Abstract: An agricultural implement includes the calibration of liquid fertilizer distribution for an agricultural implement. The calibration system measures the level of the liquid fertilizer or utilizes a known volume in a container and the pressure of the liquid fertilizer. The system uses the level and pressure to calculate the density of the liquid fertilizer, which helps achieve more consistent fertilizer application. Additionally, the density of the liquid fertilizer can be used to more accurately measure the tank level of a particular tank. The system can include a tilt sensor and valves so that when the agricultural implement is traversing a hill or otherwise rough terrain, the system can accurately measure tank level and selectively draw liquid fertilizer from a particular tank or tanks to mitigate spillage. The system also can measure and monitor the tank level of the tank or tanks and automatically fill the tank or tanks based on the measured tank level.

Abstract: A drawback system is used with a liquid fertilizer distribution system to be used with agricultural implements. The drawback system may include a two-way, reversible pump that allows liquid fertilizer material to be transported from a system source or toward a system source. The drawback system allows liquid fertilizer that is not applied to an agricultural field to be cleared from piping, conduits, and/or other components of a liquid fertilizer system and drawn back into a holding chamber. The drawback system may also comprise a positive displacement pump in communication with a plurality of valves wherein manipulation of the valves can control the direction of the flow of liquid fertilizer, either from or toward a system/fluid source.

Abstract: A liquid fertilizer system is used with agricultural implements to apply liquid fertilizer, in a desired amount, to a field and/or crop. The fertilizer system relies on system pressure to regulate the flow of the liquid fertilizer through and out of the system. The pressure is regulated, at least in part, by a motorized relief valve, which may be a pressure regulator that is modulated with a spring. The spring provides a nuanced adjustment mechanism that responds quickly to changes, and which is responsive to more minute changes to the system.

Abstract: A graphical user interface for configuring policies which manage traffic over a computer network. An implementation of the invention disassociates the definition of traffic policies from their logical and physical application to the network and its constituent devices. One implementation allows a network manager to define traffic policies through user inputs such as dragging and dropping rule templates with a mouse. An implementation further allows such policies to be logically applied to parts and subparts of the computer network through the dragging and dropping of the policies and defined network endpoints. One implementation of the invention then provides multiple views of these policies as applied.

Abstract: A set trigger assembly that enables a user of a firearm with a trigger, return spring plunger, and a return spring plunger spring to modify the trigger mechanism on-demand to reduce the trigger pressure required to fire the firearm by enabling the user to retract the return spring plunger and then return the return spring plunger to its initial position by insertion of a lever which is used to apply force to a return spring plunger so as to force the return spring plunger away from the trigger.

Abstract: A set trigger assembly that enables a user of a firearm with a trigger, return spring plunger, and a return spring plunger spring to modify the trigger mechanism on-demand to reduce the trigger pressure required to fire the firearm by enabling the user to retract the return spring plunger and then return the return spring plunger to its initial position by insertion of a lever which is used to apply force to a return spring plunger so as to force the return spring plunger away from the trigger.