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:
Oct. 29, 1991
Filed:
Jan. 25, 1990
Henry W Jackson, Pasadena, CA (US);
Other;
Abstract
A dilution refrigerator, the combination comprising an electrostatic mixing chamber containing .sup.3 He-rich and .sup.4 He-rich phases subject to separation in response to electrostatic force application, the chamber having an outlet for .sup.3 He that has passed through an interface between those two liquid phases to produce cooling; a still connected with the mixing chamber to receive .sup.3 He therefrom, the still having an outlet for .sup.3 He; two adsorption pumps connected with said still outlet to receive .sup.3 He vapor, alternately, there being a valve or valve system connected with each pump; heater structure associated with the pumps to cause .sup.3 He desorption by the pumps; a condenser-collector connected with the valves to receive desorbed .sup.3 He, .sup.3 He liquid being held at a flow path outlet from the condenser-collector; and a heat exchanger connected in a flow path from the condenser-collector back to the mixing chamber.