Hydraulically controlled nozzle

Claim 2

A hydraulically operated, remotely controllable nozzle comprising: a tubular structure having a fluid inlet and a fluid outlet, flow control means having a tubular section and movable in a first direction for increasing the flow rate through said outlet and movable in a second direction for decreasing the flow rate through said outlet, remotely operable hydraulically actuated means for moving said flow control means in both of said directions, pattern control means having a tubular section and movable in a first direction for increasing the angle of spray emerging from said outlet and movable in a second direction for decreasing the angle of spray emerging from said outlet, and remotely operable hydraulically actuated means for moving said pattern control means in both direcTions, said remotely operable hydraulically actuated means being operable independently to change the flow rate without affecting the angle of spray, and vice versa, said tubular sections being concentric and being axially movable with respect to each other.

Claim 3

A nozzle as set forth in claim 1 including first valve means for controlling the means for moving said flow control means and second valve means for controlling the means for moving said pattern control means.

Claim 4

A nozzle as set forth in claim 1 in which a valve member is carried by said tubular structure, said flow control means including means defining an annular valve seat cooperating with said valve member to control the quantity of flow through said outlet; and wherein movement of said flow control means shifts said valve seat relative to said valve member.

Claim 5

A nozzle as set forth in claim 3 in which said pattern control means tubular section is a tubular sleeve mounted for movement axially of said tubular structure outwardly of said valve seat.

Claim 6

A nozzle comprising: a first tubular member having means for connecting the member to a source of liquid under pressure; a second tubular member mounted for axial movement relative to said first member; cooperating flow controlling means on said first and second members for varying the flow of liquid through said nozzle in response to movement of said second member relative to said first member; means on said first and second members defining a first chamber; means for establishing communication between a source of fluid under pressure and said first chamber for moving said second member in a flow increasing direction; means on said first and second members defining a second chamber; means for establishing communication between a source of fluid under pressure and said second chamber for moving said second member in a flow decreasing direction; a third tubular member mounted for axial movement relative to said second member for varying the pattern of flow emerging from said nozzle; means on said second and third members defining a third chamber; means for establishing communication between a source of fluid under pressure and said third chamber for moving said third member in a direction to decrease the angle of spray emerging from said nozzle; means on said second and third members defining a fourth chamber; and means for establishing communication between a source of fluid under pressure and said fourth chamber for moving said third member in a direction to increase the angle of spray emerging from said nozzle.

Claim 7

A nozzle comprising: a first tubular member having means for connecting the member to a source of liquid under pressure; a second tubular member mounted for axial movement relative to said first member; cooperating flow controlling means on said first and second members for varying the flow of liquid through said nozzle in response to movement of said second member relative to said first member; means on said first and second members defining a first chamber; means for establishing communication between a source of fluid under pressure and said first chamber for moving said second member in a flow increasing direction; means on said first and second members defining a second chamber; means for establishing communication between a source of fluid under pressure and said second chamber for moving said second member in a flow decreasing direction; a third tubular member mounted for axial movement relative to said second member for varying the pattern of flow emerging from said nozzle; means on said second and third members defining a third chamber; means for establishing communication between a source of fluid under pressure and said third chamber for moving said third member in a direction to decrease the angle of spray emerging from said nozzle; means on said second and third members defining a fourth chamber; and means for establishing communication between a source of fluid under pressure and said fourth chamber for moving said third member in a direction to increase the angle of spray emerging from said nozzle.

Claim 8

A nozzle as set forth in claim 5 wherein said second tubular member is mounted telescopically outwardly of said first tubular member, said first and second members having opposed annular shoulders thereon defining said first chamber therebetween.

Claim 9

A nozzle as set forth in claim 5 wherein said third tubular member is mounted telescopically outwardly of said second tubular member, said second and third members having opposed annular shoulders thereon defining said third chamber therebetween.

Claim 10

A nozzle as set forth in claim 5 wherein said second and third chambers are in communication with one another.

Claim 11

A nozzle as set forth in claim 5 wherein said second tubular member is mounted telescopically outwardly of said first tubular member, said first and second members having opposed annular shoulders therein defining said second chamber therebetween.

Claim 12

A nozzle as set forth in claim 5 wherein said third tubular member is mounted telescopically outwardly of said second tubular member, said second and third members having opposed annular shoulders therein defining said fourth chamber therebetween.

Claim 13

For use with a fire fighting apparatus having a boom structure, and a fluid delivery means associated with said boom structure, an improved nozzle at the end of said boom structure and having a fluid inlet communicating with said fluid delivery means and a fluid outlet, said nozzle having flow control means having a tubular section and movable in a first direction for increasing the flow rate through said outlet and movable in a a second direction for decreasing the flow rate through said outlet, remotely operable hydraulically actuated means for moving said flow control means in both of said directions, said nozzle having pattern control means having a tubular section and movable in a first direction for increasing the angle of spray emerging from said outlet and movable in a second direction for decreasing the angle of spray emerging from said outlet, and remotely operable hydraulically actuated means for moving said pattern control means in both directions, said remotely operable hydraulically actuated means being operable independently to change the flow rate without affecting the angle of spray, and vice versa, said tubular sections being concentric and being axially movable with respect to each other.

Claim 14

For use with a fire fighting apparatus having a boom structure, and a fluid delivery means associated with said boom structure, an improved nozzle at the end of said boom structure and having a fluid inlet communicating with said fluid delivery means and a fluid outlet, said nozzle having flow control means having a tubular section and movable in a first direction for increasing the flow rate through said outlet and movable in a a second direction for decreasing the flow rate through said outlet, remotely operable hydraulically actuated means for moving said flow control means in both of said directions, said nozzle having pattern control means having a tubular section and movable in a first direction for increasing the angle of spray emerging from said outlet and movable in a second direction for decreasing the angle of spray emerging from said outlet, and remotely operable hydraulically actuated means for moving said pattern control means in both directions, said remotely operable hydraulically actuated means being operable independently to change the flow rate without affecting the angle of spray, and vice versa, said tubular sections being concentric and being axially movable with respect to each other.

Claim 15

Firefighting apparatus as set forth in claim 11 wherein said boom structure includes first and second articulated boom sections mounted for movement relative to one another.

Claim 16

Fire fighting apparatus as set forth in claim 12 wherein said boom sections are carried upon a motive vehicle.