Device and method to provide stabilized delivery of pressurized liquid

A nozzle body for stabilizing a delivery opening of a hose while said hose delivers liquid under pressure to a delivery location, and when said nozzle body is attached to said hose in a manner leaving it free to rotate about an axis of rotation running through, parallel to, and oriented in the same direction as the liquid flow through said hose, comprising

• a plurality of nozzle ports enabling said liquid to pass through said nozzle body and be sprayed to said delivery location;
• said nozzle ports further comprising:
• rotation-inducing and centripetally-stabilizing nozzle port means causing said nozzle body to rotate about said axis of rotation, and further causing a centripetal stabilizing force to be applied to the rotation of said nozzle body, inward toward said axis of rotation, in reaction to the flow of said liquid out of said rotation-inducing and centripetally-stabilizing nozzle port means, thereby substantially cancelling centrifugal forces generated by said liquid flow out of said rotation-inducing and centripetally-stabilizing nozzle port means;
• thrust-inducing nozzle port means causing a rearward thrusting force to be applied to said nozzle body in reaction to the flow of liquid out of said thrust-inducing nozzle port means;
• and
• thrust-cancelling nozzle port means causing a forward thrusting force to be applied to said nozzle body in reaction to the flow of liquid out of said thrust-cancelling nozzle port means, with such magnitude so as to substantially cancel said rearward thrusting force;
• wherein
• said thrust-inducing nozzle port means further provides gyroscopic precession cancellation means for opposing and substantially cancelling gyroscopic precession induced by the rotation of said nozzle body;
• whereby
• all of the physical thrust, centrifugal and gyroscopic precessional forces due to the passage of said liquid through said hose and nozzle body substantially cancel one another, resulting in no net translational, centrifugal and gyroscopic precessional forces acting upon the nozzle body.

A method for stabilizing a delivery opening of a hose while said hose delivers a flow of liquid under pressure to a delivery location, comprising the steps of:

• attaching a nozzle body comprising a plurality of nozzle ports to said delivery opening of said hose with rotational coupling bearing means enabling said nozzle body to rotate about a geometric axis of rotation running through, parallel to, and oriented in the same direction as, the liquid flow;
• spraying said delivery location with said liquid by passing said liquid through said nozzle ports in said nozzle body;
• said nozzle ports further comprising:
• rotation-inducing and centripetally-stabilizing nozzle port means rotating said nozzle body about said axis of rotation, and further centripetally stabilizing the rotation of said nozzle body, in reaction to the flow of said liquid out of said rotation-inducing and centripetally-stabilizing nozzle port means;
• thrust-inducing nozzle port means inducing a rearward thrusting force to be applied to said nozzle body in reaction to the flow of liquid out of said thrust-inducing nozzle port means;
• and
• thrust-cancelling nozzle port means inducing a forward thrusting force to be applied to said nozzle body in reaction to the flow of liquid out of said thrust-cancelling nozzle port means, with such magnitude so as to substantially cancel said rearward thrusting force;
• wherein
• said thrust-inducing nozzle port means further provide gyroscopic precession cancellation means in reaction to the flow of liquid out of said nozzle thrust-inducing nozzle port means, for opposing and substantially cancelling gyroscopic precession induced by the rotation of said nozzle body;
• whereby
• all of the physical thrust, centrifugal and gyroscopic precessional forces due to passing said liquid through said hose and nozzle body substantially cancel one another, resulting in no net translational, centrifugal and gyroscopic precessional forces acting upon the nozzle body.

A rotary nozzle comprising a plurality of nozzle ports, wherein the location and orientation of said nozzle ports, in combination, and in reaction to a flow of liquid through said ports, provide means to:

• rotate said nozzle body about an axis of rotation;
• centripetally stabilize the rotation of said nozzle body;
• induce a rearward thrusting force upon said nozzle body;
• induce a forward thrusting force upon said nozzle body substantially cancelling said rearward thrusting force;
• and
• induce a gyroscopic precession cancellation force opposing and substantially cancelling gyroscopic precession caused by the rotation of said nozzle body.

A method of stabilizing a firehose while fighting a fire and thereby supplanting the need for firefighting personnel to be present to stabilize said firehose, comprising the steps of:

• attaching a rotating nozzle body comprising a plurality of nozzle ports to said firehose, with rotational attachment means, enabling said nozzle body to rotate about a geometric axis of rotation running through, parallel to, and oriented in the same direction as, a liquid flow through said firehose;
• and
• spraying said liquid at said fire by passing said liquid from said firehose into said nozzle body and through said nozzle ports;
• the location and orientation of said nozzle ports, in combination, and in reaction to the flow of said liquid through said ports, further providing means for:
• rotating said nozzle body about said axis of rotation;
• centripetally stabilizing the rotation of said nozzle body;
• inducing a rearward thrusting force upon said nozzle body;
• and
• inducing a forward thrusting force upon said nozzle body substantially cancelling said rearward thrusting force.