US4115168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbon monosulfide generating process
Assignee: McDonnell Douglas Corp
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Filing: 1975-10-20
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Granted: 1978-09-19
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Expires: 1995-10-20
Abstract
Abstract This application concerns a process for generating carbon monosulfide (CS) in quantity for a carbon monoxide (CO) chemical laser using thermochemical dissociation of carbon disufide (CS 2 ) in a high temperature (T≧ 2400 K) fuel-oxidizer flame.
Inventors
- 👤 Victor R. Buonadonna
- 👤 Ralph J. Richardson
- 👤 Richard L. Rasmussen
- 👤 William Q. Jeffers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:14
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/121; C; C01; C01B; C01B32/00; C01B32/70
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
121 words
A method of producing CS as an entity comprising the steps of heating CS 2 with a fuel-oxidizer flame in a system containing a fuel, an oxidizer and CS 2 to a temperature of at least 2400 K to produce a mixture of CS and CS 2 , recovering the mixture from the system in a form in which the ratio of CS/CS 2 is at least 2 by passing the gases produced by the system through a nozzle in a supersonic expansion thereby to preserve the CS as an entity in the mixture for a predetermined period of time by means of said supersonic expansion, and employing said mixture to utilize said CS entity within said predetermined period of time.
Claim 2
Independent Claim
121 words
A method of producing CS as an entity comprising the steps of heating CS 2 with a fuel-oxidizer flame in a system containing a fuel, an oxidizer and CS 2 to a temperature of at least 2400 K to produce a mixture of CS and CS 2 , recovering the mixture from the system in a form in which the ratio of CS/CS 2 is at least 2 by passing the gases produced by the system through a nozzle in a supersonic expansion thereby to preserve the CS as an entity in the mixture for a predetermined period of time by means of said supersonic expansion, and employing said mixture to utilize said CS entity within said predetermined period of time.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein the fuel-oxidizer system is C 2 N 2 --O 2 .
Claim 4
Dependent Claim
24 words
The method of claim 2 wherein the C 2 N 2 /O 2 ratio is more than about 1.0 and less than about 1.3.
Claim 5
Dependent Claim
24 words
The method of claim 1 wherein the molar fraction of the reactant CS 2 is less than about 33 molar percent in the input.
Claim 6
Dependent Claim
18 words
The method of claim 1 wherein the molar fraction of the reactant CS 2 is about 0.1- 0.2.
Claim 7
Dependent Claim
29 words
The method of claim 1 wherein the fuel-oxidizer system is C 2 N 2 -O 2 and the ratio of C 2 N 2 /O 2 is about 1.1.
Claim 8
Dependent Claim
15 words
The method of claim 1 wherein the supersonic expansion flow is Mach 2 or more.
References Cited (Backward Citations)
US2744380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |