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:
Sep. 17, 1996
Filed:
Jul. 23, 1993
Dennis A Knaus, Philadelphia, PA (US);
Other;
Abstract
A method and apparatus for the preparation of a wound roll of a web of material is provided. The apparatus utilizes a surface windup device for automatically introducing a core onto a primary lay-on roll, and automatically cuts the web so that it can be attached around a new core. A primary lay-on roll feeds the web of material onto the rotating core. The core is driven by a secondary lay-on roll. The differential in speed between the primary and secondary lay-on rolls controls the tension of the web as it is wound. This invention also incorporates a retractable cutting roll and knife assembly that moves into position to cut the web of material, assists in transferring the web of material to a new core, and then retracts to a position that does not hinder winding the new roll of wound material. The winder is also equipped with an apparatus that ejects the wound roll from the hold-down clamps as a new roll is automatically started.