US2735301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Schwob
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
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Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:43
CPC Classifications
G; G01; G01F; G01F23/00; G01F23/22; G01F23/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
AN ELECTRIC LEVEL INDICATOR COMPRISES A METAL SHEATH OPEN AT BOTH ENDS AND IMMERSED IN THE LIQUID THE LEVEL OF WHICH IS TO BE ASCERTAINED, AN INSULATED HOLLOW MEMBER WITHIN THE SHEATH CONSTITUTING PART OF A PARTITION SUBDIVIDING THE INSIDE OF SAID SHEATH INTO TWO COMPARTMENTS, A PRIMARY LIMNIMETRIC SCALE INCLUDING A PLURALITY OF METAL CONTACT-PIECES WITHIN SAID SHEATH AND LYING AT SUPERPOSED LEVELS, RESISTANCES CONNECTING SAID CONTACT-PIECES IN SERIES, SAID CONTACT-PIECES AND RESISTANCES BEING INSERTED INSIDE THE FIRST COMPARTMENT OF THE SHEATH, A FIRST MILLIAMMETER AN ELECTRIC CIRCUIT IN WHICH THE MILLIAMMETER IS INSERTED IN SERIES WITH THE SERIES OF RESISTANCES AND A SUPPLY OF LOW A. C. VOLTAGE INSERTED IN SAID CIRCUIT AND A SECONDARY LIMNIMETRIC SCALE INCLUDING A PLURALITY OF SIMILAR INDEPENDENT METAL PARTS WITHIN SAID SHEATH AND EXTENDING EACH OVER AN OPERATIVE HEIGHT EQUAL TO THE SPACING BETWEEN TWO CORRESPONDING SUCCESSIVE CONTACT-PIECES OF THE FIRST SCALE, EACH OF SAID LYING IN HORIZONTAL REGISTER WITH THE INTERVAL SEPARATING THE TWO CORRESPONDING SUCCESSIVE CONTACT-PIECES OF THE FIRST SCALE, SAID METAL PARTS
Claim 2
Dependent Claim
173 words
AN ELECTRIC LEVEL INDICATOR COMPRISES A METAL SHEATH OPEN AT BOTH ENDS AND IMMERSED IN THE LIQUID THE LEVEL OF WHICH IS TO BE ASCERTAINED, AN INSULATED HOLLOW MEMBER WITHIN THE SHEATH CONSTITUTING PART OF A PARTITION SUBDIVIDING THE INSIDE OF SAID SHEATH INTO TWO COMPARTMENTS, A PRIMARY LIMNIMETRIC SCALE INCLUDING A PLURALITY OF METAL CONTACT-PIECES WITHIN SAID SHEATH AND LYING AT SUPERPOSED LEVELS, RESISTANCES CONNECTING SAID CONTACT-PIECES IN SERIES, SAID CONTACT-PIECES AND RESISTANCES BEING INSERTED INSIDE THE FIRST COMPARTMENT OF THE SHEATH, A FIRST MILLIAMMETER AN ELECTRIC CIRCUIT IN WHICH THE MILLIAMMETER IS INSERTED IN SERIES WITH THE SERIES OF RESISTANCES AND A SUPPLY OF LOW A. C. VOLTAGE INSERTED IN SAID CIRCUIT AND A SECONDARY LIMNIMETRIC SCALE INCLUDING A PLURALITY OF SIMILAR INDEPENDENT METAL PARTS WITHIN SAID SHEATH AND EXTENDING EACH OVER AN OPERATIVE HEIGHT EQUAL TO THE SPACING BETWEEN TWO CORRESPONDING SUCCESSIVE CONTACT-PIECES OF THE FIRST SCALE, EACH OF SAID LYING IN HORIZONTAL REGISTER WITH THE INTERVAL SEPARATING THE TWO CORRESPONDING SUCCESSIVE CONTACT-PIECES OF THE FIRST SCALE, SAID METAL PARTS
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) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |