Patent US4444734A successfully refreshed from Google Patents.
US4444734A
Expired / Lapsed
US
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Process for pumping gases using a chemically reactive aerosol
Assignee: Raytheon Co
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Filing: 1980-07-28
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Granted: 1984-04-24
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Expires: 2000-07-28
Abstract
Abstract The specification describes a process and apparatus for pumping and removal of unwanted gases by effecting a chemical reaction between the gases and a highly reactive substance which is in the form of aerosol particles, to form a non-volatile, solid reaction product. In one embodiment of the invention, the reactive substance is initially provided in the form of a solid; the solid is heated to liquify it; and the liquid is forced through spray nozzles under high pressure to form the desired aerosol particles, which then react with the gas to be pumped.
Inventors
- 👤 Frithjof N. Mastrup
- 👤 Leonard J. Marabella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:04
CPC Classifications
B; B01; B01J; B01J10/00; B01D; B01D53/00; B01D53/34; F; F04; F04B; F04B37/00; F04B37/02; H; H01; H01S; H01S3/00; H01S3/09; H01S3/095
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
114 words
A process for pumping a selected gaseous material to remove it from a container which comprises: (a) providing a chosen highly reactive substance in solid form; (b) heating said solid highly reactive substance at a predetermined elevated temperature sufficient to change said solid to a liquid; (c) causing said liquid to flow through a means for dispersing said liquid into aerosol particles; and (d) mixing said aerosol particles with said gaseous material in a reaction chamber to cause a chemical reaction therebetween of the type sufficient to form a solid, nonvolatile reaction product and to thereby generate a partial vacuum in said chamber and provide the pumping of said gaseous material from said container.
Claim 2
Dependent Claim
114 words
A process for pumping a selected gaseous material to remove it from a container which comprises: (a) providing a chosen highly reactive substance in solid form; (b) heating said solid highly reactive substance at a predetermined elevated temperature sufficient to change said solid to a liquid; (c) causing said liquid to flow through a means for dispersing said liquid into aerosol particles; and (d) mixing said aerosol particles with said gaseous material in a reaction chamber to cause a chemical reaction therebetween of the type sufficient to form a solid, nonvolatile reaction product and to thereby generate a partial vacuum in said chamber and provide the pumping of said gaseous material from said container.
Claim 3
Dependent Claim
31 words
The process as set forth in claim 1 wherein said liquid is caused to flow through said dispersing means by applying to said liquid a chosen inert gas under predetermined pressure.
Claim 4
Dependent Claim
25 words
The process as set forth in claim 2 wherein said inert gas is chosen from the group consisting of argon, neon, helium, xenon, and krypton.
Claim 5
Dependent Claim
33 words
The process as set forth in claim 1 wherein the selected gaseous material is removed to thereby produce a pressure of 1 torr or more in the original container of said gaseous material.
Claim 6
Dependent Claim
48 words
The process defined in claim 1 wherein said highly reactive substance is selected from the group consisting of lithium, sodium, potassium, calcium, mixtures thereof, and a substance which has a high chemical affinity for said gaseous material and forms solid, non-volatile products by reaction with said gaseous material.
Claim 7
Dependent Claim
46 words
The process defined in claim 1 wherein said gaseous material is selected from the group consisting of nitrogen; oxygen; a mixture comprising nitrogen, hydrogen, deuterium, and hydrogen flouride; and a gas which is capable of reacting with said reactive substance to form a solid, non-volatile product.
Claim 8
Dependent Claim
194 words
A process for pumping certain exhaust gases from a container therefor by converting said gases into solids suitable for solution into and transport by a selected liquid transporting medium, which comprises: (a) providing a chosen highly reactive substance in liquid form, said reactive substance being selected from the group consisting of lithium, sodium, potassium, calcium, mixtures thereof, and a substance which has a high chemical affinity for said exhaust gases and forms solid, nonvolatile products by reaction with said exhaust gases; (b) causing said liquid to flow through a means for dispersing said liquid into aerosol particles by applying to said liquid a chosen inert gas under predetermined pressure; and (c) mixing said exhaust gases selected from the group consisting of nitrogen; oxygen; a mixture comprising nitrogen, hydrogen, deuterium, and hydrogen fluoride; and a gas which is capable of reacting with said reactive substance to form a solid, nonvolatile product, with said particles in a reaction chamber to cause a chemical reaction between said particles and said gases, of the type sufficient to form a solid reaction product which deposits in a chosen location and to thereby generate a partial vacuum in said chamber.
Claim 9
Dependent Claim
194 words
A process for pumping certain exhaust gases from a container therefor by converting said gases into solids suitable for solution into and transport by a selected liquid transporting medium, which comprises: (a) providing a chosen highly reactive substance in liquid form, said reactive substance being selected from the group consisting of lithium, sodium, potassium, calcium, mixtures thereof, and a substance which has a high chemical affinity for said exhaust gases and forms solid, nonvolatile products by reaction with said exhaust gases; (b) causing said liquid to flow through a means for dispersing said liquid into aerosol particles by applying to said liquid a chosen inert gas under predetermined pressure; and (c) mixing said exhaust gases selected from the group consisting of nitrogen; oxygen; a mixture comprising nitrogen, hydrogen, deuterium, and hydrogen fluoride; and a gas which is capable of reacting with said reactive substance to form a solid, nonvolatile product, with said particles in a reaction chamber to cause a chemical reaction between said particles and said gases, of the type sufficient to form a solid reaction product which deposits in a chosen location and to thereby generate a partial vacuum in said chamber.
Claim 10
Dependent Claim
25 words
The process as set forth in claim 7 wherein said inert gas is selected from the group consisting of argon, neon, helium, xenon, and krypton.
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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) | 1987-04-24 | 1987-10-24 | 1988-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-24 | 1991-10-24 | 1992-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-24 | 1995-10-24 | 1996-04-24 | $7700.00 | Window Closed / Lapsed |