US3841155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction vessel for isothermal calorimetry
Assignee: BASF SE
•
Filing: 1972-11-24
•
Granted: 1974-10-15
•
Expires: 1992-11-24
Abstract
Abstract A reaction vessel for isothermal calorimetry, in which the container for the sample consists of two snugly fitting hollow cylindrical bodies, between which there are one or more recesses for the accommodation of the sample.
Inventors
- 👤 H Scherer
- 👤 G Schlereth
- 👤 W Koehler
- 👤 O Riedel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:37
CPC Classifications
G; G01; G01N; G01N25/00; G01N25/20; G01N25/48; G01N25/4846; G01N25/4853; G01N25/486; G01K; G01K17/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
236 words
A reaction vessel for isothermal calorimetry embodying a hollow, heat-conducting, substantially cylindrical, heating cupshaped vessel having a heating coil about said heating vessel, a container snugly and removably fitted in said heating vessel, and temperature sensor means positioned in said vessel adjacent said container, the improvement which comprises two concentric, hollow, substantially cylindrical bodies snugly fitted together to form said container with the outer wall of the inner hollow body lying snugly against the inner wall of the outer hollow body, the outer wall of said outer body lying snugly against the inner wall of said vessel, a spiral groove in at least one of said walls forming a spiral passage between walls, passage means in one of said bodies for supplying a gas to one end of said spiral groove, additional passage means in one of said bodies for withdrawing gas from the other end of said spiral groove, and a sample of powdered or granulated solids in said spiral groove, whereby said spiral groove may be filled with a weighed amount of said powdered or granulated sample by vibrating said container apart from said heating vessel, gas may be passed through the sample-filled spiral groove after mounting of said container in said heating vessel for isothermal calorimetric studies and said sample may be cleansed from said spiral groove by removal of said container and disassembly of said hollow bodies to expose said spiral groove.
Claim 2
Dependent Claim
236 words
A reaction vessel for isothermal calorimetry embodying a hollow, heat-conducting, substantially cylindrical, heating cupshaped vessel having a heating coil about said heating vessel, a container snugly and removably fitted in said heating vessel, and temperature sensor means positioned in said vessel adjacent said container, the improvement which comprises two concentric, hollow, substantially cylindrical bodies snugly fitted together to form said container with the outer wall of the inner hollow body lying snugly against the inner wall of the outer hollow body, the outer wall of said outer body lying snugly against the inner wall of said vessel, a spiral groove in at least one of said walls forming a spiral passage between walls, passage means in one of said bodies for supplying a gas to one end of said spiral groove, additional passage means in one of said bodies for withdrawing gas from the other end of said spiral groove, and a sample of powdered or granulated solids in said spiral groove, whereby said spiral groove may be filled with a weighed amount of said powdered or granulated sample by vibrating said container apart from said heating vessel, gas may be passed through the sample-filled spiral groove after mounting of said container in said heating vessel for isothermal calorimetric studies and said sample may be cleansed from said spiral groove by removal of said container and disassembly of said hollow bodies to expose said spiral groove.
Claim 3
Dependent Claim
16 words
A reaction vessel as claimed in claim 1 wherein said hollow bodies are tapered hollow bodies.
Claim 4
Dependent Claim
27 words
A reaction vessel as claimed in claim 2, said vessel having a tapered cylindrical wall lying snugly against the tapered outer wall of said outer hollow body.
Claim 5
Dependent Claim
15 words
A reaction vessel as claimed in claim 2, said hollow bodies being stainless steel bodies.
Claim 6
Dependent Claim
232 words
A calorimeter comprising an insulated housing, a closed, thermostatically controlled chamber in said housing, a wall of said chamber being three concentric metal cylinders, a heating coil between the two outErmost metal cylinders, a spiral gas supply tube between the two innermost metal cylinders; a reaction vessel mounted in said chamber, said vessel comprising a hollow, heat-conducting, substantially cylindrical vessel suspended in said chamber, a heating coil about said vessel, and a container snugly and removably fitted within said vessel; said container being two concentric, hollow, substantially cylindrical bodies snugly fitted together to form said container with the outer wall of the inner hollow body lying snugly against the inner wall of the outer hollow body lying snugly against the inner wall of the outer hollow body, a spiral groove in at least one of said walls forming a spiral passage between said walls; a tube connecting said gas supply tube and passage means in one of said bodies for supplying a gas to one end of said spiral groove; and a second gas exit tube connecting additional passage means in one of said bodies communicating with the other end of said spiral groove, said second tube projecting through said chamber and said insulated housing, whereby supply gas passing through said heating coil to said vessel reaches the temperature of said chamber prior to entry of the gas into said reaction vessel.
Claim 7
Dependent Claim
232 words
A calorimeter comprising an insulated housing, a closed, thermostatically controlled chamber in said housing, a wall of said chamber being three concentric metal cylinders, a heating coil between the two outErmost metal cylinders, a spiral gas supply tube between the two innermost metal cylinders; a reaction vessel mounted in said chamber, said vessel comprising a hollow, heat-conducting, substantially cylindrical vessel suspended in said chamber, a heating coil about said vessel, and a container snugly and removably fitted within said vessel; said container being two concentric, hollow, substantially cylindrical bodies snugly fitted together to form said container with the outer wall of the inner hollow body lying snugly against the inner wall of the outer hollow body lying snugly against the inner wall of the outer hollow body, a spiral groove in at least one of said walls forming a spiral passage between said walls; a tube connecting said gas supply tube and passage means in one of said bodies for supplying a gas to one end of said spiral groove; and a second gas exit tube connecting additional passage means in one of said bodies communicating with the other end of said spiral groove, said second tube projecting through said chamber and said insulated housing, whereby supply gas passing through said heating coil to said vessel reaches the temperature of said chamber prior to entry of the gas into said reaction vessel.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |