Patent ID: 6669410
Filing Date: 2003-12-30
Classification: B65G

Abstract:
A transfer device comprising:a housing; a pocketed rotor containing a plurality of through going pockets, said rotor rotatable about a given axis of rotation and said pockets having opposite end openings which function as both inlets and outlets depending upon the angular position of the rotor; a housing enclosing said rotor, said housing having an exterior periphery and first through fourth ports disposed around the exterior periphery thereof for registry with the inlets to and outlets from said through going pockets; said rotor mounted in said housing for rotation with respect to said ports about said given axis of rotation; and said pockets each having a flow restriction region, the flow restriction region has a larger cross-sectional area than do other regions of the pocket; inserts placed in the pockets at the flow restriction region, said inserts filling a peripheral volume of the flow restriction region to substantially reduce the cross-section area of the flow restriction region.