US Patent 7240858 Trigger mechanism for watering nozzles

A trigger mechanism for watering nozzles includes a trigger whose lower end is pivotably connected to the handle and an activation rod has a first end inserted into a tube in the handle and a second end of the activation rod is in contact with the inside of the trigger. The first end of the activation rod may push a valve member in the tubular path in the handle to allow water to flow through the path and enter the barrel of the watering nozzle. The trigger can be fixed at operation position by pulling a movable member located above the trigger.