US3104355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion measuring probe with a temperature compensating element in a wheatstone bridge and method of using same
Assignee: Magna Products Inc
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Filing: 1955-04-18
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Granted: 1963-09-17
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Expires: 1975-04-18
Abstract
No abstract record available.
Inventors
- 👤 Elmond A Holmes
- 👤 Gilson H Robrback
- 👤 Jr Willard R Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:58
CPC Classifications
C; C23; C23F; C23F13/00; C23F13/02; C23F13/04; G; G01; G01N; G01N17/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
APPARATUS FOR MEASURING CORROSION OF AN ELECTRICALLY CONDUCTIVE MATERIAL IN A CORROSIVE MEDIUM COMPRISING, IN COMBINATION, PROBE MEANS INCLUDING A FIRST ELECTRICAL RESISTTANCE ELEMENT FORMED OF SUCH MATERIAL, A SECOND ELECTRICAL RESISTANCE ELEMENT HAVING A TEMEPRATURE-RESISTANCE CHARACTERISTIC SIMILAR TO THAT OF SAID FIRST ELEMENT, SUPPORT MEANS CONNECTED TO SAID ELEMENTS FOR SUPPORTING THE SAME IN AND EXPOSED TO THE CORROSIVE MEDIUM, BOTH OF SAID ELEMENTS BEING SUBJECT TO TEMPERATURE VARIATIONS IN SAID MEDIUM, ELECTRIC TERMINALS ON SAID RESISTANCE ELEMENTS, AND ELECTRIC CIRCUIT MEANS CONNECTED TO SAID ELEMENTS, INCLUDING A VOLTAGE SOURCE CONNECTED FOR PASSING ELECTRIC CURRENT THROUGH SAID ELEMENTS SIMULTANEOUSLY, SAID CIRCUIT MEANS INCLUDING MEANS MEASURING CHARGES IN THE RATIO OF ELECTRICAL RESISTANCES OF SAID ELEMENTS IN SITU, THEREBY TO MEASURE CHANGES IN ELECTRICAL RESISTANCE OF SAID FIRST ELEMENT COMPENSATED FOR TEMPERATURE VARIATIONS OF SAID MEDIUM, FOR INDICATING THE AMOUNT OF CORROSION OFF SAID FIRST ELEMENT, SAID VOLTAGE SOURCE BEING OPERABLE TO
Claim 2
Dependent Claim
152 words
APPARATUS FOR MEASURING CORROSION OF AN ELECTRICALLY CONDUCTIVE MATERIAL IN A CORROSIVE MEDIUM COMPRISING, IN COMBINATION, PROBE MEANS INCLUDING A FIRST ELECTRICAL RESISTTANCE ELEMENT FORMED OF SUCH MATERIAL, A SECOND ELECTRICAL RESISTANCE ELEMENT HAVING A TEMEPRATURE-RESISTANCE CHARACTERISTIC SIMILAR TO THAT OF SAID FIRST ELEMENT, SUPPORT MEANS CONNECTED TO SAID ELEMENTS FOR SUPPORTING THE SAME IN AND EXPOSED TO THE CORROSIVE MEDIUM, BOTH OF SAID ELEMENTS BEING SUBJECT TO TEMPERATURE VARIATIONS IN SAID MEDIUM, ELECTRIC TERMINALS ON SAID RESISTANCE ELEMENTS, AND ELECTRIC CIRCUIT MEANS CONNECTED TO SAID ELEMENTS, INCLUDING A VOLTAGE SOURCE CONNECTED FOR PASSING ELECTRIC CURRENT THROUGH SAID ELEMENTS SIMULTANEOUSLY, SAID CIRCUIT MEANS INCLUDING MEANS MEASURING CHARGES IN THE RATIO OF ELECTRICAL RESISTANCES OF SAID ELEMENTS IN SITU, THEREBY TO MEASURE CHANGES IN ELECTRICAL RESISTANCE OF SAID FIRST ELEMENT COMPENSATED FOR TEMPERATURE VARIATIONS OF SAID MEDIUM, FOR INDICATING THE AMOUNT OF CORROSION OFF SAID FIRST ELEMENT, SAID VOLTAGE SOURCE BEING OPERABLE TO
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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |