Appratus for Treating a Workpiece with Granular Media
Author: Champaigne
Source: US Patent 8,388,407 B1
Doc ID: 2013001
Year of Publication: 2013
Abstract:
An apparatus for treating a workpiece with a granular media
includes a hopper for storing media and discharging the
media into a flow path. A source of compressed air mixes with
the media, which is forced through a nozzle for directing
media onto the workpiece. A flow sensor includes a beam
extending into the flow path and is responsive to flow of media
in the flow path to increase and decrease deflection of the
beam in response to increasing or decreasing flow of media
through said flow path. A proximity sensing device measures
deflection of the beam and generates an electrical signal
which varies in response to deflection of the beam. The flow
path is defined by a conduit having a branch in which the
beam is mounted. One end of the beam is mounted on a base
in the branch. The base is mounted on a cap closing an open
end of the branch, permitting the beam to be easily removed
and changed when necessary.
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