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:
Jul. 06, 1999
Filed:
Aug. 29, 1997
Bobby Chang, West Lake Village, CA (US);
R. R. Donnelley & Sons Company, Chicago, IL (US);
Abstract
A bindery gathering chain and conveyor apparatus with a first and second idling sprocket mounted in fixed relation to one another to define first and second fixed reference points and an endless conveyor chain which rides on the first and second idling sprockets and a moveable support located relative to the first and second fixed reference points. A third sprocket is attached to the moveable support and also has the endless conveyor chain riding on it. There is an actuator moving the moveable support and the third sprocket to apply a first force to the moveable support for a high chain-tensioning mode of operation during start or stop for a predetermined period and also to move the moveable support and the third sprocket to provide a second, lower force for a lower chain-tensioning mode of operation during other operating modes.