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:
Feb. 12, 2008
Filed:
May. 20, 2003
Murray Edward Bruce Leighton, Yorkshire, GB;
Murray Edward Bruce Leighton, Yorkshire, GB;
Illinois Tool Works Inc., Glenview, IL (US);
Abstract
The apparatus applies a transverse zipper strip to a film () moving continuously in a direction (). A continuous belt () is driven by sprocket wheels () and carries upper seal bars () which receive pre-cut lengths of zipper at station (). The pre-cut lengths are attached to the film () by a lower seal bar () which moves towards the film () at position A when an upper seal bar carrying a zipper strip is located directly above the film. Sealing takes place as the upper and lower seal bars move at the same speed as the film () from position A to position B where the zipper is released from the upper seal bar (). The process then repeats for the next zipper strip length.