, with the row of axles of the module, a substantially isostatic suspension.
Claim 7
Dependent Claim
19 words
Trailer system according to claim 5, wherein the module and semi-trailer are provided with identical loading ramp articulation ears.
Claim 8
Dependent Claim
23 words
Trailer system according to claim 5, having a removable support plate, connected to the semi-trailer against rotation and slidably supported by the module.
Claim 9
Dependent Claim
29 words
Trailer system according to claim 7, wherein the plate has a front vertical bend and the semi-trailer has a rear channel for receiving said bend and supporting the plate.
Claim 10
Dependent Claim
33 words
Trailer system according to claim 7, wherein said plate is provided with a coating of material of low coefficient of friction on its lower surface in contact with the chassis of the module.
Claim 11
Dependent Claim
20 words
Trailer system according to claim 1, wherein said extension module is connected to a tractoR towing a trailer or semi-trailer.
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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |