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 Title: |
US6151900:
Cryogenic densification through introduction of a second cryogenic fluid
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Lak, Tibor I; Huntington Beach, CA
Rogers, Gene; San Pedro, CA
Weber, James F.; Moorpark, CA
Merlin, Michael V.; Anaheim, CA
Gaynor, III, Timothy L.; Cypress, CA
Davis, John E.; Claremont, CA
Gerhardt, David L.; Redondo Beach, CA
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| Assignee: |
Boeing Northamerican, Inc., Seal Beach, CA
other patents from BOEING NORTH AMERICAN INC. (729986) (approx. 89)
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| Published / Filed: |
2000-11-28
/ 1999-03-04
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| Application Number: |
US1999000262754
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| IPC Code: |
Advanced:
B64G 1/40;
B64G 5/00;
B67D 7/02;
F02K 9/42;
F02M 31/20;
F17C 5/02;
F25J 1/02;
Core:
B64G 1/22;
B67D 7/00;
F02K 9/00;
F02M 31/00;
F17C 5/00;
F25J 1/00;
more...
IPC-7:
F17C 5/02;
F17C 11/00;
F25B 19/00;
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| ECLA Code: |
B64G1/40B; B64G5/00; F17C5/02; F25J1/02; Y02E60/32B;
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| U.S. Class: |
Current:
062/046.1;
062/007;
062/047.1;
Original:
062/046.1;
062/047.1;
062/007;
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| Field of Search: |
062/51.1,48.3,49.1,46.1,7,47.1
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| Priority Number: |
| 1999-03-04 |
US1999000262754 |
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| Abstract: |
A system and method for cooling a first cryogenic liquid in a vessel comprises the steps of directing a second cryogenic into the first cryogenic fluid and releasing gas from the vessel. The first cryogenic fluid has a boiling point that is higher than the boiling point of the second cryogenic fluid. Directing the second cryogenic fluid into the first cryogenic fluid results in the second fluid cooling the first fluid and the second fluid vaporizing. The vaporized fluid is released as a gas from the vessel. The vessel may be a propellant tank for a space vehicle. The first and second cryogenic fluids are delivered from supplies located outside of the vehicle. The first cryogenic liquid may be oxygen and the second cryogenic liquid may be nitrogen, neon, or helium. In another aspect of the invention, the first cryogenic liquid may be hydrogen and the second cryogenic liquid may be helium.
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| Attorney, Agent or Firm: |
Stout, Uxa, Buyan & Mullins, LLP ;
Stout, Donald E. ;
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| Primary / Asst. Examiners: |
Doerrler, William;
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| INPADOC Legal Status: |
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| Designated Country: |
AT BE CH CY LI
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| Family: |
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First Claim:
Show all 25 claims |
What is claimed is:
1. A method for cooling a first cryogenic fluid in a vessel, the first cryogenic fluid having a boiling point, the method comprising the steps of:
- a. directing a second cryogenic fluid into the first cryogenic fluid, wherein the second cryogenic fluid has a boiling point that is lower than the first cryogenic fluid boiling point, whereby the first cryogenic fluid is cooled and a portion of the second cryogenic fluid becomes a gas; and
- b. releasing the gas from the vessel.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 3 U.S. patent(s) that reference this one
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