Patent ID: 7048500

Claim:
A silencer comprising: (a) a first body section including a base, sidewall, and an upper wall; (i) the upper wall having a center region with a concave wall smoothly sloping downwardly terminating at the sidewall; (ii) the sidewall joining together the base and the upper wall; (iii) the base, sidewall, and upper wall together forming a first body section interior volume; (iv) a first region of packing material contained within a protective film being within the interior volume and pressed against the base, sidewall, and upper wall; (v) the base, sidewall, and upper wall comprising steel; (b) a second body section having a second body section base, outer sidewall, inner sidewall, and upper wall; (i) the second body section base, outer sidewall, inner sidewall, and upper wall together defining a second body section interior volume; (ii) the second body section having a center aperture, with the inner sidewall lining the center aperture; (iii) a second region of packing material contained within a protective film being within the second body section interior volume; (c) a frame arrangement including an outer tubular housing with an inner volume; (i) the second body section being secured to the frame arrangement with the outer tubular housing extending through the second body section center aperture; (ii) the first body section being oriented relative to the frame arrangement such that the center region of the upper wall extends into the inner volume of the outer tubular housing; and (iii) the upper wall of the first body section and the second body section inner sidewall and the second body section base together defining a gas flow path from the inner volume of the tubular housing; (d) a fan supported by the center region of the upper wall; the fan being within the inner volume of the tubular housing; and (e) a hopper including a plurality of chambers surrounding the fan; the chambers having a region of packing material therein.