Patent ID: 11939093
Assignee: I.M.A. INDUSTRIA MACCHINE AUTOMATICHE S.P.A.
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 8:
9. The unit according to claim 1, and further comprising a plurality of the sealing grippers, wherein each sealing gripper of the sheet of over-wrapping material comprises a support projecting from a fixed plate and on which the sealing gripper is hinged so as to be positioned along the closed circular trajectory of the first and second gripping devices, and above the first and second gripping devices in passage; the support being connected to a connecting rod-crankshaft unit defining the movement elements, able to rotate the sealing gripper according to a closed elliptical trajectory to obtain the different gripping, sealing and release positions of the formed filter bag with the sheet of over-wrapping material.