An electrically-actuated variable pressure control system for use with flow-controlled liquid application systems. Direct acting solenoid valves are pulsed at varying frequencies and duty cycles0000change the resistance to flow encountered by the flow-controlled liquid application system. This pulsing solenoid valve technique preserves a high degree of accuracy and uniformity through a wide range of pressure control. This wide range of pressure control indirectly allows the flow-controlled liquid application system to operate over a wider range of flow control, yielding indirect benefits to performance and productivity. When the solenoid valves are attached to pressure-atomization spray nozzles, control over spray pattern and droplet size is further achieved.

A sealant dispenser comprising a chassis adapted to carry a supply of sealant dispensable through a nozzle; at least one drive wheel to directionally propel said chassis; and a detection system carried by said chassis to determine a location to dispense sealant through said nozzle and controlling direction of said at least one drive wheel to position said nozzle.

A sealant dispenser comprising a chassis adapted to carry a supply of sealant dispensable through a nozzle; at least one drive wheel to directionally propel said chassis; and a detection system carried by said chassis to determine a location to dispense sealant through said nozzle and controlling direction of said at least one drive wheel to position said nozzle.

An agricultural vehicle includes a chassis, wheels supporting the chassis for moving the vehicle, an application system supported by the chassis and including a product tank storing a volume of agricultural product for delivery onto an agricultural field, and an application boom configured to deliver the agricultural product to the agricultural field. The application boom includes a boom arm segment having a longitudinal tube, an elongated structure coupled to the longitudinal tube, and an elastomeric bonding material affixing the longitudinal tube and the elongated structure.

A cable driven irrigation device has a frame that acts as a manifold to supply a sprinkler head and a separate spray nozzle. The frame is supplied with an externally triggered latching valve. The valve is held in the open position by a spring and has an internal flap that enters the flow of water through the valve when the external trigger is moved. The water flow moves the flap to the closed position and holds it there until the water pressure is removed. The spray nozzle dispenses water onto an exposed turbine which drives a gearbox. The gearbox is coupled to a spool which can wind up a cord. The spool being wound is what pulls the sprinkler along. A knot near the end of the cord engages the external trigger to stop the flow of water into the frame.

Apparatus for blending and applying plural substances including aggregate onto an environmental substrate is shown and described. The apparatus includes optionally a single power plant, plural pumps each fed by a respective hopper, and a blender blending pumped materials together. Dispensing ratios of the two pumps are mutually adjustable. An onboard air compressor delivers compressed air for atomizing blended materials as they are dispensed with the aggregate. Because materials may be curable or hardenable, flushing is enabled. The apparatus may be a free standing wheeled device.

Apparatus for blending and applying plural substances including aggregate onto an environmental substrate is shown and described. The apparatus includes optionally a single power plant, plural pumps each fed by a respective hopper, and a blender blending pumped materials together. Dispensing ratios of the two pumps are mutually adjustable. An onboard air compressor delivers compressed air for atomizing blended materials as they are dispensed with the aggregate. Because materials may be curable or hardenable, flushing is enabled. The apparatus may be a free standing wheeled device.

An intelligent, automated system for loading agricultural product application equipment is provided in which a control system can determine a necessary amount of product for completing a field operation and can automatically couple with a tendering system to receive such product at an optimal time and location. The control system can determine a current amount of product, a projected amount of product necessary to complete a field operation and a refill amount of product from the current amount and the projected amount, then transmit the refill amount to the tender. The control system can further determine whether a position of the equipment relative to the tender is within a threshold, and whether an intake coupler of the equipment is connected to a supply coupler of the tender, and can control valve(s) to open and close channel(s) for loading fluid into the storage tank.

An intelligent, automated system for loading agricultural product application equipment is provided in which a control system can determine a necessary amount of product for completing a field operation and can automatically couple with a tendering system to receive such product at an optimal time and location. The control system can determine a current amount of product, a projected amount of product necessary to complete a field operation and a refill amount of product from the current amount and the projected amount, then transmit the refill amount to the tender. The control system can further determine whether a position of the equipment relative to the tender is within a threshold, and whether an intake coupler of the equipment is connected to a supply coupler of the tender, and can control valve(s) to open and close channel(s) for loading fluid into the storage tank.

An intelligent, automated system for loading agricultural product application equipment is provided in which a control system can determine a necessary amount of product for completing a field operation and can automatically couple with a tendering system to receive such product at an optimal time and location. The control system can determine a current amount of product, a projected amount of product necessary to complete a field operation and a refill amount of product from the current amount and the projected amount, then transmit the refill amount to the tender. The control system can further determine whether a position of the equipment relative to the tender is within a threshold, and whether an intake coupler of the equipment is connected to a supply coupler of the tender, and can control valve(s) to open and close channel(s) for loading fluid into the storage tank.