Patent ID: 7632038

Claim:
Road finisher comprising: a vehicle having a vehicle chassis travelling with an undercarriage on a planum; and a bonding agent spraying system on the vehicle chassis, the spraying system comprising: at least two spraying facilities each for producing a continuous sprayed generally rectangular carpet on the planum, which at least two spraying facilities are offset to each other laterally to the vehicle travelling motion direction with at least one spraying facility in a front region of the vehicle and at least one spraying facility in a rear region of the vehicle behind the undercarriage, each spraying facility having at least a spraying nozzle; and a control device for setting a reference line transverse to the vehicle travelling direction at each of the start and end of the carpet to be sprayed, the control device selectively activating and deactivating the at least two spraying facilities in sequence to produce the sprayed carpet with front and rear boundaries which are continuous over the working width of the sprayed carpet and extend parallel to a respective reference line which is in front of or directly below the spraying facility which is the frontmost on the vehicle in the travelling motion direction by the control device for selectively activating and deactivating each spraying facility automatically and depending on the travelling motion first when the respective spraying facility in the front or rear regions of the vehicle has reached one of a predetermined distance from the or reaches the respective reference line at each of the start and end of the carpet, wherein as the components of the spraying system comprise: a first spraying facility arranged at an angle of 90° to the longitudinal axis of the road finisher in the front region of the road finisher for spraying an intermediate space between travelling lanes of an undercarriage, two further spraying facilities arranged at an angle of 90° with respect to the longitudinal axis of the road finisher in the rear region of the road finisher behind the travelling lanes to spray bonding agent on the travelling lanes, and two further spraying facilities situated outside of the travelling lanes between the front region and the rear region of the road finisher, and which two further spraying facilities either can be displaced laterally with respect to the longitudinal axis of the road finisher or can be pivoted relative to the longitudinal axis of the road finisher about axes substantially perpendicular to the planum, and wherein each of the spraying facilities comprises a plurality of spraying nozzles which are distributed in longitudinal direction of the respective spraying facility and which can be operated, sequentially or commonly.