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. 07, 1977
Filed:
Nov. 21, 1975
George Holger Sundin, Duluth, MN (US);
Conwed Corporation, St. Paul, MN (US);
Abstract
A method and apparatus for stacking in precise alignment relatively large, flat, lightweight and flexible objects such as low density felted, fiber pads are disclosed. The disclosed method comprises the steps of feeding the pads towards the stack, rotating the leading edge of a pad to be stacked approximately 180.degree. to place the leading edge of the pad at the top of the stack in a position reversed top-bottom due to the rotation, and causing the remaining portion of the pad to follow in the position reversal along the top of the stack. The disclosed apparatus comprises at least one wheel with clips thereon for receiving and securing the leading edge of the pad, means such as an electric motor for rotating the wheel, means such as a slotted planar guide for disengaging the leading edge of the pad from the at least one wheel in precise alignment at the top of the stack as the at least one wheel rotates through the slots, and means such as air pressure directed against the pad remainder to cause it to take its place along the top of the stack. More than one pad may be stacked simultaneously according to the invention.