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Title: Media Transport Device Providing Stable Flow of Media
Author: Jack Champaigne, Mishawaka, IN
Source: US Patent 7,125,322 B1
Publication year 2006
Document number: 2006038
Number of pages: 3
Abstract:
ABSTRACT
A media transport device for use in shot peening, blast cleaning, granite cutting, and similar applications transports media from a storage hopper to a workpiece. The media
transport device includes a source of compressed air, a supply hose connecting the compressed air source to a mixing chamber, and a blast hose connecting the mixing chamber
to a nozzle dispensing the media onto a workpiece. The mixing chamber defines a flow path for the compressed air between the supply hose and the blast hose and includes an
inlet portion connected to the supply hose, an outlet portion connected to the blast hose, and a curved dispensing portion conveying media from the storage hopper into the
flow path obliquely with respect to the flow path so that laminar flow through the mixing chamber is not substantially disturbed. The inlet portion is of sufficient length
to assure laminar flow of compressed air through the mixing changer before the media is introduced into the flow stream, and the outlet portion includes a section tapering
to a diameter substantially equal to the inner diameter of the blast hose.
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