Patent US3145727A successfully refreshed from Google Patents.
US3145727A
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Automatic liquid level control device
Assignee: Ajinomoto Co Inc
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Filing: 1963-08-14
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Granted: 1964-08-25
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Expires: 1983-08-14
Abstract
No abstract record available.
Inventors
- 👤 Yamashita Sunao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:42
CPC Classifications
E; E03; E03B; E03B5/00; E03B5/02; E03B5/025; G; G01; G01F; G01F23/00; G01F23/30; G01F23/76; G05; G05D; G05D9/00; G05D9/02; Y; Y10; Y10T; Y10T137/00; Y10T137/7287; Y10T137/7358; Y10T137/7368; Y10T137/7371; Y10T137/7381; Y10T137/7387; Y10T137/7391
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
AN ARRANGEMENT FOR CONTROLLING THE LEVEL OF A LIQUID COMPRISING, IN COMBINATION: (A) A CONTAINER FOR HOLDING THE LIQUID TO BE CONTROLLED; (B) A FLOAT MEMBER; (C) PIVOT MEANS INTERPOSED BETWEEN SAID FLOAT MEMBER AND SAID CONTAINER, SAID PIVOT MEANS FASTENING SAID FLOAT MEMBER IN SAID CONTAINER FOR PIVOTAL MOVEMENT IN A VERTICALLY EXTENDING PLANE; (D) OUTLET MEANS MOUNTED ON SAID FLOAT MEMBER; (E) AN OUTLET BLOCKING MEMBER MOVABLE ON SAID FLOAT MEMBER RESPONSIVE TO SAID PIVOTAL MOVEMENT OF SAID FLOAT MEMBER TOWARD AND AWAY FROM A BLOCKING POSITION IN WHICH SAID BLOCKING MEMBER OBSTRUCTS SAID OUTLET MEANS; (F) A LIQUID SUPPLY CONDUIT COMMUNICATING WITH SAID TANK; (G) CONTROL VALVE MEANS IN SAID CONDUIT; (H) FLUID PRESSURE OPERATED VALVE ACTUATING MEANS OPERATIVELY CONNECTED TO SAID CONTROL VALVE MEANS; (I) A PRESSURE FLUID CONDUIT CONNECTING SAID ACTUATING MEANS AND SAID OUTLET MEANS; AND (J) SUPPLY MEANS COMMUNICATING WITH SAID PRESSURE FLUID CONDUIT FOR SUPPLYING PRESSURE FLUID TO SAID CONDUIT AT A PREDETERMINED RATE.
Claim 2
Dependent Claim
162 words
AN ARRANGEMENT FOR CONTROLLING THE LEVEL OF A LIQUID COMPRISING, IN COMBINATION: (A) A CONTAINER FOR HOLDING THE LIQUID TO BE CONTROLLED; (B) A FLOAT MEMBER; (C) PIVOT MEANS INTERPOSED BETWEEN SAID FLOAT MEMBER AND SAID CONTAINER, SAID PIVOT MEANS FASTENING SAID FLOAT MEMBER IN SAID CONTAINER FOR PIVOTAL MOVEMENT IN A VERTICALLY EXTENDING PLANE; (D) OUTLET MEANS MOUNTED ON SAID FLOAT MEMBER; (E) AN OUTLET BLOCKING MEMBER MOVABLE ON SAID FLOAT MEMBER RESPONSIVE TO SAID PIVOTAL MOVEMENT OF SAID FLOAT MEMBER TOWARD AND AWAY FROM A BLOCKING POSITION IN WHICH SAID BLOCKING MEMBER OBSTRUCTS SAID OUTLET MEANS; (F) A LIQUID SUPPLY CONDUIT COMMUNICATING WITH SAID TANK; (G) CONTROL VALVE MEANS IN SAID CONDUIT; (H) FLUID PRESSURE OPERATED VALVE ACTUATING MEANS OPERATIVELY CONNECTED TO SAID CONTROL VALVE MEANS; (I) A PRESSURE FLUID CONDUIT CONNECTING SAID ACTUATING MEANS AND SAID OUTLET MEANS; AND (J) SUPPLY MEANS COMMUNICATING WITH SAID PRESSURE FLUID CONDUIT FOR SUPPLYING PRESSURE FLUID TO SAID CONDUIT AT A PREDETERMINED RATE.
References Cited (Backward Citations)
US1354311A
Cited
US2171394A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |