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:
May. 26, 1987
Filed:
Jun. 17, 1985
Johann Chatzipetros, Frechen, DE;
Helmut Hackfort, Cologne, DE;
Kernforschungsanlage Julich GmbH, Julich, DE;
Abstract
A cold trap for the removal of a component from a gas mixture includes a cooling coil, made up of cooling sections of highly thermally conductive material and intermediate sections of low thermal conductivity, and a heating coil arranged for controlling the inlet temperature to equal the saturation temperature of that component in the gas mixture, its outlet temperature to equal the saturation temperature at a desired residual concentration of the component in the mixture and the temperature of cooling surfaces between the inlet and the outlet at a temperature which substantially falls linearly from the inlet temperature to the outlet temperature. The cooling surfaces extend generally perpendicular to the principal gas flow direction and the residence time of the gas is comparatively large so that the gas is practically at the temperature of the cooling surfaces at all times and nucleation in the gas spaces which might lead to obstruction of the flow passages is precluded.