US4368991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for differential thermal analysis
Assignee: TA Instruments Inc
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Filing: 1981-01-30
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Granted: 1983-01-18
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Expires: 2001-01-30
Abstract
Abstract The invention relates to an apparatus for differential thermal analysis, consisting of a furnace with holders to receive vessels sealed on all sides for samples and reference substances and with temperature sensors, which are in good thermal contact with the vessels, characterized in that the holders consist of a metal cylinder open on one side, whose inner diameter is adjusted to the outer diameter of the vessels, and whose bottom is in good thermal contact via a base plate with the furnace, and sensors arranged on the base plate in the immediate vicinity of the cylinder bottom.
Inventors
- 👤 Gunter Hentze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:07
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/20; G01N25/48; G01N25/4846; G01N25/4866; G01N25/4853; G01N25/486
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
105 words
Apparatus for differential thermal analysis, consisting of a furnace with holders to receive vessels sealed on all sides for samples and reference substances and with temperature sensors, which are in good thermal contact with the vessels, characterized in that the holders consist of a metal cylinder open on one side, whose inner diameter is adjusted to the outer diameter of the vessels, and whose bottom is in good thermal contact via a base plate with the furnace and is provided with pegs or grooves for centering on the base plate and sensors arranged on the base plate in the immediate vicinity of the cylinder bottom.
Claim 2
Dependent Claim
105 words
Apparatus for differential thermal analysis, consisting of a furnace with holders to receive vessels sealed on all sides for samples and reference substances and with temperature sensors, which are in good thermal contact with the vessels, characterized in that the holders consist of a metal cylinder open on one side, whose inner diameter is adjusted to the outer diameter of the vessels, and whose bottom is in good thermal contact via a base plate with the furnace and is provided with pegs or grooves for centering on the base plate and sensors arranged on the base plate in the immediate vicinity of the cylinder bottom.
Claim 3
Dependent Claim
27 words
Apparatus according to claim 1, characterized in that the vessels, except for the part placed in the metal cylinders, are arranged free standing in the furnace chamber.
Claim 4
Dependent Claim
22 words
Apparatus according to claim 1, characterized in that the vessels are designed for material volumes of 20 to 100 mm 3 .
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) | 1986-01-17 | 1986-07-19 | 1987-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-17 | 1990-07-19 | 1991-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-17 | 1994-07-19 | 1995-01-18 | $7700.00 | Window Closed / Lapsed |