Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
181 words
A pilot operated ball cock valve for controlling liquid in a tank, comprising a housing having a pressure chamber and evacuation chamber contained within said housing; first means contained within said housing for discharging fluid into the evacuation chamber from which fluid flows into the tank; diaphragm means mounted between the pressure chamber and evacuation chamber of said housing for closure upon said first means to prevent fluid flow into the evacuation chamber; a pilot valve having a valve member rotatably mounted in said housing having an internal fluid channel for communication with said first means and the pressure chamber upon sufficient rotation of said pilot valve, the valve member being cylindrical and being mounted in a bore in said housing, and sealing means sealing the valve member with respect to the bore; second means for rotating said pilot valve responsive to the height of fluid in a tank such that communication of said internal fluid channel with the pressure chamber transmits fluid pressure to said diaphragm means thereby closing said first means and preventing fluid discharge into the evacuation chamber.
Claim 2
Dependent Claim
181 words
A pilot operated ball cock valve for controlling liquid in a tank, comprising a housing having a pressure chamber and evacuation chamber contained within said housing; first means contained within said housing for discharging fluid into the evacuation chamber from which fluid flows into the tank; diaphragm means mounted between the pressure chamber and evacuation chamber of said housing for closure upon said first means to prevent fluid flow into the evacuation chamber; a pilot valve having a valve member rotatably mounted in said housing having an internal fluid channel for communication with said first means and the pressure chamber upon sufficient rotation of said pilot valve, the valve member being cylindrical and being mounted in a bore in said housing, and sealing means sealing the valve member with respect to the bore; second means for rotating said pilot valve responsive to the height of fluid in a tank such that communication of said internal fluid channel with the pressure chamber transmits fluid pressure to said diaphragm means thereby closing said first means and preventing fluid discharge into the evacuation chamber.
Claim 3
Dependent Claim
22 words
The pilot operated ball cock valve as recited in claim 1 further comprising an acoustic mounting means for reducing tank vibration noise.
Claim 4
Dependent Claim
40 words
The pilot operated ball cock valve as recited in claim 1 wherein said internal fluid channel includes a recess having a sealing element in its having a port movable with respect to a port having communication with said pressure chamber.
Claim 5
Dependent Claim
31 words
The pilot operated ball cock valve as recited in claim 3 further comprising a relief channel providing communication between said internal fluid channel of said pilot valve and said evacuation chamber.
Claim 6
Dependent Claim
40 words
The pilot operated ball cock valve as recited in claim 4 wherein the pilot valve member further is provided with annular groove means in the periphery of said pilot valve member for communicating with said recess and said relief channel.
Claim 7
Dependent Claim
41 words
The structure as in claim 1 wherein said first means includes an inlet pipe passing through an opening in the wall of said tank, and means mounting said inlet pipe to the wall of the tank providing a sound deadening characteristic.
Claim 8
Dependent Claim
37 words
A structure as in claim 6 wherein said last means includes a bushing formed of flexible material and securement means whereby the inlet pipe is mounted by way of a part of the said flexible bushing means.
Claim 9
Dependent Claim
43 words
A construction as in claim 7 including securing means constructed to clamp a part of the said flexible bushing against the wall of the tank, and a further support bushing secured to the flexible bushing and having a part carrying the inlet tube.
Claim 10
Dependent Claim
21 words
A valve as in claim 1 wherein the sealing means includes O-rings positioned in annular grooves formed in the valve member.
Claim 11
Dependent Claim
52 words
A valve as in claim 3, wherein said sealing element is made of sealing material, the port in it being positioned radially, whereby angular movement of the valve member moves the port in the sealing element into and out of engagement with the said port having communication with the said pressure chamber.