Patent ID: 8216033
Filing Date: 2012-07-10
Classification: F26B

Abstract:
1. A blow-off assembly operable with low-pressure compressed air supplies to provide converging airflow around one or more objects moving through the assembly, the blow-off assembly comprising: a body having an interior wall and an exterior wall, the interior wall defining a bore extending through the body for receiving one or more objects through the blow-off assembly, and the exterior wall surrounding the interior wall and defining an air reservoir within the body generally between the exterior wall and interior wall; a cap configured to be coupled to the body to cover at least part of the air reservoir; wherein the bore includes a generally tapered end and the cap includes a generally tapered inner lip; wherein the tapered end of the bore and the tapered inner lip of the cap define an opening therebetween for discharging air from the air reservoir through the opening with an exit velocity of at least about 2,000 feet per minute in a generally converging airflow pattern forward of the cap and around the one or more objects passing through the blow-off assembly; and wherein the blow-off assembly is operable with input air pressures of twelve pounds per square inch gauge or less.