US3932279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-tank ion exchange water treatment system
Assignee: Rock Valley Water Condition Inc
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Filing: 1974-10-11
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Granted: 1976-01-13
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Expires: 1994-10-11
Abstract
Abstract A series of ion exchangers are connected in parallel in a water treatment system and are electrically interlocked against simultaneous regeneration. After an exchanger regenerates, it is held in standby status and is automatically returned to service use when another exchanger begins its regeneration cycle.
Inventors
- 👤 Charles H. Yocum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:01
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/42; B; B01; B01J; B01J47/00; B01J47/02; B01J47/026; B01J47/14; B01J49/00; B01J49/80; B01J49/85
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
339 words
An ion exchange water treatment system comprising a plurality of ion exchangers adapted to be connected in parallel in a water system, an electric control circuit associated with all of said exchangers, said control circuit including a plurality of control branches and further including a plurality of energizing paths, there being one control branch and one energizing path associated individually with each exchanger, all of said control branches being connected in parallel with one another in said circuit and all of said energizing paths being connected in parallel combination with one another in said circuit, energizing means in each of said energizing paths, an electric sensing circuit associated individually with each exchanger and normally energized by the respective energizing means, each of said sensing circuits including a sensing means normally operable to produce an electric signal in said sensing circuit upon detecting that the respective exchanger needs regeneration, responding means in each of said sensing circuits and normally triggered by the signal produced by the respective sensing means when the latter detects the need for regeneration, each of said responding means being operable when triggered to produce an electric signal in the respective control branch, means associated individually with each exchanger and responsive to the signal produced in the respective control branch to cause the respective exchanger to regenerate, a switching device associated individually with each exchanger, all of said switching devices being connected in a series combination which is connected in series with the parallel combination of energizing paths, and means associated individually with each switching device for placing the respective switching device in a first condition when the exchanger begins regeneration and for placing the switching device in a second condition when the exchanger completes regeneration, the switching device of any one exchanger being operable when in said first condition to disable the energizing means for the sensing circuit of every other exchanger thereby to prevent the sensing means in every other sensing circuit from producing its signal so only one exchanger may regenerate at a time.
Claim 2
Dependent Claim
339 words
An ion exchange water treatment system comprising a plurality of ion exchangers adapted to be connected in parallel in a water system, an electric control circuit associated with all of said exchangers, said control circuit including a plurality of control branches and further including a plurality of energizing paths, there being one control branch and one energizing path associated individually with each exchanger, all of said control branches being connected in parallel with one another in said circuit and all of said energizing paths being connected in parallel combination with one another in said circuit, energizing means in each of said energizing paths, an electric sensing circuit associated individually with each exchanger and normally energized by the respective energizing means, each of said sensing circuits including a sensing means normally operable to produce an electric signal in said sensing circuit upon detecting that the respective exchanger needs regeneration, responding means in each of said sensing circuits and normally triggered by the signal produced by the respective sensing means when the latter detects the need for regeneration, each of said responding means being operable when triggered to produce an electric signal in the respective control branch, means associated individually with each exchanger and responsive to the signal produced in the respective control branch to cause the respective exchanger to regenerate, a switching device associated individually with each exchanger, all of said switching devices being connected in a series combination which is connected in series with the parallel combination of energizing paths, and means associated individually with each switching device for placing the respective switching device in a first condition when the exchanger begins regeneration and for placing the switching device in a second condition when the exchanger completes regeneration, the switching device of any one exchanger being operable when in said first condition to disable the energizing means for the sensing circuit of every other exchanger thereby to prevent the sensing means in every other sensing circuit from producing its signal so only one exchanger may regenerate at a time.
Claim 3
Dependent Claim
26 words
An ion exchange water treatment system as defined in claim 1 in which at least three ion exchangers are connected in parallel in said water system.
References Cited (Backward Citations)
US3396845A
Cited
US3366241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |