A front-boom sprayer is provided that includes a boom center section and lift arm arrangement that provides a field of view below the boom when the boom is in a raised state that is substantially free of view obstructions from torque tube or other crosswise-extending components. The lift arm arrangement may provide different link tube geometries so that the respective left and right pairs of upper and lower lift arms align with each other in the line of sight of the in-cab operator.

A front-boom sprayer is provided that includes a boom center section and lift arm arrangement that provides a field of view below the boom when the boom is in a raised state that is substantially free of view obstructions from torque tube or other crosswise-extending components. The lift arm arrangement may provide different link tube geometries so that the respective left and right pairs of upper and lower lift arms align with each other in the line of sight of the in-cab operator.

A sprayer boom support for an agricultural sprayer including two articulated arms that are coupled in an articulated manner on both sides of the sprayer, wherein each articulated arm is comprised of bar sections that are formed in a composite material consisting of a reinforcing agent chosen from carbon fibre, fibreglass, aramid fibre, boron fibre or a combination thereof, and a matrix of epoxy, vinyl ester, phenolic or polyester resin, the bar sections having a tube geometry with a substantially rectangular cross section with rounded vertices and arched sides, the length of two of its equal sides being constant along the bar section.

The invention refers to a spraying device (10) for an agricultural sprayer (100), comprising a distributor linkage (12) on which multiple dispensing elements (22) for dispensing a spray liquid are arranged, an active vibration reduction device (24) which is designed to actively reduce vibrations of the distributor linkage (12), and a dispensing quantity controller (26) which is designed to adapt the spray liquid dispensing quantity (AM) of individual, grouped or all of the dispensing elements (22) to vibrations of the distributor linkage (12).

A spray boom includes a body having a length defined between a first end and a second end thereof. The body is formed by a plurality of layers of composite material adapted to be molded together to form an inner surface and an outer surface. An internal cavity is defined in the body internally of the inner surface. A light-emitting system is integrally formed in the body in an outer layer thereof or at a location between the inner surface and the outer surface. The light-emitting downsystem has an on state and an off state in which it is adapted to emit a light when in the on state.

A liquid spraying system having an elongated liquid supply boom and a plurality of spray nozzle assemblies. The spray nozzle assemblies have a compact design with a nozzle body having a liquid inlet and a first spray nozzle carrying liquid outlet section on opposite upper and lower sides, second and third spray nozzle carrying liquid outlet sections disposed in transverse relation to the supply boom; and first and second check valve supporting sections disposed parallel to the liquid supply boom. A first of check valves is operable for controlling liquid flow from the supply boom to one or both of the second and third spray nozzles, and a second check valve is operable for controlling liquid flow from said liquid inlet to said first spray nozzle. The illustrated check valves are operable in response to the pressure of the supply liquid.

An irrigation system broadly comprising a number of irrigation spans and a control system configured to operate single speed drive motors of the irrigation spans in a start-up mode, full speed mode, and wind-down mode. In the start-up mode, the motor controller gradually increases the drive motor speed from 0 rpms to a full speed by ramping a voltage applied to the drive motor from a starting voltage to a full speed voltage according to a start-up voltage profile over a start-up time interval. In the full speed mode, the motor controller operates the drive motor at a full speed voltage. In the wind-down mode, the motor controller gradually decreases the drive motor speed from full speed to 0 rpms by ramping the voltage applied to the drive motor from the full speed voltage to an ending voltage according to a wind-down voltage profile over a wind-down time interval.

A method of operating a fluid sprayer includes dispersing a first fluid selected from a group consisting of larvicide, adulticide, and a barrier repellant from the fluid sprayer with a first nozzle assembly at a first volumetric flow rate, replacing the first nozzle assembly with a second nozzle assembly, and dispersing a second fluid selected from the group from the fluid sprayer with the second nozzle assembly at a second volumetric flow rate different than the first volumetric flow rate.

A modular element for the manufacturing of an arm or of an arm segment of a spray bar provided with spray nozzles, including a first profile determining a longitudinal housing open downwards and at each of its longitudinal ends. A reinforcement is disposed above the first profile in such a way that the respective longitudinal axes of the reinforcement and of the first profile belong to the vertical plane P of longitudinal symmetry of said modular element. A plurality of stiffeners longitudinally connect at least the first profile and the reinforcement to each other, and two plates are disposed at one of the longitudinal ends of said first profile and laterally connect at least the longitudinal ends of the first profile and of the reinforcement to each other.

An articulation disposed between two adjacent segments of an arm of a spray bar, including a number of linking members connecting the contiguous ends of two adjacent segments to each other, each linking member being assembled, on the one hand, at one of its ends onto one of said contiguous ends by a ball joint and at its other end onto the other of said contiguous ends by a link allowing, on the one hand, the movement of said linking member with respect to the associated contiguous end in a direction parallel to the longitudinal axis of the associated segment and, on the other hand, the blocking of linking member in a given position.