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. 14, 2006
Filed:
Dec. 13, 2005
David P. Jackson, Saugus, CA (US);
David P. Jackson, Saugus, CA (US);
Cool Clean Technologies, Inc., Eagan, MN (US);
Abstract
An apparatus for treating a substrate with a cryogenic impingement fluid includes a protective enclosure defining an internal cavity, a cryogenic fluid applicator positioned within the internal cavity and a snow generation system connected to the cryogenic fluid applicator. The snow generation system includes a condensing subsystem and a diluent or propellant gas subsystem. Each subsystem is connectable to a common gas source. The condensing subsystem includes a condenser for condensing liquid carbon dioxide into solid carbon dioxide particles, or dry ice snow. The condenser includes at least two segments of differing diameter connected to one another. Liquid carbon dioxide is introduced into the smaller diameter first segment and upon entering the larger diameter second segment, solidifies into dry ice particles. The dry ice particles, along with diluent or propellant gas produced from the diluent subsystem, are delivered to the cryogenic fluid applicator via a coaxial delivery tube.