Water closet safety control

Claim 2

In a water closet having a refill control valve and a refill float controlling normal water refill flow cut-on and cut-off valve positions; A. a valve linkage control arm movable in conjunction with said refill float between normal upper and lower positions and moving said valve respectively to cut-off and cut-on positions; and B. a water level sensor float engageable with said arm and having an upper restricted position with the valve during normal tank operating conditions being in open tank refill position controlled by said arm and refill float, and with a lower than normal water tank level permitting movement of said arm to a further lower position for a valve cut-off condition.

Claim 3

In a water closet having a refill control valve and a refill float controlling normal water refill float cut-on and cut-off valve positions: A. a valve body; B. a pivotal valve linkage control arm mounted on said body and operatively connected to said refill float and movable between upper and lower positions for moving said valve respectively to cut-off and cut-on positions; C. said valve body having a recess therein to permit downward pivoting of said control arm to a lowermost position for actuating said valve to cut-off position independent of normal positions of said refill float; and D. a water refill sensor float operatively floatingly mounted on said valve body and engageable with said control arm to prevent pivoting thereof to said lowermost position to maintain said valve open during normal refill operating conditions said water level sensor float at a lower than normal water tank level permitting movement of said arm to a further lower position for a valve cut-off condition.

Claim 4

In a water closet having a refill control valve and a refill float controlling normal water refill float cut-on and cut-off valve positions: A. a valve body; B. a pivotal valve linkage control arm mounted on said body and operatively connected to said refill float and movable between upper and lower positions for moving said valve respectively to cut-off and cut-on positions; C. said valve body having a recess therein to permit downward pivoting of said control arm to a lowermost position for actuating said valve to cut-off position independent of normal positions of said refill float; and D. a water refill sensor float operatively floatingly mounted on said valve body and engageable with said control arm to prevent pivoting thereof to said lowermost position to maintain said valve open during normal refill operating conditions said water level sensor float at a lower than normal water tank level permitting movement of said arm to a further lower position for a valve cut-off condition.

Claim 5

In a water closet of the type embodying a convention flush water tank with a water supply conduit having a filling valve, a ball cock float positioned in said tank and connnected to said filling valve, and a discharge drain, a refill water safety control comprising: A. a fill valve body and an upstanding shaft thereon movably mounting said float; B. a water level sensor float mounted loosely around said fill valve body with the uppermost floating position being restricted thereby; C. a pivotally mounted valve control linkage arm operatively interconnected with the filling valve and ball cock float; D. said fill valve body having a recess therein adapted for receiving said linkage arm in a downward pivoted position; E. said sensor float during normal tank operation floatingly engaging the underside of said linkage arm and preventing entry thereof into said recess and with the fill valve in open water flow position, but upon an abnormal lowering of the water level in the tank permitting pivotting downward an added increment in which position the fill valve is moved to water flow cut-off position.

Claim 6

In a water closet of the type embodying a convention flush water tank with a water supply conduit having a filling valve, a ball cock float positioned in said tank and connnected to said filling valve, and a discharge drain, a refill water safety control comprising: A. a fill valve body and an upstanding shaft thereon movably mounting said float; B. a water level sensor float mounted loosely around said fill valve body with the uppermost floating position being restricted thereby; C. a pivotally mounted valve control linkage arm operatively interconnected with the filling valve and ball cock float; D. said fill valve body having a recess therein adapted for receiving said linkage arm in a downward pivoted position; E. said sensor float during normal tank operation floatingly engaging the underside of said linkage arm and preventing entry thereof into said recess and with the fill valve in open water flow position, but upon an abnormal lowering of the water level in the tank permitting pivotting downward an added increment in which position the fill valve is moved to water flow cut-off position.

Claim 7

In apparatus as claimed in claim 2, said valve body having a ring engageable by said sensor float to limit floating thereof to a restricted upper position wherein normal valve refilling condition is undisturbed, and preventing pivotting of said arm to said lowermost position.

Claim 8

In apparatus as claimed in claim 4, said sensor float consisting of a buoyant plastic material.

Claim 9

In apparatus as claimed in claim 5, said sensor float having a bore therethrough loosely engageable over said valve body to permit free floating to positions as determined by water level in said closet.