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:
Nov. 27, 2001
Filed:
Dec. 09, 1998
Charles Henry Dufour, Durham, NH (US);
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Abstract
The present invention is generally directed to providing a method and apparatus for accurately and efficiently folding a flat product (e.g., a web of paper or signatures obtained therefrom) during its delivery. Exemplary embodiments provide a single device for performing the two functions of folding and decelerating flat products. Rotatable seizing elements of a deceleration drum interface with any known folding cylinder having a known tucker blade assembly. As such, the accurate and mark-free folding of a conventional jaw folder can be achieved with any desirable paging, including the wide maximum paging range typically associated with rotary tucker blade folders. A deceleration drum according to the present invention can interface with any folding cylinder having a tucker blade assembly used to create a cross-fold, and can thereby replace any conventional combination of a folder (e.g., rotary tucker blade folder or jaw folder) and associated downstream deceleration device. Seizing devices associated with the deceleration drum create a fold off of a fixed (e.g., a non-retractable) or a retractable tucker blade of the folding cylinder, each seizing element acting as a jaw which removes the signature, and creates the fold during product deceleration and delivery.