Patent US3960604A successfully refreshed from Google Patents.
US3960604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for temperature measurements
Assignee: Schwarzkopf Technologies Corp
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Filing: 1974-04-15
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Granted: 1976-06-01
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Expires: 1994-04-15
Abstract
Abstract An improved thermocouple sensor is disclosed comprising a pair of thermocouple wires formed from tungsten-rhenium or molybdenum-rhenium alloys and terminating in ends adapted for thermocouple application, and a metal mass of tungsten or molybdenum intimately contacting the terminal wire ends so as to form an electrical connection therebetween and means for making same.
Inventors
- 👤 Friedrich Heitzinger
- 👤 Wilhelm Lechleitner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:24
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/08
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
63 words
In a thermocouple measuring device for the measurement of temperature, an improved thermocouple sensor comprising a pair of thermocouple wires formed from tungsten-rhenium or molybdenum-rhenium alloys and terminating in ends adapted for thermocouple application, and a metal mass of tungsten or molybdenum intimately contacting said terminal wire ends so as to form an electrical connection therebetween at the measuring end of the device.
Claim 2
Dependent Claim
63 words
In a thermocouple measuring device for the measurement of temperature, an improved thermocouple sensor comprising a pair of thermocouple wires formed from tungsten-rhenium or molybdenum-rhenium alloys and terminating in ends adapted for thermocouple application, and a metal mass of tungsten or molybdenum intimately contacting said terminal wire ends so as to form an electrical connection therebetween at the measuring end of the device.
Claim 3
Dependent Claim
13 words
Device according to claim 1 wherein said metal mass is a sintered plug.
Claim 4
Dependent Claim
38 words
Device according to claim 1 wherein said pair of thermocouple wires is comprised of a molybdenum-rhenium alloy, one wire thereof containing from about 1% to about 10% rhenium and the other from about 30% to about 48% rhenium.
Claim 5
Dependent Claim
17 words
Device according to claim 3 wherein one wire contains 5% rhenium and the other contains 41% rhenium.
Claim 6
Dependent Claim
16 words
Device according to claim 1 wherein said tungsten or molybdenum metal mass is alloyed with rhenium.
Claim 7
Dependent Claim
16 words
Device according to claim 1 further comprising a hollow sheath dimensioned to receive said metal mass.
Claim 8
Dependent Claim
13 words
Device according to claim 6 wherein said sheath is a gastight ceramic tube.
Claim 9
Dependent Claim
15 words
Device according to claim 7 wherein said ceramic tube is made of a refractory oxide.
Claim 10
Dependent Claim
29 words
Device according to claim 6 wherein said sheath is a metal ceramic tube, the metallic component of which is the same base metal as that of the thermocouple wires.
Claim 11
Dependent Claim
20 words
Device according to claim 9 wherein said metal ceramic tube comprises molybdenum or tungsten metal combined with a refractory oxide.
Claim 12
Dependent Claim
11 words
Device according to claim 10 wherein said refractory oxide is zirconia.
Claim 13
Dependent Claim
25 words
Device according to claim 11 wherein the metal ceramic tube further comprises from about 4% to about 10% by weight of calcium oxide or magnesia.
Claim 14
Dependent Claim
33 words
Device according to claim 6 wherein said metal mass and hollow sheath are shaped so that said metal mass is in conforming contact with said sheath at the measuring end of the device.
Claim 15
Dependent Claim
19 words
Device according to claim 6 further comprising a seal at the end of the sheath opposite said measuring end.
Claim 16
Dependent Claim
14 words
Device according to claim 14 wherein said seal is comprised of a synthetic resin.
Claim 17
Dependent Claim
30 words
Device according to claim 6 further comprising a rigid tube containing said pair of wires and connected to said metal mass so as to extend therefrom axially within said sheath.
Claim 18
Dependent Claim
59 words
A method for the production of a device according to claim 1 which comprises inserting the ends of a pair of thermocouple wires formed from tungsten-rhenium or molybdenum-rhenium alloys into a mold containing powdered tungsten or molybdenum metal admixed with a binder, permitting the molded metal mass to solidify and removing the resulting solidified metal mass from the mold.
Claim 19
Dependent Claim
13 words
The method of claim 17 wherein said molded metal mass solidifies by setting.
Claim 20
Dependent Claim
18 words
The method of claim 17 wherein said binder is volatile and said molded metal mass solidifies by drying.
Claim 21
Dependent Claim
38 words
The method of claim 17 wherein said pair of thermocouple wires is comprised of a molybdenum-rhenium alloy, one wire thereof containing from about 1% to about 10% rhenium and the other from about 30% to about 48% rhenium.
Claim 22
Dependent Claim
17 words
The method of claim 20 wherein one wire contains 5% rhenium and the other contains 41% rhenium.
Claim 23
Dependent Claim
15 words
The method of claim 17 wherein said tungsten or molybdenum metal is alloyed with rhenium.
Claim 24
Dependent Claim
24 words
The method of claim 17 further comprising the step of inserting the resulting device into a thermocouple sheath and sintering the molded metal mass.
References Cited (Backward Citations)
US3048641A
Cited
US3554816A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |