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:
Jan. 02, 2001
Filed:
Oct. 22, 1998
BDT Buro-und Datentechnik, GmbH & Co. KG, Rottweil, DE;
Abstract
The task of the invention comprises reliably acquiring documents from an output device with variable output speed without impermissible tractive forces being exerted onto the documents. For this purpose the rotational speed of the transport system of the acquisition unit is determined under no-load condition and the torque of the drive is reduced, for example by current imitation, until the transport rate of the acquisition unit is just above the maximum occurring transport rate of the output device. The torque value thus determined, which represents the torque requirement for overcoming the friction of the system, is stored and set as the nominal value during the document acquisition. As a drive motor can be used DC current motors as well as also load-controlled electronically commutated motors.