Abstract: A fire fighting monitor includes a stationary element and a rotating element for directing a water stream at variable trajectories. Electrical components, such as drive motors, are mounted on the rotating element and are connected to electrical sources remote from the monitor. A wire management system is provided for the monitor that protects the electrical wiring while accommodating relative rotation between the stationary and rotating elements of the monitor. In one embodiment, the wire management system includes a two-piece wiring skirt with a first portion connected to the stationary element and a second portion connected to the rotating element. The two portions define a circumferential channel and associated openings for passage of a wiring cable. The cable incorporates a 180° bend within the channel that travels around the channel as the cable coils and un-coils within the channels of the two portions.

Abstract: A firefighting segmented monitor for redirecting a trajectory of a pressurized fluid discharge towards a target comprises a flowpath with minimum convolutions. The monitor flowpath comprises in series a stationary segment and three rotating segments including a lower segment, a middle segment and an upper segment connected in series each of which comprises a predetermined curvature. The lower segment swivels in one axis about the stationary segment. A nonorthogonal swivel is arranged on each end of the middle segment at the interfaces with the lower segment and the upper segment, and the swiveling of the middle and upper segments are synchronized with a single rotary input to produce an approximately planar elevational motion of the fluid discharge end of the monitor.

Abstract: A firefighting nozzle has a low-turbulence liquid flow channel that is directed outwardly by a baffle. Surrounding the flow channel is an annular concentrate chamber. The concentrate chamber leads from a concentrate inlet to a concentrate entry port on a rearward wall opposed to the baffle. Liquid flowing past the baffle draws concentrate through the concentrate entry port into the flow. The concentrate and liquid subsequently mix to produce fire-fighting foam.