Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
206 words
Apparatus for feeding, without use of a pump, substantially uniform amounts of a chemical into a liquid stream having an irregular flow pattern, comprising: a holding tank having an inlet port for receiving said liquid stream, said tank having an aperture located at a relatively high position in a side wall thereof; siphon means comprising a section of pipe passing through said aperture with an inner leg which extends to a position near the bottom of said tank and an outer leg which extends to a position substantially below the bottom of said tank; chemical feeding means coupled to the outer pipe leg of said siphon means, said feeding means containing a supply of said chemical and being operative to feed said chemical into the liquid discharged from said outer leg at a rate which has dependence upon the liquid discharge rate; whereby liquid will accumulate in said holding tank without discharge until the level in said tank reaches the aperture whereupon discharge will occur at a substantially uniform rate to empty the tank to a level corresponding to about the bottom of the inner leg, the uniform discharge into said chemical feeding means providing a uniform chemical feed rate without the need for a pump.
Claim 2
Dependent Claim
206 words
Apparatus for feeding, without use of a pump, substantially uniform amounts of a chemical into a liquid stream having an irregular flow pattern, comprising: a holding tank having an inlet port for receiving said liquid stream, said tank having an aperture located at a relatively high position in a side wall thereof; siphon means comprising a section of pipe passing through said aperture with an inner leg which extends to a position near the bottom of said tank and an outer leg which extends to a position substantially below the bottom of said tank; chemical feeding means coupled to the outer pipe leg of said siphon means, said feeding means containing a supply of said chemical and being operative to feed said chemical into the liquid discharged from said outer leg at a rate which has dependence upon the liquid discharge rate; whereby liquid will accumulate in said holding tank without discharge until the level in said tank reaches the aperture whereupon discharge will occur at a substantially uniform rate to empty the tank to a level corresponding to about the bottom of the inner leg, the uniform discharge into said chemical feeding means providing a uniform chemical feed rate without the need for a pump.
Claim 3
Dependent Claim
16 words
An apparatus as defined by claim 1 wherein said chemical feeding means is an erosion feeder.
Claim 4
Dependent Claim
32 words
Apparatus as defined by claim 1 wherein said chemical feeding means is coupled to said outer leg by a pipe having a substantially smaller diameter than the diameter of said outer leg.
Claim 5
Dependent Claim
32 words
An apparatus as defined by claim 2 wherein said erosion feeder is coupled to said outer leg by a pipe having a substantially smaller diameter than the diameter of said outer leg.
Claim 6
Dependent Claim
60 words
Apparatus as defined by claim 2 wherein said erosion feeder is coupled to said outer leg by a coupling pipe and also by a relatively small diameter tubing, said erosion feeder being adapted to dissolve said chemical in the liquid which flows through said tubing and to merge the resultant solution with the liquid which flows through said coupling pipe.
Claim 7
Dependent Claim
60 words
Apparatus as defined by claim 4 wherein said erosion feeder is coupled to said outer leg by a coupling pipe and also by a relatively small diameter tubing, said erosion feeder being adapted to dissolve said chemical in the liquid which flows through said tubing and to merge the resultant solution with the liquid which flows through said coupling pipe.
Claim 8
Dependent Claim
122 words
Apparatus for feeding, without use of a pump, substantially uniform amounts of a chemical into a liquid stream having an irregular flow pattern, comprising: a holding tank for receiving said liquid stream; siphon means for discharging liquid from the tank at a substantially constant rate whenever the liquid in said tank reaches a predetermined level; and chemical feed means coupled to the discharge end of said siphon means, said feed means containing a supply of said chemical and being operative to feed said chemical, at a rate which has dependence upon the liquid discharge rate, into the liquid discharged from said siphon; the uniform discharge into said chemical feeding means providing a uniform chemical feed rate without the need for a pump.
Claim 9
Dependent Claim
122 words
Apparatus for feeding, without use of a pump, substantially uniform amounts of a chemical into a liquid stream having an irregular flow pattern, comprising: a holding tank for receiving said liquid stream; siphon means for discharging liquid from the tank at a substantially constant rate whenever the liquid in said tank reaches a predetermined level; and chemical feed means coupled to the discharge end of said siphon means, said feed means containing a supply of said chemical and being operative to feed said chemical, at a rate which has dependence upon the liquid discharge rate, into the liquid discharged from said siphon; the uniform discharge into said chemical feeding means providing a uniform chemical feed rate without the need for a pump.
Claim 10
Dependent Claim
16 words
An apparatus as defined by claim 7 wherein said chemical feeding means is an erosion feeder.
Claim 11
Dependent Claim
59 words
An apparatus as defined by claim 8 wherein said erosion feeder is coupled to said siphon by a coupling pipe and also by a relatively small diameter tubing, said erosion feeder being adapted to dissolve said chemical into the liquid whch flows through said tubing and merge the resultant solution with the liquid which flows through said coupling pipe.