Hose nozzle with discharge control

Claim 3

A fluid discharge control device comprising a nozzle, a conduit upon which said nozzle is fixed against removal therefrom, a first valve in said nozzle for regulation of the pressure of fluid passing through said nozzle, a second valve in said conduit for selectively shutting off the flow of fluid through said conduit to said nozzle, a third valve for prohibiting the reverse flow of fluid from said nozzle to a source of supply to which said conduit is attached, and means interconnecting said first and second valves so that said second valve is opened by manual actuation of said first valve.

Claim 4

A fluid discharge control device comprising a nozzle, a conduit upon which said nozzle is fixed against removal therefrom, a first valve in said nozzle for regulation of the pressure of fluid passing through said nozzle, a second valve in said conduit for selectively shutting off the flow of fluid through said conduit to said nozzle, a third valve for prohibiting the reverse flow of fluid from said nozzle to a source of supply to which said conduit is attached, and means interconnecting said first and second valves so that said second valve is opened by manual actuation of said first valve.

Claim 5

A fluid discharge control device comprising a conduit having means for attachment to a source of pressurized fluid at one end thereof and a nozzle at the other end thereof, means for prohibiting flow of fluid through said conduit in either direction, means for regulating the flow of fluid discharged through said nozzle, and means, interconnecting said flow regulating means and said flow prohibiting means, for selectively actuating said flow prohibiting means to allow fluid flow through said conduit only from the source toward the nozzle when said flow regulating means is manually actuated.

Claim 6

A fluid discharge control device comprising a conduit having means for attachment to a source of pressurized fluid at one end thereof and a nozzle at the other end thereof, means for prohibiting flow of fluid through said conduit in either direction, means for regulating the flow of fluid discharged through said nozzle, and means, interconnecting said flow regulating means and said flow prohibiting means, for selectively actuating said flow prohibiting means to allow fluid flow through said conduit only from the source toward the nozzle when said flow regulating means is manually actuated.

Claim 7

The device of claim 3 wherein said flow prohibiting means includes a pressure-actuated valve means and said interconnecting means comprises bleed-off means for relieving pressure which closes said valve means.

Claim 8

The device of claim 4 wherein said flow prohibiting means also includes check valve means for positively prohibiting flow of fluid toward said attachment means from said nozzle.

Claim 9

The device of claim 3 wherein said flow regulating means comprises valve means including a valve seat and a substantially spherical valve spool which cooperates with said valve seat to produce a progressive increase in the rate of fluid flow as said regulating means is progressively manually actuated.

Claim 12

A combination as set forth in claim 7 in which said flexible means is inside the conduit.

Claim 13

A combination as set forth in claim 7 in which said inlet valve is a fluid-pressure-actuated valve; in which said flexible means is a bleeder tube in fluid communication with the inlet valve for actuation thereof; and in which said control means controls fluid communication through the bleeder tube.

Claim 14

A combination as set forth in claim 9 in which said flexible bleeder tube is inside the conduit.

Claim 15

A combination as set forth in claim 7 which includes a second valve at the outlet end of the conduit to regulate the release of fluid from the conduit, said second valve being responsive to said manual control means for operation thereby.

Claim 16

A combination as set forth in claim 11 in which said inlet valve is a fluid-pressure-actuated valve controlled by bleeder action; in which said flexible means is a bleeder tube in fluid communication with the valve for actuation thereof; and in which said manual control means controls fluid communication through the bleeder tube.

Claim 17

A combination as set forth in claim 13 in which said second valve includes a valve seat member and includes a valve member operated by the manual control means, said valve member being movable through the valve seat member fron one side of the valve seat member at the normal first position of the master control means to the other side of of the valve seat member at the third position of the manual control means, the valve member registering with the valve seat member to restrict flow through the valve seat member at the second position of the manual control means.

Claim 18

A combination as set forth in claim 12 in which said manual control means is operable to advance from a normal first position to a second position and from the second position to a third position; in which said bleeder tube is closed at the normal first position of the manual control means and is open at the second and third positions of the manual control means; and in which said second valve is partially closed at the second position of the manual control means and is open at the first and third positions of the manual control means, whereby advancing the manual control means from its normal first position to its second position opens the flexible bleeder tube to open the inlet valve and partially closes the second valve for reduced fluid flow through the nozzle and advancing the manual control means from its second position to its third position keeps the inlet valve open and opens the second valve for maximum flow through the nozzle, and returning the manual control means to its normal first position closes the bleeder tube to close the inlet valve and opens the second valve for drainage of residual fluid from the conduit through the nozzle.

Claim 19

A combination as set forth in claim 13 which includes means to pinch the flexible tube in response to return of the manual control means to its first position.

Claim 20

A combination as set forth in claim 15 in which said valve member has a projection that extends through the valve seat member at the normal first position of the master control means, said projection engaging the flexible hose and pinching the flexible hose shut at the normal first position of the manual control means.

Claim 21

A combination as set forth in claim 16 in which said projection embraces an end portion of the flexible tube and cooperates with the valve seat member to pinch the flexible tube at the normal retracted postion of the manual control means.

Claim 22

A combination as set forth in claim 7 which includes anti-syphon means at the inlet end of the conduit; and which includes a check valVe at the inlet end of the conduit to prevent reverse flow through the conduit.

Claim 23

A combination as set forth in claim 18 in which the check valve has a hollow conical portion of elastomer pointing in the direction of normal fluid flow through the conduit, said conduit portion being split into two confronting tapered lips that are biased to close together.

Claim 24

A combination as set forth in claim 19 in which the anti-syphon means comprises a radial flange of the check valve; and in which the radial flange lies against and normally closes at least one vent port in the wall of the conduit and closes the vent port or ports in response to the creation of a vacuum on the upstream side of the check valve.

Claim 25

A combination as set forth in Claim 7 in which said inlet valve includes: a valve seat; a pressure chamber having a pressure-responsive movable wall cooperative with the valve seat to control flow through the valve; means to place said chamber in communication with the upstream side of the valve seat to create pressure in the chamber to force the movable wall against the valve seat to cut off flow through the valve; said flexible means for operation of the valve by remote control being in the form of a bleeder tube communicating with said chamber to release pressure from the chamber to cause the movable wall to retract from the valve seat; said manual control being operative to open and close the bleeder tube.

Claim 26

A combination as set forth in claim 21 in which the movable wall is a flexible diaphragm.

Claim 27

A combination as set forth in claim 22 in which the means to place the chamber in communication with the upstream side of the valve seat comprises a port in the diaphragm; and in which the port is lined with a type of material to which precipitates from the fluid are substantially non-adherent.

Claim 28

A combination as set forth in claim 21 in which the means to place the chamber in communication with the upstream side of the valve seat comprises a port in the diaphragm; and which includes a pin extending through the port to dislodge foreign material from the port in response to relative movement between the diaphragm and pin.

Claim 29

A combination as set forth in claim 24 in which the pin is free to rotate; and in which the pin has surfaces to cause the pin to be rotated by fluid flowing through the port along the pin, the pin being of a configuration to clean the port by its rotation.

Claim 30

A combination as set forth in claim 25 in which the pin has vanes extending through the port for the dual purpose of causing the pin to be rotated by the flowing fluid and of cleaning the port in response to the rotation of the pin.

Claim 31

A combination as set forth in claim 24 in which the portion of the pin that cooperates with the port when the diaphragm is in its closed position against the valve seat is of relatively small diameter for ample fluid flow through the port; and in which the portion of the pin that cooperates with the port when the diaphragm is at its open position spaced from the valve seat is of larger diameter to reduce fluid flow through the port.