Patent ID: 7231947

Claim:
A bulk material handling system comprising: means for holding said bulk material; means for supporting a container having an access spout; means for pneumatically conveying said bulk material; means for dispensing said bulk material from said holding means into said pneumatically conveying means; and an apparatus including a housing having a portion thereof insertable into the spout of said container and a first opening communicating with the interior of said container when said container is disposed on said supporting means, means mounted on said housing portion and selectively operable to engage said spout when said housing portion is inserted into said spout for forming a seal between said housing portion and said spout, a second opening through which a discharge end of said pneumatically conveying means may be inserted to communicate with the interior of said container when said container is disposed on said supporting means and said housing portion is inserted into said spout, a partition formed of a filter medium disposable between a portion of said housing and said discharge end of said pneumatically conveying means when said discharge end is inserted through said second housing opening providing a first closed chamber and a second chamber communicating with said first housing opening, and an outlet communicating with said closed chamber.