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:
Jun. 22, 1976
Filed:
Jan. 13, 1975
Reginald T Lamb, Los Altos, CA (US);
Other;
Abstract
A sheet-feeding apparatus for separating and feeding sheets of paper, cardboard, metallic and plastic material and the like individually from a stack of such sheets is described. The apparatus as described is provided with a curved sheet-receiving chute for containing and temporarily storing a stack of sheets. A chamber having an apertured movable wall is provided adjacent the stack of sheets. The movable wall is positioned and freely movable to contact the top sheet of the stack. A low-pressure blower is provided for evacuating air from the chamber and drawing the top sheet into sealing contact with the movable wall about the aperture. Sealing of the aperture creates a partial differential pressure which moves the wall, reducing the volume of the chamber and removing the top sheet from the stack. Means, such as a roller, is also provided within the chamber. The roller extends slightly through the aperture to contact the sheet once the sheet is removed from the stack. Thereafter and upon command, the roller is moved for translating the sheet longitudinally and transversely and thus aligning and positioning the sheet for subsequent pickup and removal from the apparatus. When the sheet is removed from the apparatus, the aperture in the movable wall is opened and the wall falls automatically to pick up the next sheet.