US3616407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for determining the presence of an active element in a body of molten metal
Assignee: Fried Krupp AG Hoesch Krupp
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Filing: 1966-10-14
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Granted: 1971-10-26
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Expires: 1986-10-14
Abstract
Abstract An apparatus for monitoring the oxygen content of liquid metals. A tubular shield surrounds a standard reference electrode and has an open end in which there is sealingly arranged a solid electrolyte member which is electrically connected with the reference electrode and which projects in part from the open end. Measuring means is connected with the reference electrode as well as with the mass of molten metal whose oxygen content is to be monitored. Immersion of the projecting portion of the solid electrolyte member is the mass of molten metal results in establishing of a voltage differential between the reference electrode and the mass of molten metal which voltage differential serves as an indication of the proportion of oxygen in the molten metal.
Inventors
- 👤 Hans-Jurgen Engell
- 👤 Eberhard Schulte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:53
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/406; G01N27/411; G01N27/4112
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
13 words
An arrangement as defined in claim 1, wherein said electrode wire is platinum.
Claim 2
Dependent Claim
20 words
An arrangement as defined in claim 2, wherein said solid electrolyte member possesses high resistance to thermal and mechanical stresses.
Claim 3
Dependent Claim
18 words
An arrangement as defined in claim 3, wherein said solid electrolyte member consists of ZrO2 stabilized with CaO.
Claim 4
Dependent Claim
32 words
An arrangement as defined in claim 1; and further comprising biasing means arranged in said tubular shield and permanently biasing said solid electrolyte member in the direction toward said open front end.
Claim 5
Dependent Claim
22 words
An arrangement as defined in claim 1; and further comprising frictional means conductively connecting said electrode wire and said solid electrolyte member.
Claim 6
Dependent Claim
59 words
An arrangement as defined in claim 6, wherein said electrode wire has an end portion, and wherein said frictional means comprises threads provided on said end portion and a bore provided on said inner portion of said electrolyte located within said tube, said end portion of said wire being received in said bore and said threads establishing frictional engagement.
Claim 7
Dependent Claim
20 words
An arrangement as defined in claim 1, wherein said shield, reference electrode and solid electrolyte member constitute a unitary assembly.
Claim 8
Dependent Claim
47 words
An arrangement as defined in claim 1, wherein said tubular shield is of substantially U-shaped configuration and provided at the bight of the U with an opening facing said mass of molten metal, said solid electrolyte member being in part received in said opening sealing the same.
Claim 9
Dependent Claim
24 words
An arrangement as defined in claim 1, wherein said inner portion of said solid electrolyte member is embedded in the material of said shield.
Claim 10
Dependent Claim
39 words
An arrangement as defined in claim 1, wherein said inner portion of said solid electrolyte member is provided with at least one bore extending in direction toward but terminating short of said outer portions of said solid electrolyte member.
Claim 11
Dependent Claim
15 words
An arrangement as defined in claim 11, wherein said bore is coaxial with said shield.
Claim 12
Dependent Claim
46 words
An arrangement as defined in claim 1; and further comprising a crucible for containing the molten metal and conductor means electrically connecting said measuring means respectively with said standard reference electrode means and with said crucible, said conductor means comprising magnet means connected to said crucible.
Claim 13
Dependent Claim
51 words
An arrangement as defined in claim 1; and further comprising a cover of a material meltable at the temperature of the mass of molten metal and surrounding at least said outer portion of said solid electrolyte member for protecting the same from contamination until immersion in the mass of molten metal.
Claim 14
Dependent Claim
47 words
An arrangement as defined in claim 1, wherein said inner portion of said solid electrolyte member defines with an inner surface of said tubular shield adjacent said open front end an annular clearance; and a fireproof material surrounding said inner portion and completely filling said annular clearance.
Claim 15
Dependent Claim
47 words
An arrangement as defined in claim 1, wherein said tubular shield is proviDed inwardly adjacent said open front end with an inner circumferential recess; and wherein said inner portion of said solid electrolyte member is of a configuration substantially complementary to said recess and sealingly received therein.
Claim 16
Dependent Claim
23 words
An arrangement as defined in claim 16, wherein at least said outer portion of said solid electrolyte member is of substantially spherical configuration.
Claim 17
Dependent Claim
16 words
An arrangement as defined in claim 16, wherein said electrolyte member is of substantially spherical configuration.
Claim 18
Dependent Claim
15 words
An arrangement as defined in claim 16, wherein said electrolyte member is of ovoid configuration.
Claim 19
Dependent Claim
33 words
An arrangement as defined in claim 1, wherein said guide means compromise a tube extending with clearance through said open rear end of said tubular shield toward but short of said plug member.
Claim 20
Dependent Claim
57 words
An arrangement as defined in claim 9, wherein said inner portion of said solid electrolyte which is located within said tubular shield has a face abutting against an inner surface portion of said tubular shield located opposite said opening, and said outer portion which is located outside of said shield constitutes a projection of said inner portion.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |