US3861878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
General purpose analyzer for plasma media
Assignee: United States Department of the Navy
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Filing: 1972-12-19
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Granted: 1975-01-21
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Expires: 1992-12-19
Abstract
Abstract A hollow cylinder within an outer jacket having plasma identifying means therein is used to study chemical reaction samples adiabatically. The cylinder contains a sampling port adjacent the plasma identifying means, and heating means to control the temperature profile of the cylinder.
Inventors
- 👤 Corpo James J De
- 👤 Michael V Mcdowell
- 👤 Fred E Saalfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:27
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/0006; H05H1/0012; H05H1/0037; H05H1/01
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
159 words
APPARATUS COMPRISING: A. AN UPRIGHT HOLLOW CYLINDER HAVING AN ELECTRICALLY CONDUCTIVE COATING THEREON; B. AN OUTER JACKET SEALINGLY ENGAGED ABOUT SAID CYLINDER; C. A VACUMM SOURCE CONNECTED TO SAID JACKET; D. INLET MEANS IN THE LOWER PORTION OF SAID CYLINDER; E. EXHAUST MEANS IN THE UPPER PORTION OF SAID CYLINDER; F.LOWER HEATING MEANS ABOVE SAID INLET MEANS; G. UPPER HEATING MEANS, SABELOW SAID EXHAUST MEANS; H. A SAMPLING PORT IN SAID CYLINDER BETWEEN SAID UPPER AND LOWER HEATING MEANS, SAID PORT BEING ABOUT 25 MICRONS IN DIAMETER AND FLUSH WITH THE INNER WALL OF SAID CYLINDER, I. A PLASMA IDENTIFYING MEANS LOCATED WITHIN SAID JACKET AND ADJACENT TO SAID SAMPLING PORT AT SUCH DISTANCE THAT THE TRAVERSE TIME OF A PLASMA SAMPLE FROM SAID SAMPLING PORT TO SAID PLASMA IDENTIFYING MEANS IS FROM ABOUT 3 TO ABOUT 5 MICROSECONDS. J. MEANS TO REGULATE SAID UPPER AND LOWER HEATING MEANS, SO THAT SPECIFIC TEMPERATURE PROFILE IS MAINTAINED IN SAID CYLINDER.
Claim 2
Dependent Claim
159 words
APPARATUS COMPRISING: A. AN UPRIGHT HOLLOW CYLINDER HAVING AN ELECTRICALLY CONDUCTIVE COATING THEREON; B. AN OUTER JACKET SEALINGLY ENGAGED ABOUT SAID CYLINDER; C. A VACUMM SOURCE CONNECTED TO SAID JACKET; D. INLET MEANS IN THE LOWER PORTION OF SAID CYLINDER; E. EXHAUST MEANS IN THE UPPER PORTION OF SAID CYLINDER; F.LOWER HEATING MEANS ABOVE SAID INLET MEANS; G. UPPER HEATING MEANS, SABELOW SAID EXHAUST MEANS; H. A SAMPLING PORT IN SAID CYLINDER BETWEEN SAID UPPER AND LOWER HEATING MEANS, SAID PORT BEING ABOUT 25 MICRONS IN DIAMETER AND FLUSH WITH THE INNER WALL OF SAID CYLINDER, I. A PLASMA IDENTIFYING MEANS LOCATED WITHIN SAID JACKET AND ADJACENT TO SAID SAMPLING PORT AT SUCH DISTANCE THAT THE TRAVERSE TIME OF A PLASMA SAMPLE FROM SAID SAMPLING PORT TO SAID PLASMA IDENTIFYING MEANS IS FROM ABOUT 3 TO ABOUT 5 MICROSECONDS. J. MEANS TO REGULATE SAID UPPER AND LOWER HEATING MEANS, SO THAT SPECIFIC TEMPERATURE PROFILE IS MAINTAINED IN SAID CYLINDER.
Claim 3
Dependent Claim
14 words
An apparatus according to claim 1 wherein said electrically conductive coating is stannic oxide.
Claim 4
Dependent Claim
14 words
An apparatus according to claim 1 wherein said plasma identifying means is a spectrometer.
Claim 5
Dependent Claim
13 words
An apparatus according to claim 3 wherein said spectrometer is a mass spectrometer.
Claim 6
Dependent Claim
24 words
An apparatus according to claim 1 wherein said upper and lower heating Means comprises silver print paint in conjunction with an electrical energy source.
Claim 7
Dependent Claim
14 words
An apparatus according to claim 1 wherein said sampling port is a cone-shaped opening.
Claim 8
Dependent Claim
15 words
An apparatus according to claim 1 wherein said exhaust means further includes a vacuum pump.
Claim 9
Dependent Claim
13 words
An apparatus according to claim 1 wherein said jacket contains a viewing port.
Claim 10
Dependent Claim
29 words
An apparatus according to claim 1 wherein said means to regulate the heating means includes temperature sensor probes extended axially within said cylinder at each end of said cylinder.
Claim 11
Dependent Claim
15 words
An apparatus according to claim 1 wherein a compressor is located at said inlet means.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |