Patent US4243402A successfully refreshed from Google Patents.
US4243402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for measuring temperatures in molten metal
Assignee: PPG Industries Inc
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Filing: 1978-09-13
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Granted: 1981-01-06
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Expires: 1998-09-13
Abstract
Abstract The invention comprises a temperature sensing device comprising a thermocouple which is protected by a woven cloth. The cloth is impervious to wetting or transmission of the molten material whose temperature is to be measured. A thermocouple further is surrounded by weights of greater density than the molten metal in order to hold the thermocouple below the surface of the molten metal.
Inventors
- 👤 John E. Sensi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:34
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/14; C; C03; C03B; C03B18/00; C03B18/02; C03B18/18; G01K1/08; G01K7/00; G01K7/02; G01K7/04
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
63 words
Apparatus for measuring temperatures below the surface of liquids comprising temperature sensing means, high density weighting means and woven material impervious to said liquid surrounding said temperature sensing means and said weighting means with the proviso that said woven material comprises a fabric having fibers of a material selected from the group consisting of ceramic fibers, carbon fibers, metal fibers and mixtures thereof.
Claim 2
Dependent Claim
63 words
Apparatus for measuring temperatures below the surface of liquids comprising temperature sensing means, high density weighting means and woven material impervious to said liquid surrounding said temperature sensing means and said weighting means with the proviso that said woven material comprises a fabric having fibers of a material selected from the group consisting of ceramic fibers, carbon fibers, metal fibers and mixtures thereof.
Claim 3
Dependent Claim
13 words
The apparatus of claim 1 wherein said temperature sensing means comprises a thermocouple.
Claim 4
Dependent Claim
18 words
The apparatus of claim 1 wherein said temperature sensing means comprises a thermocouple in a protective metal tube.
Claim 5
Dependent Claim
19 words
The apparatus of claim 1 or 3 wherein said temperature sensing means is individually surrounded by additional woven material.
Claim 6
Dependent Claim
15 words
The apparatus of claim 1 or 3 wherein the weighting means comprises long tungsten rods.
Claim 7
Dependent Claim
15 words
The apparatus of claim 1 wherein said temperature sensing means comprises more than one thermocouple.
Claim 8
Dependent Claim
12 words
The apparatus of claim 1 wherein said woven material comprises ceramic fibers.
Claim 9
Dependent Claim
14 words
The apparatus of claim 1 or 7 wherein said woven material is braided sleeving.
Claim 10
Dependent Claim
19 words
The apparatus of claim 5 wherein interstices between said weighting means and said woven material are filled with cement.
Claim 11
Dependent Claim
13 words
The apparatus of claim 1 wherein said woven material is coated with cement.
Claim 12
Independent Claim
58 words
A method of temperature measurement in the molten metal bath of a forming chamber comprising inserting a weighted, flexible, woven fabric covered temperature sensing device in said molten metal under the glass in said forming chamber, wherein said fabric is impervious to said molten metal, and reading the temperature of said molten metal from said temperature sensing device.
Claim 13
Independent Claim
58 words
A method of temperature measurement in the molten metal bath of a forming chamber comprising inserting a weighted, flexible, woven fabric covered temperature sensing device in said molten metal under the glass in said forming chamber, wherein said fabric is impervious to said molten metal, and reading the temperature of said molten metal from said temperature sensing device.
Claim 14
Dependent Claim
17 words
The method of claim 11 wherein the said molten metal is tin and the weighting comprises tungsten.
Claim 15
Dependent Claim
12 words
The method of claim 11 wherein said woven fabric comprises ceramic fibers.
Claim 16
Dependent Claim
12 words
The method of claim 11 wherein said woven fabric is braided sleeving.
Claim 17
Dependent Claim
25 words
The method of claim 11 or 13 wherein said temperature sensing device comprises metal sleeved thermocouple covered with woven fabric and bundled with tungsten rods.
Claim 18
Dependent Claim
136 words
In a flat glass-forming chamber including an enclosed chamber containing a pool of glass-supporting molten metal, means for delivering molten glass onto the pool of molten metal at an inlet end, means for removing a continuous sheet of glass from the pool of molten metal and from the chamber at an outlet end, means for advancing glass along the surface of the molten metal from the inlet end to the outlet end of the chamber while forming it into a continuous sheet of desired width and thickness, wherein there is provided in said pool of molten metal at least one apparatus for measuring temperatures below the surface of said molten metal comprising temperature sensing means, high density weighting means and woven material impervious to said molten metal surrounding said temperature sensing means and said weighting means.
Claim 19
Dependent Claim
136 words
In a flat glass-forming chamber including an enclosed chamber containing a pool of glass-supporting molten metal, means for delivering molten glass onto the pool of molten metal at an inlet end, means for removing a continuous sheet of glass from the pool of molten metal and from the chamber at an outlet end, means for advancing glass along the surface of the molten metal from the inlet end to the outlet end of the chamber while forming it into a continuous sheet of desired width and thickness, wherein there is provided in said pool of molten metal at least one apparatus for measuring temperatures below the surface of said molten metal comprising temperature sensing means, high density weighting means and woven material impervious to said molten metal surrounding said temperature sensing means and said weighting means.
Claim 20
Dependent Claim
13 words
The chamber of claim 16 wherein said temperature sensing means comprises a thermocouple.
Claim 21
Dependent Claim
18 words
The chamber of claim 16 wherein said temperature sensing means comprises a thermocouple in a protective metal tube.
Claim 22
Dependent Claim
17 words
The chamber of claim 18 wherein said protective metal tube is individually surrounded by additional woven material.
Claim 23
Dependent Claim
15 words
The chamber of claim 16 or 18 wherein the weighting means comprises long tungsten rods.
Claim 24
Dependent Claim
15 words
The chamber of claim 16 wherein said temperature sensing means comprises more than one thermocouple.
Claim 25
Dependent Claim
15 words
The chamber of claim 16 wherein said woven material comprises braided sleeving of ceramic fibers.
Claim 26
Dependent Claim
19 words
The chamber of claim 19 wherein said woven material around said metal tube is impervious to said molten metal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |