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:
Feb. 24, 2004
Filed:
Dec. 04, 2000
Abstract
The present invention relates to a method and a device for generating a two-phase gas-particle jet for treating surfaces by means of particles, in particular CO dry ice particles ( ), using a two-phase gas-particle jet. To this end, the CO dry ice particles ( ) are fed with a, tangential flow to a blasting chamber ( ) in such a manner that the CO dry ice particles ( ) are forced into a rotational movement about an axis of flow ( ), the angular velocity of this rotational movement then being increased in the direction of flow by means of a blasting nozzle ( ), so that maximum speeds occur in the blasting-nozzle outlet ( ). The two-phase gas-particle jet emerging from the blasting-nozzle outlet ( ) is formed in such a way that the solid-phase CO dry ice particles ( ) are arranged in a uniform ring shape with an enlarged external diameter. The invention achieves in particular a considerable rise in the surface power when cleaning surfaces by means of CO dry ice particles ( ).