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:
Aug. 06, 2002
Filed:
Mar. 31, 2000
Barry Mark Jackson, York, ME (US);
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Abstract
A signature slow down device is provided which includes an entrance nip mechanism for receiving a signature from an upstream device at a first signature transport velocity and reducing the transport velocity of the signature to a first reduced transport velocity; and an exit nip mechanism for receiving the signature from the entrance nip mechanism, and further reducing the transport velocity of the signature to a second reduced transport velocity. In accordance with the present invention, the respective signature contacting surfaces of the entrance and exit nip mechanisms are each defined by a pair of opposing non-circular rotating components. Each non-circular rotating component has a first surface portion for forming a nip with its opposing non-circular rotating component and a second surface portion for forming a gap with its opposing non-circular rotating component. In each of the entrance and exit nip mechanisms, the opposing non-circular rotating components rotate at a variable velocity profile in which the non-circular rotating components decelerate when the nip is formed, and accelerate with the gap is formed.