Patent ID: 8348178
Filing Date: 2013-01-08
Classification: B64F

Abstract:
1. A spraying installation on a chassis of a truck, the truck having a top, two sides defining two vertical planes, a front end and a rear end defining a lengthwise direction of the truck between said front end and said rear end, the spraying installation comprising: an elevation boom having a free end and an opposite end attached to the chassis of the truck; a telescopic arm, having a first free end and a second end attached to the free end of said elevation boom, the telescopic arm being movable to be supported in a first essentially horizontal transport position extending in the lengthwise direction of the truck and above the top of the truck, the telescopic arm being movable to also be supported in at least one other, active position which is higher than the transport position; the telescopic arm being configured to stay essentially horizontal during movement between said first essentially horizontal transport position and said at least one other active position, said movement further being confined to a space between said vertical planes defined by the two sides of the truck; a spraying nozzle, attached at the first free end of the telescopic arm; said elevation boom being attached to the telescopic arm by a linkage system, said linkage system comprising a parallelogram construction having at least one pair of parallel beams, a bottom bracket and a top bracket, each of said parallel beams being connected for rotation about an axis at one end to the bottom bracket and about another axis at the other end to the top bracket, the top bracket further being rotatably linked to the telescopic arm for rotation of the telescopic arm about an axis parallel to the said axes of the connections of the beams to the brackets, and the bottom bracket further being rotatably linked to the elevation boom, such that movement of the elevation boom, acting through the linkage system, results in a movement of the telescopic arm between said horizontal transport position and said at least one other, active position; and an operator platform attached to the bottom bracket of the linkage system.