High pressure fluid orbital spray nozzle

A nozzle assembly comprising:

• a hollow nozzle body fastened to a high pressure hose;
• a tubular shaft rotatably carried in the hollow nozzle body, the tubular shaft having a central axis;
• and
• a head member fastened to the tubular shaft, the head member having a central blind bore concentric with the central axis of the tubular shaft, a threaded tubular portion around the central blind bore merging with a rounded nozzle head portion, the rounded nozzle head portion having one port passing through a distal end of the rounded nozzle head portion from the central blind bore and a first lateral port passing from the central blind bore through a side of the rounded nozzle head portion at an offset from the central blind bore, and a second lateral port passing from the central blind bore through an opposite side of the rounded nozzle head portion, wherein high pressure fluid passing through the central blind bore and out of the head member through the one port and the first lateral port and the second lateral port cause an unbalanced motion of the nozzle assembly on the high pressure hose while the tubular shaft rotates with the head member within the hollow nozzle body.

A nozzle assembly comprising:

• a hollow nozzle body fastened to a high pressure hose;
• a tubular shaft rotatably carried in the hollow nozzle body, the tubular shaft having a central axis;
• and
• a head member fastened to the tubular shaft, the head member having a central blind bore concentric with the central axis of the tubular shaft, a threaded tubular portion around the central blind bore merging with a rounded nozzle head portion, the rounded nozzle head portion having a first lateral port passing from the central blind bore through a side of the rounded nozzle head portion at an offset from an axis of the central blind bore, wherein high pressure fluid passing through the central blind bore and out of the head member through the one port and the first lateral port cause an orbital unbalanced motion of the nozzle assembly on the high pressure hose while the tubular shaft rotates with the head member within the nozzle body.