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. 02, 2004
Filed:
Feb. 14, 2003
Akikazu Odawara, Chiba, JP;
SII NanoTechnology Inc., Chiba, JP;
Abstract
A cooling apparatus has a storage vessel for storing a liquefied gas and an evaporated gas produced by evaporation of the liquefied gas, a cooling head cooled by the evaporated gas to approximately a boiling temperature of the liquefied gas, piping for conveying the evaporated gas from the storage vessel to the cooling head, and a gas collection port provided at one end portion of the piping above a liquid level of the liquefied gas for collecting only the evaporated gas from the storage vessel. Thus, contamination of a gas line, needle valve, or the like, can be avoided. In addition, a liquid level sensor may be provided in the storage vessel for sensing the liquid level of the liquefied gas, so that the gas collection port may be vertically moved within the storage vessel to collect cooled gas close to the liquid level.