Adjustable height ballcock assembly

Claim 2

A ballcock valve assembly for controlling the supply of water to a toilet flushing tank, comprising: a. a standpipe structure; b. means for connecting the lowermost end of said structure with the tank, and providing a water supply inlet to the standpipe; c. valve control means at the uppermost end of said structure for controlling delivery of water into the tank; and d. length adjustable flow connections between the lowermost and uppermost ends of said structure, including tubular axially slidable telescoped members extendably And retractably adjustable to variably position the valve control means at predetermined selectable heights within the tank.

Claim 3

A ballcock valve assembly according to claim 1, including means for releaseably locking said telescoped members in a selected position of adjustment.

Claim 4

A ballcock valve assembly according to claim 1, wherein the lowermost end also includes a discharge opening for delivery of water into the tank.

Claim 5

A ballcock valve assembly according to claim 3, wherein the flow connections comprise separate flow paths in laterally spaced relation for water supplied to the valve control means and water delivered from the valve control means to said discharge opening.

Claim 6

A ballcock valve assembly according to claim 1, wherein one of said telescoped members is provided with a plurality of axially spaced circumferentially extending sealing ring receiving grooves corresponding with selectible height adjustments, and the other of said members mounts a lock and sealing nut for securing the members in sealed adjusted relation.

Claim 7

A ballcock valve assembly according to claim 4, wherein the lowermost end of the structure comprises a unitary body having parallel bores with open top ends, one of said bores being in communication with said water supply inlet and the other being in communication with the water discharge opening, and the uppermost end of the structure comprises spaced parallel tubular members adapted for endwise insertion into said open top ends for telescopic axial adjustment within said bores.

Claim 8

A ballcock valve for controlling supply of water to a toilet flushing tank, comprising: a. a valve housing defining a valve chamber; b. a water inlet in communication with said valve chamber through a restricted opening in a lower side thereof circumscribed by a first valve seat; c. a water outlet in communication with said chamber through an outlet opening in said lower side in lateral spaced relation to said inlet opening, said outlet opening being circumscribed by an annular seat surface; d. a valve member in valving relation with said first valve seat and having a stem guidingly supported in an upper side of said chamber; e. a flexible diaphragm extending across said chamber above said annular seat surface, and being supported peripherally in said housing, said diaphragm having one opening for the passage of said valve member, and another opening coaxial with said annular seat surface but of smaller diameter than the seat diameter, whereby an overhanging lip of the diaphragm is deflectable over said seat surface during water outflow to provide a streamlined noise reducing flow passage; and f. means including a float connected with said valve stem for controlling the operation of said valve element in response to changes in water level within the flushing tank.

Claim 9

A ballcock valve for controlling supply of water to a toilet flushing tank, comprising: a. a valve housing defining a valve chamber; b. a water inlet in communication with said valve chamber through a restricted opening in a lower side thereof circumscribed by a first valve seat; c. a water outlet in communication with said chamber through an outlet opening in said lower side in lateral spaced relation to said inlet opening, said outlet opening being circumscribed by an annular seat surface; d. a valve member in valving relation with said first valve seat and having a stem guidingly supported in an upper side of said chamber; e. a flexible diaphragm extending across said chamber above said annular seat surface, and being supported peripherally in said housing, said diaphragm having one opening for the passage of said valve member, and another opening coaxial with said annular seat surface but of smaller diameter than the seat diameter, whereby an overhanging lip of the diaphragm is deflectable over said seat surface during water outflow to provide a streamlined noise reducing flow passage; and f. means including a float connected with said valve stem for controlling the operation of said valve element in response to changes in water level within the flushing tank.

Claim 10

A ballcock valve according to claim 7, wherein said outlet opening is at one end of a converging passage connecting at its other end with a smaller restricting opening.

Claim 11

A ballcock valve according to claim 8, including at least one anti-siphon vent opening in the lower side of said chamber circumscribed by a seat having valving relation with said diaphragm.

Claim 12

A ballcock valve for controlling supply of water to a toilet flushing tank, comprising: a. a valve housing defining a valve chamber; b. a water inlet in communication with said valve chamber thorugh an opening in a lower side thereof circumscribed by a valve seat; c. a cylindrical wall around and outwardly spaced from said seat extending inwardly from the lower side of the valve chamber; d. a water outlet from said chamber through an opening in a wall of said chamber; e. a valve element having a stem guidingly supported in an upper side of said chamber, and a lower end in valving relation with said valve seat, whereby said valve element tends to open in response to water pressure at said inlet; f. a float for operating said valve stem and arranged to exert a downward force to close said valve element; g. a circumferentially extending radial projection of rigid material carried by the lower end of said stem and forming with said wall a cavity having an annular outlet orifice between the projection and the cylindrical wall; h. and means for sequentially reducing the flow area of said orifice at predetermined closing movement positions of the valve element, whereby at a first position the force tending to open the valve element will be increased to a value such that the float will be increasingly submerged, and at a second position the force tending to open the valve element will be of a value such that, when exceeded by the increasing float valve closing force, will permit movement of the valve element to fully seated position by the float with a snap action.

Claim 13

A ballcock valve for controlling supply of water to a toilet flushing tank, comprising: a. a valve housing defining a valve chamber; b. a water inlet in communication with said valve chamber thorugh an opening in a lower side thereof circumscribed by a valve seat; c. a cylindrical wall around and outwardly spaced from said seat extending inwardly from the lower side of the valve chamber; d. a water outlet from said chamber through an opening in a wall of said chamber; e. a valve element having a stem guidingly supported in an upper side of said chamber, and a lower end in valving relation with said valve seat, whereby said valve element tends to open in response to water pressure at said inlet; f. a float for operating said valve stem and arranged to exert a downward force to close said valve element; g. a circumferentially extending radial projection of rigid material carried by the lower end of said stem and forming with said wall a cavity having an annular outlet orifice between the projection and the cylindrical wall; h. and means for sequentially reducing the flow area of said orifice at predetermined closing movement positions of the valve element, whereby at a first position the force tending to open the valve element will be increased to a value such that the float will be increasingly submerged, and at a second position the force tending to open the valve element will be of a value such that, when exceeded by the increasing float valve closing force, will permit movement of the valve element to fully seated position by the float with a snap action.

Claim 14

A ballcock valve according to claim 10, wherein said means comprises at said first position a co-action between a wall surface of said valve element and an inner surface of said cylindrical wall, and at said second position a coaction between a wall surface of said valve element and an outer surface of said cylindrical wall.

Claim 15

A ballcock valve according to claim 10, wherein the effective pressure area of the valve element is smaller at said first position than the effective pressure area at said second position.

Claim 16

A ballcock valve according to claim 11, wherein the inner surface of the cylindrical wall is of less diameter than said outer surface thereof.

Claim 17

A ballcock valve according to claim 13, wherein said inner surface of the cylindrical wall has a greater height than that of said outer surface thereof.

Claim 18

A ballcock valve according to claim 14, wherein said outer surface of the cylindrical wall connects at its upper end with a surface of lesser diameter through an upwardly and inwardly inclined circumferential shoulder.

Claim 19

A ballcock valve according to claim 11, in which the wall surfaces of said valve element comprise respectively the inner and outer walls of a downwardly opening circumferentially extending groove at the lower end of the valve element, said groove being adapted to receive therein the uppermost end of said cylindrical wall.