US4056407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermocouple
Assignee: M-R OHIO Inc A OHIO CORP
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Filing: 1976-03-31
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Granted: 1977-11-01
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Expires: 1996-03-31
Abstract
Abstract A thermocouple assembly is provided wherein dissimilar metals are joined at a hot junction within a protective annular shield transparent to radiation. The hot junction is formed in situ so as to be in intimate contact with the ID of said shield. When the assembly is mounted on a phase change cup, one of the dissimilar metals is insulated from the cup.
Inventors
- 👤 Omer P. Cure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:09
CPC Classifications
G; G01; G01K; G01K7/00; G01K7/02; G01K7/023; G01K13/00; G01K13/12; G01K13/125
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
127 words
A thermocouple assembly comprising a cup of refractory material having oppositely disposed walls, a quartz tube extending across the interior of said cup, opposite ends of said tube passing through and being supported by said oppositely disposed walls, dissimilar metal thermocouple wires having an OD less than the ID of said tube welded together at a hot junction within said quartz tube, only said hot junction weld being in contact with substantially 360° of the inner circumference of said tube adjacent said weld, each thermocouple wire extending from a discrete opposite end of said tube, an exterior surface of said cup supporting the free ends of said thermocouple wires as exposed contacts, and means for electrically insulating at least one of said thermocouple wires from said cup.
Claim 2
Dependent Claim
127 words
A thermocouple assembly comprising a cup of refractory material having oppositely disposed walls, a quartz tube extending across the interior of said cup, opposite ends of said tube passing through and being supported by said oppositely disposed walls, dissimilar metal thermocouple wires having an OD less than the ID of said tube welded together at a hot junction within said quartz tube, only said hot junction weld being in contact with substantially 360° of the inner circumference of said tube adjacent said weld, each thermocouple wire extending from a discrete opposite end of said tube, an exterior surface of said cup supporting the free ends of said thermocouple wires as exposed contacts, and means for electrically insulating at least one of said thermocouple wires from said cup.
Claim 3
Dependent Claim
43 words
A thermocouple assembly in accordance with claim 1 including a recessed section in the bottom of said cup, said recessed section including a generally vertically extending wall, said portions of the thermocouple wires exterior of said tube extending upwardly along said vertical wall.
Claim 4
Dependent Claim
40 words
A thermocouple assembly in accordance with claim 1 including grooves on the exterior wall of said cup and a recessed section on the bottom of said cup for receiving portions of the thermocouple wires which are exterior of said tube.
Claim 5
Dependent Claim
30 words
A thermocouple assembly in accordance with claim 3 wherein said insulating means includes an insulating layer extending along at least one of said grooves and upwardly into said recessed section.
Claim 6
Dependent Claim
22 words
A thermocouple assembly in accordance with claim 4 including means for interconnecting said grooves on the exterior wall with said recessed section.
Claim 7
Dependent Claim
20 words
A thermocouple assembly in accordance with claim 5 wherein said interconnecting means includes grooves on the bottom of said cup.
References Cited (Backward Citations)
US2223408A
Cited
US3065286A
Cited
US3449174A
Cited
US3556865A
Cited
US3748908A
Cited
US3946594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-31 | 1981-05-02 | 1981-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-31 | 1985-05-02 | 1985-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-31 | 1989-05-02 | 1989-11-01 | $7700.00 | Window Closed / Lapsed |