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:
Sep. 20, 1988
Filed:
Jan. 03, 1984
Paul R Spencer, Meridian, ID (US);
Anthony C Palumbo, Jr, Rochester, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
An apparatus and method for separating doublets includes a device in which opposed surfaces that are connected to a vacuum source have a rippled portion in which vacuum slots are positioned at the apex of the ripples. There is a gradual transition in the surface of the slots from a planar portion to a rippled portion and back to a planar portion. The two surfaces are spaced a predetermined distance from each other such that when a double sheet of paper is driven through the rippled area, both the upper sheet and the lower sheet can tack to the upper and lower slots without having to jump across a gap. Subsequently, as the two sheets move into the area of the surfaces where there are no ripples, a strong separating force is generated as each sheet remains attached to the respective vacuum slots since the upper and lower slots are not in the same plane.