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US 4,312,156 AGranted
Apparatus for cryogenic shot-blasting
AssigneeAir Products and Chemicals, Inc.
InventorThomas E. McWhorter
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AssigneeAir Products and Chemicals, Inc.
InventorThomas E. McWhorter
Estimating the term…
This invention is directed to an apparatus for subjecting an article to shot blasting under cryogenic conditions which comprises a housing encompassing an entry station, an impacting station and an exit station. In connection with the housing, there are means provided for transporting an article to be shot blasted sequentially from the entry station, through the impacting station, and then to the station. A connection is made to the housing permitting the introduction of a cryogen into the impacting station thereby maintaining such station at a cryogenic temperature. The apparatus also has a means for directing media at a high velocity so as to impact upon an article to be treated while such article is being transported through the impacting station. The apparatus of the invention also functions to rotate the article while it is being transported through the impacting station, thereby permitting the stream of media to contact all critical portions of the article.
An apparatus for cryogenically shot blasting an article which comprises a housing including an entry station, an entry port communicating between the entry station and the exterior of the housing, an impacting station, an exit station, and an exit port communicating between the exit station and the exterior of the housing, the exit port being at a greater vertical elevation than the entry port and both the entry port and the exit port being at a greater vertical elevation than the impacting station, means for introducing a cryogen into the housing, means for transporting an article to be treated sequentially from the entry station, through the impacting station and to the exit station, means for directing media at high velocity to impact upon an article being transported through the impacting station, and means for rotating the article while being transported through the impacting station, said impacting station being maintained at a cryogenic temperature.
Dependencies are inferred from the claim text.