US3763704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for continuously measuring the temperature of molten metal
Assignee: Individual
•
Filing: 1972-04-28
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Granted: 1973-10-09
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Expires: 1992-04-28
Abstract
Abstract A longitudinally movable thermocouple cable contains a pair of laterally spaced thermocouple wires having exposed ends at the leading end of the cable. The cable is fed forward into a body of molten metal by variable speed means to generate an electric signal in the cable. The speed of the feeding means is controlled by servo means responsive to this electric signal to cause the feeding means to feed the cable into the metal at a rate that will substantially equal the rate at which the leading end of the cable is consumed by the molten metal. The electric signal also operates means that continuously registers the temperature of the metal.
Inventors
- 👤 P Blau
- 👤 G Zellner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:56
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/02; G01K7/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
144 words
Apparatus for continuously measuring the temperature of a body of molten metal, comprising a longitudinally movable cable containing a pair of laterally spaced thermocouple wires having exposed ends at the leading end of the cable, variable speed means for feeding the cable forward into said molten metal to thereby generate an electric signal in the cable, electric signal responsive control means operatively connected with said feeding means for controlling the speed thereof, means electrically connecting said thermocouple wires with said control means for regulation thereof to cause said feeding means to feed the cable into said molten metal at a rate that will substantially equal the rate at which the leading end of the cable is consumed by the molten metal, and means electrically connected with said thermocouple wires for continuously registering the temperature of said molten metal in response to said electric signal.
Claim 2
Dependent Claim
144 words
Apparatus for continuously measuring the temperature of a body of molten metal, comprising a longitudinally movable cable containing a pair of laterally spaced thermocouple wires having exposed ends at the leading end of the cable, variable speed means for feeding the cable forward into said molten metal to thereby generate an electric signal in the cable, electric signal responsive control means operatively connected with said feeding means for controlling the speed thereof, means electrically connecting said thermocouple wires with said control means for regulation thereof to cause said feeding means to feed the cable into said molten metal at a rate that will substantially equal the rate at which the leading end of the cable is consumed by the molten metal, and means electrically connected with said thermocouple wires for continuously registering the temperature of said molten metal in response to said electric signal.
Claim 3
Dependent Claim
13 words
Apparatus as recited in claim 1, including a refractory coating on said cable.
Claim 4
Dependent Claim
43 words
Apparatus as recited in claim 1, in which said cable includes metal sheath means encircling said wires, insulating material surrounding the wires and filling the sheath means, and a refractory coating on the outside of the metal sheath means to retard melting thereof.
Claim 5
Dependent Claim
46 words
Apparatus as recited in claim 1, including a tubular element through which said cable is fed by said feeding means, and means for blowing a stream of gas through said element to prevent molten metal from entering the end adjacent the leading end of the cable.
Claim 6
Dependent Claim
56 words
Apparatus as recited in claim 1, including A vertical tube down through which said cable is fed by said feeding means, a refractory tubular member detachably connected to the lower end of said vertical tube, and means connected with said vertical tube for lowering said refractory member into a layer of slag on said molten metal.
Claim 7
Dependent Claim
30 words
Apparatus as recited in claim 5, including a support for said lowering means, and means for connecting said support to an adjacent vertically movable oxygen lance for vertical movement therewith.
Claim 8
Dependent Claim
25 words
Apparatus as recited in claim 6, including a vertical guide sleeve rigidly connected to said support, said vertical tube being slidably disposed in said sleeve.
Claim 9
Dependent Claim
47 words
Apparatus as recited in claim 1, including an oxygen lance provided with an axial passage therethrough, a tubular element slidably disposed in said passage and projecting from its opposite ends, and means for moving said element lengthwise of the lance, said cable extending through said tubular element.
Claim 10
Dependent Claim
50 words
Apparatus as recited in claim 1, including a sleeve adapted to be inserted in an opening through a wall of a metal melting furnace, said thermocouple cable extending through said sleeve, and means for blowing a stream of gas lengthwise of the sleeve to keep molten metal away from it.
Claim 11
Dependent Claim
38 words
Apparatus as recited in claim 9, including a refractory tubular member slidably mounted in said sleeve, said cable extending through said member in sliding relation therewith, and means for moving said member back and forth in said sleeve.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |