Patent ID: 8152607

Claim:
A portable work station, comprising: a main housing having a bottom wall, a top wall, a first end wall, a second end wall, a back wall and an open front wall; said walls of said main housing defining an interior compartment; wheels on said bottom wall of said main housing whereby the work station may be moved from one location to another; a filter assembly positioned at said front wall of said main housing which filters air drawn into said main housing through said front wall thereof; said top wall of said main housing having an air exhaust opening formed therein; a fan and motor housing, having open upper and lower ends, selectively removably secured to said top wall of said main housing and extending upwardly therefrom; said open lower end of said fan and motor housing communicating with said exhaust opening in said top wall of said main housing; a fan and motor assembly positioned in said fan and motor housing which draws air upwardly from said main housing through said exhaust opening in said top wall thereof and forces the air outwardly through said open upper end of said fan and motor housing; a transition housing having open upper and lower ends; said lower end of said transition housing being selectively removably secured to said upper end of said fan and motor housing and extending upwardly therefrom; an exhaust housing having an open lower end and an upper exhaust opening; said open lower end of said exhaust housing being selectively removably secured to said upper end of said transition housing; a filter assembly at said exhaust opening of said exhaust housing; a divider wall in said main housing which extends between said walls thereof to define an air compartment and a ballast compartment; said air compartment extending between said open front wall of said main housing and said exhaust opening in said top wall of said main housing; said back wall of said main housing having at least one opening formed therein which communicates with said ballast compartment to enable ballast material to be placed in said ballast compartment; a drape support framework is secured to said main housing and extends upwardly therefrom; a drape assembly is selectively removably attached to said drape support framework.