Chemical dispenser for toilet

Claim 2

A dispenser for delivering a predetermined amount of liquid to the toilet bowl of a toilet tank combination each time the toilet is flushed, said dispenser comprising: a. a liquid reservoir mountable within the flush tank of the toilet; b. a housing attached to said liquid reservoir and having a liquid metering chamber formed therein which is in liquid receiving communication with said liquid reservoir; eservoir; c. delivery means on said housing through which liquid from the metering chamber thereof is delivered to the toilet bowl; d. valve means within said housing for controlling the flow of liquid between said liquid reservoir and the metering chamber of said housing, said valve means when open allows liquid to enter into the metering chamber and will close when the metering chamber is substantially filled; e. a piston reciprocally movable within the metering chamber of said housing for holding said valve means closed between flushing operations of the toilet and for allowing said valve means to open upon commencement of a flushing operation, said piston adapted to pump the liquid from the metering chamber of said housing to said delivery means as a flushing operation nears completion; and f. float means within the flush tank of the toilet and coupled to said piston for reciprocally moving said pisTon in response to the emptying and filling of the flush tank during a flushing operation of the toilet.

Claim 3

A dispenser as claimed in claim 1 wherein said valve means comprises: a. a valve seat having an orifice formed therethrough; and b. a floating ball valve within the metering chamber of said housing.

Claim 4

A dispenser as claimed in claim 1 wherein said valve means comprises: a. a valve seat having an orifice formed therein; b. an open cage depending from said valve seat into the metering chamber of said housing, said open cage disposed in axial alignment with the orifice formed in said valve seat; and c. a floating valve within said open cage and axially movable therein to open and close the orifice formed in said valve seat.

Claim 5

A dispenser as claimed in claim 1 wherein said delivery means comprises: a. a liquid outlet boss formed on said housing and having a passage therethrough which communicates with the liquid metering chamber of said housing; b. a delivery tube attached on one end thereof to said outlet boss; and c. means on the other end of said delivery tube for attachment thereof to the overflow pipe of the toilet.

Claim 6

A dispenser as claimed in claim 1 wherein said float means comprises an inverted cup shaped structure and an upright cup shaped structure in vertically disposed axial alignment with each other.

Claim 7

A dispenser as claimed in claim 1 further comprising a check valve means within said delivery means for allowing the liquid to flow therethrough from the metering chamber of said housing and for checking reverse flow of that liquid.

Claim 8

A dispenser for delivering a predetermined amount of liquid to the toilet bowl of a toilet tank combination each time the toilet is flushed, said dispenser comprising: a. a liquid reservoir mountable within the flush tank of the toilet and having a depending liquid outlet thereon; b. a housing having a perpendicular bore therein which is open at the top and closed at the bottom, said housing attached to the outlet of said liquid reservoir to place the bore of said housing in liquid receiving communication with said reservoir; c. a valve seat within the bore of said housing to provide a liquid metering chamber between said valve seat and the bottom of said housing, said valve seat having an orifice through which liquid from said reservoir is admitted to the metering chamber of said housing; d. floating valve means within the metering chamber of said housing for controlling the flow of liquid through said valve seat, said floating valve means adapted to sealingly engage said valve seat when the metering chamber becomes substantially filled with liquid from said reservoir; e. outlet means on said housing through which liquid from the metering chamber is delivered to the toilet bowl of the toilet; f. a piston axially reciprocally movable between up and down positions within the metering chamber of said housing, said piston adapted to holdingly engage said floating valve means in sealing engagement with said valve seat when said piston is in the up position; and g. float means within the flush tank of the toilet and coupled to said piston for moving said piston in response to the emptying and filling of the flush tank, said float means adapted to hold said piston in the up position when the flush tank is full whereby said floating valve means sealingly engages said valve seat, said float means adapted to move said piston downwardly during emptying of the flush tank to disengage said floating valve means from said valve seat, and said float means adapted to move said piston upwardly during refilling of the flush tank to pump the liquid from the metering chamber of said housing into said outlet means.

Claim 9

A dispenser for delivering a predetermined amount of liquid to the toilet bowl of a toilet tank combination each time the toilet is flushed, said dispenser comprising: a. a liquid reservoir mountable within the flush tank of the toilet and having a depending liquid outlet thereon; b. a housing having a perpendicular bore therein which is open at the top and closed at the bottom, said housing attached to the outlet of said liquid reservoir to place the bore of said housing in liquid receiving communication with said reservoir; c. a valve seat within the bore of said housing to provide a liquid metering chamber between said valve seat and the bottom of said housing, said valve seat having an orifice through which liquid from said reservoir is admitted to the metering chamber of said housing; d. floating valve means within the metering chamber of said housing for controlling the flow of liquid through said valve seat, said floating valve means adapted to sealingly engage said valve seat when the metering chamber becomes substantially filled with liquid from said reservoir; e. outlet means on said housing through which liquid from the metering chamber is delivered to the toilet bowl of the toilet; f. a piston axially reciprocally movable between up and down positions within the metering chamber of said housing, said piston adapted to holdingly engage said floating valve means in sealing engagement with said valve seat when said piston is in the up position; and g. float means within the flush tank of the toilet and coupled to said piston for moving said piston in response to the emptying and filling of the flush tank, said float means adapted to hold said piston in the up position when the flush tank is full whereby said floating valve means sealingly engages said valve seat, said float means adapted to move said piston downwardly during emptying of the flush tank to disengage said floating valve means from said valve seat, and said float means adapted to move said piston upwardly during refilling of the flush tank to pump the liquid from the metering chamber of said housing into said outlet means.

Claim 10

A dispenser as claimed in claim 7 wherein said floating valve means comprises a hollow ball.

Claim 11

A dispenser as claimed in claim 7 wherein said float means comprises: a. a piston rod depending from said piston through the botTom of said housing; b. an upright cup shaped structure on the lowermost end of said piston rod; and c. an inverted cup shaped structure integral with said upright cup shaped structure and depending in vertical axial alignment therefrom.