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. 06, 2004
Filed:
Dec. 14, 2001
Bobst S.A., , CH;
Abstract
A device for stacking sheets delivered on a first conveyor in a plurality of parallel streams of overlapping sheets, includes a second conveyor moving slower than the first conveyor that compacts the streams as they exit the first conveyor; a third conveyor that receives the streams from the second conveyor; and a plurality of stackers, each aligned with one of the streams exiting the third conveyor, formed of endless belts positionable horizontally which cooperate with stop members to stack the incoming sheets. Completed stacks are then moved downstream on the belt. When sheets in a stream are determined to be defective; its belt for that stream is tilted, and the stream falls onto a fourth conveyor for disposal. A spacer introduces spacing into each stream to delineate portions of the streams which will form successive stacks, includes adjusting devices that lengthen and shorten the second and third conveyors, and a device selectively operable to stop passage of the streams from the second conveyor to the third conveyor. The adjusting devices are coupled to simultaneously lengthen one of the conveyors and to shorten the other conveyor. A drive mechanism for the third conveyor moves the third conveyor at the same speed as the second conveyor receiving the streams from the second conveyor, and faster than the second conveyor when delineated portions of the streams are being delivered to the stackers.