US3799344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pure water supply device
Assignee: Individual
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Filing: 1972-05-26
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Granted: 1974-03-26
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Expires: 1992-05-26
Abstract
Abstract A compact pure water supply device automatically retains a constant predetermined level in the storage tank and renders a visual indication of the requirement for ion regeneration by means of a transistorized control circuit.
Inventors
- 👤 H Nishizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:07
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/12; B; B01; B01J; B01J4/00; B01J4/008; B01J49/00; B01J49/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
224 words
A compact pure water supply device comprising in combination: a source of untreated water; an electromagnetic valve member connected by a first piping means to said water source and adapted to operate to define open and closed positions; an ion exchanger tank means connected by a second piping means to said valve member; a detector means connected by a third piping means to said ion exchanger tank means and adapted to measure the conductivity of the water in said third piping means; a valve means connected by a fourth piping means to said detector means and having two outlets, one of said two outlets connected by a fifth piping means to an outlet drain means; a pure water tank having a float valve operatively mounted therein, the other of said two outlets connected by a sixth piping means to said pure water tank; a first electrical means operatively connecting said electromagnetic valve member to said float valve via a float switch, said electromagnetic valve member adapted to be selectively operative to either the open or closed position according to a predetermined level of water in said pure water tank; and a second electrical means operatively connecting said detector means to said valve means via an amplifier means for selectively connecting said valve means to said outlet drain means or to said pure water tank.
Claim 2
Dependent Claim
224 words
A compact pure water supply device comprising in combination: a source of untreated water; an electromagnetic valve member connected by a first piping means to said water source and adapted to operate to define open and closed positions; an ion exchanger tank means connected by a second piping means to said valve member; a detector means connected by a third piping means to said ion exchanger tank means and adapted to measure the conductivity of the water in said third piping means; a valve means connected by a fourth piping means to said detector means and having two outlets, one of said two outlets connected by a fifth piping means to an outlet drain means; a pure water tank having a float valve operatively mounted therein, the other of said two outlets connected by a sixth piping means to said pure water tank; a first electrical means operatively connecting said electromagnetic valve member to said float valve via a float switch, said electromagnetic valve member adapted to be selectively operative to either the open or closed position according to a predetermined level of water in said pure water tank; and a second electrical means operatively connecting said detector means to said valve means via an amplifier means for selectively connecting said valve means to said outlet drain means or to said pure water tank.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |