07381175 is referenced by 14 patents and cites 18 patents.

Machinery and process for continuously making a compound filter rod include a tow transport for continuously delivering an expanded fiber tow while compressing the tow as it travels in a downstream direction. At least one rotating pocket wheel has a plurality of spaced apart pockets therein, and a filter media supply delivers media to the pockets. A vacuum source applied to the pockets of the rotating wheel operates to draw filter media into the pockets from the filter media supply. An air transport tube in alignment with the pockets of the rotating pocket wheel discharges the filter media from the pockets as they rotate past the transport tube. The discharged filter media is delivered to the tow transport into interior portions of the fiber tow. Subsequently, the rod is wrapped with filter paper.

Title
Compound filter rod making apparatus and process
Application Number
11/19786
Publication Number
7381175 (B2)
Application Date
December 22, 2004
Publication Date
June 3, 2008
Inventor
Charles Gary Atwell
Richmond
VA, US
Rashard Thurman
Richmond
VA, US
Travis Garthaffner
Chesterfield
VA, US
Loren Duvoket
Goochland
VA, US
John Dawson
Richmond
VA, US
Agent
Connolly Bove Lodge & Hutz
Assignee
Philip Morris USA
VA, US
IPC
B65B 1/24
B65B 1/26
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