Vacuum extraction recovery system assembly

Claim 1

Vacuum extraction recovery system assembly comprising a compartmentalized vacuum housing having a substantially air tight exterior wall and an interior which is bounded from below by a bottom floor portion and which includes a first lateral interior portion and a second lateral interior portion disposed upwardly of such bottom floor portion, means for creating a vacuum disposed in the first lateral portion of the interior of the housing, wall surface means containing a constantly freely open flow aperture therein and defining together with an adjacent portion of the exterior wall of the housing thereat an interior vacuum compartment disposed in the second lateral portion of the interior of the housing and laterally remotely spaced from the means for creating a vacuum disposed in the first lateral portion of the interior of the housing and in constant, and freely open flow communication with the remainder of the interior of the housing through the flow aperture and said interior vacuum compartment is thereby constantly maintained by such freely open flow aperture under vacuum condition corresponding to the vacuum condition in the remainder of the interior of the housing upon creating a vacuum in the housing by the means for creating a vacuum, a closable access opening in the exterior wall of the housing and directly communicating with the interior vacuum compartment, removable flow communicating closure insert means for insertion in the access opening for closing off the interior vacuum compartment from the exterior of the housing and for preventing direct flow communication through the access opening between the exterior of the housing and the interior vacuum compartment, exterior inlet means and interior outlet means contained on the closure insert means and disposed in flow communication with each other through the closure insert means, said inlet means being adapted for flow connection with an external vacuum extraction recovery hose and arranged for flow communicating the exterior of the housing with the flow aperture of the wall surface means through the closure insert means, the outlet means, and interior vacuum compartment, and spacing support means in the interior of the housing for maintaining the outlet means of the closure insert means in raised open flow relation to the bottom floor portion of the interior of the housing, whereby upon creating a vacuum by the means for creating a vacuum, a corresponding vacuum condition is constantly maintained in the interior vacuum compartment laterally remotely spaced therefrom and in turn at the inlet means for recovery in the assembly of vacuum extracted material entering through the inlet means.