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:
Jan. 30, 1979
Filed:
May. 11, 1977
Applicant:
Inventors:
Frans A Staas, Eindhoven, NL;
Adrianus P Severijns, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F25B / ;
U.S. Cl.
CPC ...
62502 ; 6251 / ;
Abstract
A .sup.3 He-.sup.4 He dilution refrigerator is provided with two interconnected mixing chambers arranged at different levels. One end of a superleak opens into concentrated .sup.3 He contained in the upper mixing chamber, while the other end opens into a portion of the apparatus containing dilute .sup.3 He for the supply of superfluid .sup.4 He, via the superleak, to the upper mixing chamber under the influence of the osmotic differential pressure prevailing across the superleak.