Patent US4540470A successfully refreshed from Google Patents.
US4540470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distilled water production device
Assignee: Yamato Scientific Co Ltd
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Filing: 1984-05-18
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Granted: 1985-09-10
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Expires: 2004-05-18
Abstract
Abstract A distilled water production device in which cooling water from a condenser is supplied to the boiler at a constant rate. The device is provided with an overflow tube on the outflow conduit for cooling water from the condenser which diverts excess cooling water away from the boiler to a discharge pipe.
Inventors
- 👤 Mitsuharu Wakasugi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:02
CPC Classifications
B; B01; B01D; B01D3/00; B01D1/00; B01D1/0082
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
177 words
A distilled water production device comprising: a boiler for producing steam, a condenser for condensing the steam supplied from said boiler by means of cooling water, means for supplying the cooling water to said condenser, an outflow path for the cooling water connected to said condenser, an overflow tube provided along said outflow path and divided into an upper chamber and a lower chamber by a flow dividing plate, said upper chamber receiving cooling water from said outflow path, means for discharging excess cooling water from inside of said upper chamber comprising a pipe passing through said dividing plate from said upper chamber to said lower chamber and communicating between said upper chamber and said lower chamber so as to keep the height of the cooling water retained in said upper chamber constant, said flow dividing plate being formed with at least one hole through which the cooling water falls from said upper chamber into said lower chamber at a predetermined rate of flow, and means for supplying cooling water to said boiler from said lower chamber.
Claim 2
Dependent Claim
177 words
A distilled water production device comprising: a boiler for producing steam, a condenser for condensing the steam supplied from said boiler by means of cooling water, means for supplying the cooling water to said condenser, an outflow path for the cooling water connected to said condenser, an overflow tube provided along said outflow path and divided into an upper chamber and a lower chamber by a flow dividing plate, said upper chamber receiving cooling water from said outflow path, means for discharging excess cooling water from inside of said upper chamber comprising a pipe passing through said dividing plate from said upper chamber to said lower chamber and communicating between said upper chamber and said lower chamber so as to keep the height of the cooling water retained in said upper chamber constant, said flow dividing plate being formed with at least one hole through which the cooling water falls from said upper chamber into said lower chamber at a predetermined rate of flow, and means for supplying cooling water to said boiler from said lower chamber.
Claim 3
Dependent Claim
34 words
A distilled water production device according to claim 1, wherein, said pipe is threadably engaged with a thread formed on said dividing plate so that the vertical position of said pipe can be adjusted.
Claim 4
Dependent Claim
25 words
A distilled water production device according to claim 2, further comprising means for controlling the flow rate of the cooling water supplied to said condenser.
Claim 5
Dependent Claim
19 words
A distilled water production device according to claim 1, further comprising means for collecting condensed steam from said condenser.
Claim 6
Dependent Claim
55 words
A distilled water production device according to claim 1, wherein said outflow path comprises a connecting pipe with a receiving opening larger than the diameter of the pipe which passes through said flow dividing plate, said receiving opening being positioned underneath the pipe which passes through the flow dividing plate to receive water discharged therefrom.
Claim 7
Dependent Claim
71 words
A distilled water production device according to claim 5, wherein the pipe which passes through the flow dividing plate is provided on its lower portion with an interference plate disposed between the hole through which cooling water falls from the upper chamber to the lower chamber of said overflow tube and the receiving opening of said connecting pipe for preventing water which passes through said hole from entering said connecting pipe.
Claim 8
Dependent Claim
47 words
A distilled water production device according to claim 5, wherein the diameter of the pipe which passes through the flow dividing plate is larger than the diameter of the hole through which cooling water falls from the upper chamber into the lower chamber of said overflow tube.
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) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |