Firefighting nozzle with foam injection system

A firefighting nozzle comprising a hollow nozzle body having:

• a) an open inlet end for receiving liquid from a hose at a variable rate of flow;
• b) an outlet end including a jet orifice, for discharging at least a portion of said liquid in the form of a circular solid stream having a variable diameter;
• c) jet control means disposed within said jet orifice for selectively varying said diameter, said jet control means including
• i) a valve body mounted for longitudinal translation within said nozzle body,
• ii) a valve seat formed proximate said outlet end of said nozzle body, and
• iii) drive means for moving said valve body relative said valve seat to vary said diameter;
• d) a grip for facilitating handling of said nozzle;
• and
• e) foam injection means for injecting foam concentrate into said solid stream at a low pressure point within said nozzle body, said foam injection means including
• i) a reservoir containing the foam concentrate,
• ii) passage means for conveying said foam concentrate from said reservoir to said nozzle, said passage means including an inlet communicating with said reservoir and an outlet located within said nozzle body,
• iii) a discharge assistant for driving said foam concentrate out of said reservoir, through said passage means, and out said outlet, the discharge assistant including
• a pump located within said grip, and
• drive means for driving said pump, and
• iv) foam control means for selectively controlling the injection of said foam concentrate into said stream.