Patent US3297972A successfully refreshed from Google Patents.
US3297972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hyde liquid rheostat
Assignee: —
•
Filing: 1966-01-17
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Granted: 1967-01-10
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Expires: 1986-01-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:07
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A LIQUID RHEOSTAT: (A) A HOUSING, INCLUDING AN ELECTRODE CHAMBER FOR HOLDING AN ELECTROLYTE, (B) AT LEAST TWO ELECTRODES MOUNTED VERTICALLY IN SAID CHAMBER, (C) MEANS FOR CONNECTING THE ELECTRODES TO A SOURCE OF ELECTRICAL POWER TO CAUSE CURRENT FLOW THEREBETWEEN THROUGH THE ELECTROLYTE IN THE CHAMBER, EACH OF SAID ELECTRODES WITHIN SAID CHAMBER HAVING UPPER AND LOWER END PORTIONS AND AN OUTER SURFACE FACING AND DIRECTLY OPPOSED TO A CORRESPONDING OUTER SURFACE OF EACH OF THE OTHER ELECTRODES WITHIN SAID CHAMBER, (D) THE DISTANCE BETWEEN SAID FACING SURFACES OF ALL SAID ELECTRODES INCREASING PROGRESSIVELY AND AT AN INCREASING RATE FROM SAID UPPER END PORTIONS TO SAID LOWER END PORTIONS, (E) THE DISTANCE BETWEEN SAID FACING SURFACES, AS VIEWED IN ANY HORIZONTAL CROSS SECTION THROUGH SAID CHAMBER, BEING CONSTANT FROM ONE EDGE TO THE OTHER EDGE THEREOF.
Claim 2
Dependent Claim
138 words
IN A LIQUID RHEOSTAT: (A) A HOUSING, INCLUDING AN ELECTRODE CHAMBER FOR HOLDING AN ELECTROLYTE, (B) AT LEAST TWO ELECTRODES MOUNTED VERTICALLY IN SAID CHAMBER, (C) MEANS FOR CONNECTING THE ELECTRODES TO A SOURCE OF ELECTRICAL POWER TO CAUSE CURRENT FLOW THEREBETWEEN THROUGH THE ELECTROLYTE IN THE CHAMBER, EACH OF SAID ELECTRODES WITHIN SAID CHAMBER HAVING UPPER AND LOWER END PORTIONS AND AN OUTER SURFACE FACING AND DIRECTLY OPPOSED TO A CORRESPONDING OUTER SURFACE OF EACH OF THE OTHER ELECTRODES WITHIN SAID CHAMBER, (D) THE DISTANCE BETWEEN SAID FACING SURFACES OF ALL SAID ELECTRODES INCREASING PROGRESSIVELY AND AT AN INCREASING RATE FROM SAID UPPER END PORTIONS TO SAID LOWER END PORTIONS, (E) THE DISTANCE BETWEEN SAID FACING SURFACES, AS VIEWED IN ANY HORIZONTAL CROSS SECTION THROUGH SAID CHAMBER, BEING CONSTANT FROM ONE EDGE TO THE OTHER EDGE THEREOF.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |