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. 18, 2003
Filed:
Nov. 13, 2001
Applicant:
Inventor:
Sylvain Demers, St. Louis de France, CA;
Assignee:
Voith Paper Patent GmbH, Heidenheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H 2/000 ;
U.S. Cl.
CPC ...
B65H 2/000 ;
Abstract
A vacuum belt conveyor includes an air-pervious endless belt, a first pulley positioned at the upstream end of the conveyor and a second pulley positioned at the downstream end of the conveyor, the pulleys guiding the belt when the belt is traveling. The endless belt comes into contact with a plate having openings which are connected to a source of negative pressure. The belt, in the area of the upstream end of the conveyor, is in contact with a curved and perforated guiding surface, with the perforations, being connected to a source of negative pressure.