Patent ID: 6505664
Filing Date: 2003-01-14
Classification: B26D,B29C,B65B,Y10T

Abstract:
A rotary mechanism comprising a pair of rotors and respective carriers on which said rotors are mounted for counter-rotation about parallel axes lying in a plane,each rotor having a plurality of radially outer faces equally angularly spaced about the axis of rotation of said rotor, at least one of cutting and sealing means on said outer faces of the rotors to cut and/or seal web material engaged between said outer faces of the pair of rotors, supporting means for displaceably supporting one of the carriers and biasing means acting to displace said one carrier for urging said outer faces into engagement, means being provided to limit the displacement of said one carrier by said biasing means, said biasing means bearing on said one carrier at a location substantially coincident with said plane of the axes of the two rotors, and the displacement limiting means comprising at least one stop element also substantially coincident with said plane of the rotor axes wherein said carrier has an axis of pivoting displaceability lying in or adjacent to a plane through the rotor axis in said one carrier and extending normal to said plane of the axes of said pair of rotors.