Patent US4259269A successfully refreshed from Google Patents.
US4259269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical feed system
Assignee: ChampionX LLC
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Filing: 1979-10-19
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Granted: 1981-03-31
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Expires: 1999-10-19
Abstract
Abstract Apparatus for handling, diluting and adding a biocide chemical to a water cooling system which includes a venturi device powered by the motive water in the cooling system and connected to a biocide chemical supply and to a control network, including flow control means and valve means for obtaining controlled feed of the chemical into the system.
Inventors
- 👤 William F. Flowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:07
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/686; B; B01; B01F; B01F33/00; B01F33/80; B01F35/00; B01F35/71; B01F35/717; B01F35/718; B01F35/71805; C02F1/50; C02F2103/00; C02F2103/02; C02F2103/023; Y; Y10; Y10S; Y10S261/00; Y10S261/11; Y10S261/46
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
157 words
In a water cooling system for a heat exchanger, a water cooling tower connected by water lines to the heat exchanger and pumping means for circulating the water between and through the cooling tower and the heat exchanger, the improvement in an apparatus for adding a biocide chemical to the water to control microbiological growth within the cooling tower and the heat exchanger surfaces served by the tower, said apparatus comprising a pipe having an inlet connected to the water circulating line of the system ahead of the cooling tower and an outlet connected to said line downstream from the inlet and ahead of the cooling tower thereby causing water flow through the pipe, venturi means in said pipe utilizing the water flow to produce suction, and means supplying a biocide chemical to the suction means whereby the biocide is under suction at all times in the supply means and is drawn into the pipe water flow.
Claim 2
Dependent Claim
157 words
In a water cooling system for a heat exchanger, a water cooling tower connected by water lines to the heat exchanger and pumping means for circulating the water between and through the cooling tower and the heat exchanger, the improvement in an apparatus for adding a biocide chemical to the water to control microbiological growth within the cooling tower and the heat exchanger surfaces served by the tower, said apparatus comprising a pipe having an inlet connected to the water circulating line of the system ahead of the cooling tower and an outlet connected to said line downstream from the inlet and ahead of the cooling tower thereby causing water flow through the pipe, venturi means in said pipe utilizing the water flow to produce suction, and means supplying a biocide chemical to the suction means whereby the biocide is under suction at all times in the supply means and is drawn into the pipe water flow.
Claim 3
Dependent Claim
22 words
The apparatus defined in claim 1, wherein said supply means includes means for metering the biocide chemical to the suction producing means.
Claim 4
Dependent Claim
30 words
The apparatus defined in claim 1, wherein said supply means includes a container of biocide chemical, and a control piping network connected between the container and the suction producing means.
Claim 5
Dependent Claim
27 words
The apparatus defined in claim 3, wherein the supply means includes a quick disconnect coupling at the container having fittings with valves that automatically close on disconnection.
Claim 6
Dependent Claim
27 words
The apparatus defined in claim 3, wherein said control piping network includes means for selectively slug or meter feeding of the chemical to said suction producing means.
Claim 7
Dependent Claim
34 words
The apparatus defined in claim 5, wherein said control piping network further includes means ahead of the suction producing means for allowing flow of chemical only in the direction toward said suction producing means.
Claim 8
Dependent Claim
15 words
The apparatus defined in claim 5, wherein the means for meter feeding includes a rotometer.
Claim 9
Dependent Claim
28 words
The apparatus defined in claim 3, wherein said control piping network includes means for selectively periodically feeding a metered amount of the chemical to said suction producing means.
Claim 10
Dependent Claim
17 words
The apparatus defined in claim 8, wherein the periodic feeding means includes a timer actuated solenoid valve.
References Cited (Backward Citations)
US3094133A
Cited
US3196892A
Cited
US3094134A
Cited
US3291117A
Cited
US3450265A
Cited
US3430823A
Cited
US3756220A
Cited
US3754741A
Cited
GB1343664A
Cited
US4091056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |