The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2008
Filed:
Jul. 15, 2004
Rodolfo Caroli, Imola, IT;
Rodolfo Caroli, Imola, IT;
I.M.A. Industria Macchine Automatiche S.p.A., Bologna, IT;
Abstract
A unit for sealing filter bags for products for infusion comprises at least: a shaped revolving roller () with circumferential and radial tracks () that act as guides to make longitudinal and transversal contact seals on a web () of filter paper folded onto itself and moving under the roller (), using sealing sonotrode means () arranged in sealing position under the roller () and close to the moving web () in such a way as to form) a tubular web of filter paper with a succession of substantially flattened filter bags formed on it; the sealing sonotrode means () being operated upon by fluid-driven means () designed to control, through appropriate means (), the variable constituted) by the contact force and/or the distance between the sealing means () and the roller ().