The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 1991
Filed:
Sep. 11, 1989
Applicant:
Inventors:
William E Horne, Renton, WA (US);
Arthur C Day, Renton, WA (US);
Assignee:
The Boeing Company, Seattle, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F17C / ;
U.S. Cl.
CPC ...
62 481 ; 62 502 ; 62 511 ;
Abstract
A cryocrucible permits the introduction of ion clusters of a cryogen, like oxygen or nitrogen, to a vacuum chamber, and preferably comprises a liquid cryogen containment vessel connected to an expansion chamber through a solenoid-actuated valve, a cooling means for maintaining the cryogen as a liquid in the containment vessel, and a nozzle connecting the expansion chamber to the vacuum chamber. Liquid evaporates through the valve into the expansion chamber and, then, forms clusters when it expands further while passing through the nozzle into the vacuum chamber.