Patent ID: 7341631

Claim:
A delivery system comprising a nozzle assembly, the nozzle assembly capable of conveying, treating and spraying pieces of inorganic fibrous thermal and/or acoustical insulation while suspended in a stream of air and for attaching to an exit end of a blow hose, said nozzle assembly comprising a shredder section for converting some clumps, nodules and mixtures thereof of the inorganic fibrous insulation coming from a blowing machine and blow hose into pils such that at least 50 wt. percent of the pieces of inorganic fibrous insulation are in the form of pils, pieces whose bodies are about 0.2 inch and smaller with a majority of pils having a diameter of less than about 0.15 inch, and the nozzle assembly further comprising an accelerator section having a tapered portion for increasing the velocity of the stream of air suspended fibrous insulation comprising pils coming from the shredder section and for spraying the air suspended fibrous insulation into wall cavities to form in-wall thermal insulation.