METHOD AND APPARATUS TO ISOLATE THE COLD IN CRYOGENIC EQUIPMENT
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United States of America Patent
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Issued Date -
Oct 20, 2016
app pub date -
Nov 27, 2014
filing date -
Dec 9, 2013
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Abstract
An apparatus and a method are provided for spraying a cryogenic fluid (2) to a work piece (1) which includes a cryogen feed line (3), at least one delivery nozzle (4) for delivering the cryogenic fluid (2), a shroud (6) which surrounds at least part of said delivery nozzle (4) and which has a front face with an opening which is directed to the workpiece. The shroud (6) and the work piece (1) are movable relative to each other between a working configuration and a maintenance configuration, In the maintenance configuration the shroud (6) comprises a barrier which prevents or minimizes ambient air from entering the shroud (6).
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