Patent US2668947A successfully refreshed from Google Patents.
US4426569A
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US
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Temperature sensor assembly
Assignee: Applied Biosystems Inc
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Filing: 1982-07-13
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Granted: 1984-01-17
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Expires: 2002-07-13
Abstract
Abstract An effusion cell assembly is disclosed and includes a temperature sensor designed to balance sensor temperature and cell crucible temperature by an increased heat radiation collection.
Inventors
- 👤 Mark C. Miller
- 👤 John R. Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:48
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/54; C23C14/542; C23C14/543; G; G01; G01K; G01K17/00; G01K7/00; G01K7/02; G01K7/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
A temperature sensor assembly comprising: a crucible; means, substantially surrounding said crucible, for radiantly heating said crucible; a band of thermally conductive material positioned between said crucible and said means; first and second wires affixed to said band and being spaced apart thereby, said first and second wires forming first and second thermocouple junctions with said band where affixed thereto; and means, connected to said wires and said heating means, for monitoring and controlling the temperature of said crucible.
Claim 2
Dependent Claim
79 words
A temperature sensor assembly comprising: a crucible; means, substantially surrounding said crucible, for radiantly heating said crucible; a band of thermally conductive material positioned between said crucible and said means; first and second wires affixed to said band and being spaced apart thereby, said first and second wires forming first and second thermocouple junctions with said band where affixed thereto; and means, connected to said wires and said heating means, for monitoring and controlling the temperature of said crucible.
Claim 3
Dependent Claim
41 words
Assembly as claimed in claim 1 wherein: said means for radiant heating includes a ceramic support tube having a filament coil wrapped about a portion thereof; and said crucible being cooperatively adapted to be inserted into and supported by said tube.
Claim 4
Dependent Claim
26 words
Assembly as claimed in claim 2 wherein: said band is provided with a width greater than the linear distance between two adjacent windings of said coil.
Claim 5
Dependent Claim
15 words
Assembly as claimed in claim 1 wherein: said band is supported solely by said wires.
Claim 6
Dependent Claim
51 words
Assembly as claimed in claims 1 or 4 wherein: said wires and said band are cooperatively selected so as to permit current flow from said first wire through said band and from said band through said second wire when a thermally created electromotive force exists at said first and second junction.
Claim 7
Dependent Claim
34 words
Assembly as claimed in claim 5 wherein: said first wire is a tungsten alloy having about 3% rhenium; said second wire is a tungsten alloy having about 25% rhenium; and said band is tantalum.
Claim 8
Dependent Claim
16 words
Assembly as claimed in claim 1 wherein: said band is exposed to only radiant heat transfer.
References Cited (Backward Citations)
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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) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |