Fill valve
First Claim
1. A fill valve for use in a toilet tank comprising:
- a housing including;
a body having an inlet and an outlet, anda cap having an outer surface, which forms part of the exterior of said fill valve, and an underside, said cap being removably attached to said body, wherein at least a portion of said underside is in fluid communication with said outlet;
main valve means for controlling flow between said inlet and said outlet, said main valve means capable of allowing flow from said inlet to said cap in an open position and capable of sealing against said underside of said cap in a closed position to prevent flow from said inlet to said outlet, whereby said underside of said cap defines a valving surface;
wherein said body and said main valve means define a control chamber therebetween, and wherein said body and said main valve means are adapted to form a restricted passage between said inlet and said control chamber for pressurizing said control chamber and urging said main valve means to the closed position against said underside of said cap;
pilot valve means disposed in said body for controlling flow between said control chamber and said outlet; and
a water level responsive member responsive to water level in the tank for opening said pilot valve means to reduce pressure in said control chamber, thereby permitting inlet pressure to flex said main valve means away from said underside of said cap in the open position;
whereby said fill valve is capable of allowing flow to travel from said inlet, through said main valve means, across said underside of said cap, and out of said outlet; and
whereby said main valve means is exposed when said cap is removed.
3 Assignments
0 Petitions
Accused Products
Abstract
A fill valve has a main valve with a valving surface contacted by a valve disk. A series of offset radial paths separated by a toroidal path permit free radial flow at full open and quiet tortuous flow as the valve closes. Removal of a cap permits access to the main valve for cleaning. Indicia in the valve body provide easy height adjustments. A riser base is made up of easily molded locking parts and provides a variable height adjustment structure that is shielded from view. A flexible cup performs multiple functions including serving as a pilot valve, a vacuum breaker valve and a seal. A float for operating the pilot valve is pivotally mounted without extra parts or fasteners.
44 Citations
35 Claims
-
1. A fill valve for use in a toilet tank comprising:
-
a housing including; a body having an inlet and an outlet, and a cap having an outer surface, which forms part of the exterior of said fill valve, and an underside, said cap being removably attached to said body, wherein at least a portion of said underside is in fluid communication with said outlet; main valve means for controlling flow between said inlet and said outlet, said main valve means capable of allowing flow from said inlet to said cap in an open position and capable of sealing against said underside of said cap in a closed position to prevent flow from said inlet to said outlet, whereby said underside of said cap defines a valving surface; wherein said body and said main valve means define a control chamber therebetween, and wherein said body and said main valve means are adapted to form a restricted passage between said inlet and said control chamber for pressurizing said control chamber and urging said main valve means to the closed position against said underside of said cap; pilot valve means disposed in said body for controlling flow between said control chamber and said outlet; and a water level responsive member responsive to water level in the tank for opening said pilot valve means to reduce pressure in said control chamber, thereby permitting inlet pressure to flex said main valve means away from said underside of said cap in the open position; whereby said fill valve is capable of allowing flow to travel from said inlet, through said main valve means, across said underside of said cap, and out of said outlet; and whereby said main valve means is exposed when said cap is removed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A toilet tank fill valve comprising:
-
a housing including a body having an inlet and an outlet and a cap having an underside; a main valve in said housing for controlling flow between said inlet and said outlet; said main valve including a flexible valve disk having a central portion mounted for flexing movement in the direction of the axis of said valve disk; said underside of said cap defining a valving surface interfacing with a first side of said valve disk, a control chamber at the second side of said valve disk, and a restricted passage between said inlet and said control chamber for pressurizing said control chamber and forcing said valve disk to a closed position against said valving surface; a pilot valve in said housing for controlling flow between said control chamber and said outlet; a member responsive to water level in the tank for opening said pilot valve to reduce pressure in said control chamber and permit inlet pressure to flex said valve disk away from said valving surface to an open position; and a flexible cup member having a base, said base including a segment; wherein said housing further comprises; an inlet tube member having an inlet tube communicating with said central portion of said valve disk and having an enlarged, disk-shaped head portion underlying said second side of said valve disk, said control chamber being defined in said head portion; wherein said pilot valve includes a passage in said head portion which terminates in a valve seat at the underside of said head portion; wherein said base of said flexible cup member underlies said head portion and a peripheral flange portion surrounding the rim of said head portion; and wherein said segment of said base is engageable with said valve seat to control flow through said pilot valve. - View Dependent Claims (26, 27)
-
-
28. A toilet tank fill valve comprising:
-
a housing including a cap and a body having a pivot nest, an inlet and an outlet, said body defining a float chamber in communication with the exterior of said housing; a main valve in said for controlling flow between said inlet and said outlet; said main valve including a valve disk having a central portion mounted for flexing movement in the direction of the axis of said valve disk; a valving surface on said cap interfacing with a first side of said valve disk, a control chamber at the second side of said valve disk, and a restricted passage between said inlet and said control chamber for pressurizing said control chamber and forcing said valve disk to a closed position against said valving surface; a pilot valve in said body for controlling flow between said control chamber and said outlet; a member responsive to water level in the tank for opening said pilot valve to reduce pressure in said control chamber and permit inlet pressure to flex said valve disk away from said valving surface to an open position; and a float member including a float in said chamber and a mounting lever extending to the region of said pilot valve, said mounting lever having a pivot projection; wherein said pivot nest receives said pivot projection and supports said float member for pivotal movement within said housing. - View Dependent Claims (29)
-
-
30. A fill valve for use in a toilet tank comprising:
-
a housing including; a body having an inlet and an outlet, and a cap removably attached to said body; a flexible hollow valve disk disposed in said housing, said valve disk being capable of allowing flow from said inlet to said cap in an open position, and said valve disk capable of being flexed toward said cap for sealing against said underside to prevent flow from said inlet to said outlet in a closed position (whereby said valve disk and said housing define a main valve for controlling flow between said inlet and said outlet; wherein said body and said valve disk define a control chamber therebetween, and wherein said body and said valve disk are adapted to form a restricted passage between said inlet and said control chamber for pressurizing said control chamber and urging said valve disk to the closed position against said cap; pilot valve means disposed in said body for controlling flow between said control chamber and said outlet; and a water level responsive member responsive to water level in the tank for opening said pilot valve means to reduce pressure in said control chamber, thereby permitting inlet pressure to flex said main valve means away from said underside of said cap in the open position; whereby said fill valve is capable of allowing flow to travel from said inlet, through said valve disk, past said cap, and out of said outlet; and whereby said valve disk is exposed when said cap is removed. - View Dependent Claims (31, 32, 33)
-
-
34. A fill valve for use in a toilet tank comprising:
-
a housing including; a body having a pilot orifice, an inlet and an outlet, and a cap removably attached to said body; main valve means for controlling flow between said inlet and said outlet, said main valve means capable of allowing flow from said inlet to said cap in an open position and capable of sealing against said underside of said cap in a closed position to prevent flow from said inlet to said outlet, whereby said underside of said cap defines a valving surface; wherein said body and said main valve means define a control chamber therebetween, wherein said body and said main valve means are adapted to form a restricted passage between said inlet and said control chamber for pressurizing said control chamber and urging said main valve means to the closed position against said underside of said cap, and wherein said pilot orifice connects said control chamber to said outlet; pilot valve means disposed in said body for controlling flow between said control chamber and said outlet, said pilot valve means including a flexible cup member having a flexible base which includes a pilot valve flap portion which is capable of covering said pilot orifice in response to said water lever response member; and a water level responsive member responsive to water level in the tank for allowing said pilot valve flap portion to uncover said pilot orifice, thereby opening said pilot valve means to reduce pressure in said control chamber, thereby permitting inlet pressure to flex said main valve means away from said underside of said cap in the open position; whereby said fill valve is capable of allowing flow to travel from said inlet, through said valve disk, past said cap, and out of said outlet; and whereby said valve disk is exposed when said cap is removed. - View Dependent Claims (35)
-
Specification