Patent ID: 7614205
Filing Date: 2009-11-10
Classification: B65B

Abstract:
1. A unit for feeding infusion material to a machine producing packs made from filter material wherein the machine comprises: a production line for such packs including a conveyor having modular elements, each modular element having a recess, wherein the modular elements move in a specified feed direction and carry a filter material, and wherein the recesses form impressions in the filter material; at least one rotary feeder comprising a hollow and tubular container positioned transversely across the feed direction at a fixed distance from the conveyor of the production line, and a feed screw rotating inside the tubular container for feeding an amount or dose of infusion material into the impressions; at least one rotary precompactor acting together with the at least one rotary feeder to distribute the doses uniformly inside the impressions, said at least one rotary precompactor rotating around an exterior surface of the tubular container of the at least one rotary feeder and sliding on the exterior surface of the tubular container of the at least one rotary feeder towards and away from an operating position where the precompactor is in contact with at least one of the doses already inside one of the impressions.