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:
Nov. 03, 1981
Filed:
Mar. 10, 1980
Frans A Staas, Eindhoven, NL;
Willem van Haeringen, Eindhoven, NL;
Adrianus P Severijns, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
A .sup.3 He-.sup.4 He dilution refrigerator comprises an upper mixing chamber for mixing liquid concentrated .sup.3 He and superfluid .sup.4 He, and a lower segregating chamber for separating concentrated .sup.3 He and superfluid .sup.4 He. An auxiliary chamber is situated between the mixing chamber and the segregating chamber. A connecting duct extends between the segregating chamber and the auxiliary chamber. The upper part of the auxiliary chamber communicates with the upper part of the mixing chamber for flow of concentrated .sup.3 He into the latter; and the lower part of the auxiliary chamber communicates with the lower part of the mixing chamber for flow of dilute .sup.3 He to the lower part of the auxiliary chamber.