In accordance with one aspect of the present invention, a modular screed assembly attachment for an asphalt paving machine having a main screed unit, includes a support assembly that is detachably connectable to the main screed unit, a movable carriage slidably mounted on the support assembly, and a platform assembly movably connected to the movable carriage. The modular screed assembly attachment also includes means for moving the carriage between a position adjacent the main screed unit and a position spaced from the main screed unit, and means for selectively positioning the platform assembly elevationally with respect to the carriage.

Screed assembly for an asphalt paving machine

of EP0509877The device consists of a motorised mobile unit (1) comprising, from the front towards the rear in its direction of travel on the road surface, a means (8) for receiving hot bituminous mixtures, a device for transferring the hot bituminous mixtures towards the rear of the mobile unit (1), a device (16) for spreading the bituminous mixtures and a compacting and smoothing table (17) as well as a spraybar (18) for spraying bitumen emulsion, which can extend in the transverse direction. The extensible spraybar (18), consisting of two spraybar elements (18a, 18b) which can move relative to each other in the transverse direction, is placed at the rear part of the mobile unit (1), in front of the device (16) for spreading the bituminous mixtures, with a spacing of less than one metre. The spraybar comprises an additional means for spraying and measuring out bituminous liquid in the interface zone between the two spraybar elements (18a, 18b).

Device for resurfacing a road by successive spreading of an adhesive layer and a hot asphalt layer on the road surface.

The invention relates to a device for spreading a bonding emulsion for bituminous coated materials, a bituminous fluid substance or a similar fluid substance onto the surface of a road, comprising, on a mobile machine (1), spreading spray bars (14, 15) associated with spraying nozzles (17, 18) and with circuits for supplying the said nozzles, the said spray bars (14, 15) being capable of moving with respect to the said mobile machine (1) transversely to the direction of travel of the latter, and being associated with driving means (19,20) intended to drive them to move during the spreading operation in a to-and-fro motion, the said nozzles (17, 18) thus producing continuous complementary dynamic spread layers on the surface of the road, the to-and-fro strokes of some of the said spray bars being adjustable as a function of the width over which it is desired to spread.

Device for distributing a bonding emulsion for bituminous coated materials or similar fluids, and road making machine comprising such a device

Apparatus for spreading a bonding emulsion for road asphalt, a bituminous fluid substance or a similar fluid substance onto the surface of a road, comprising on a moving machine spreading booms associated with ejection nozzles as well as feed circuits for the nozzles, the booms being capable of moving transversely relative to the direction of movement of the moving machine, and being associated with motor mechanisms to drive them during spreading in a to-and-fro movement. The nozzles thereby perform continuous complementary dynamic spreading on the road surface, with the to-and-fro distance of travel of some of the booms being adjustable as a function of the road width over which spreading is required.

Apparatus for spreading a bonding emulsion, or similar fluids, and road-building machine

of EP0560360In accordance with one aspect of the present invention, a modular screed assembly attachment for an asphalt paving machine having a main screed unit, includes a support assembly that is detachably connectable to the main screed unit, a movable carriage slidably mounted on the support assembly, and a platform assembly movably connected to the movable carriage. The modular screed assembly attachment also includes means for moving the carriage between a position adjacent the main screed unit and a position spaced from the main screed unit, and means for selectively positioning the platform assembly elevationally with respect to the carriage.

Modular screed assembly attachment for an asphalt paving machine

of EP0418105The screed (table) for compacting and finishing comprises a central element (11) and two lateral elements (12a, 12b) which are movable in the transverse direction relative to the central element (11). Each of the lateral parts (12a, 12b) of the compacting screed (table) carries a boom (18a, 18b) for spraying binder. The booms (18a, 18b) form a spraying assembly whose width is variable as a function of the width of the compacting screed (table). A trough (25), integral with one of the booms (18a) and arranged substantially over its entire length, makes it possible to recover the bitumen jets (22) of the boom (18a) in the overlap zone of length L between the booms (18a) and (18b).

Extensible screed for compacting and finishing roadcovering with liquid binder spreading means.

La table de compactage et de finissage compor­te un element central (11) et deux elements lateraux (12a, 12b) mobiles dans la direction transversale par rapport a l'element central (11). Chacune des parties laterales (12a, 12b) de la table de compactage porte une rampe de repandage de liant (18a, 18b). Les rampes (18a, 18b) constituent un ensemble de repandage a largeur variable en fonction de la largeur de la table de com­pactage. Une auge (25) solidaire de l'une des rampes (18b) et disposee substantiellement sur toute sa lon­gueur permet de recuperer les jets de bitume (22) de la rampe (18a) dans la zone de recouvrement de longueur L entre les rampes (18a) et (18b).

D Alimonte Serge

Papers

Extensible screed for compacting and finishing roadcovering with liquid binder spreading means.

Table de compactage et de finissage d'un revêtement routier à largeur de travail réglable comportant des moyens de répandage de liant liquide