Cylinder folder
Patent 4082259 Issued on April 4, 1978. Estimated Expiration Date: 
April 4, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 4, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3250528 Zig-zag web folder apparatus Patent #: 3991994 InventorAssigneeApplicationNo. 748764 filed on 12/08/1976US Classes:493/430, For zigzag folding493/433, For zigzag folding493/450By direct application of vacuum or fluidExaminersPrimary: Burr, Edgar S.Assistant: Heinz, A. J. Attorney, Agent or FirmInternational ClassB65H 045/16AbstractIn a cylinder folder for zig-zag folding a flexible web, air moves through openings in the walls of both cylinders to equalize and relieve pressure in the region between the web and the cylinders where the web is separated from the cylinders and laid down on the zig-zag stack. The air moves through the cylinder wall openings from the hollow cylinder interiors, which communicate with the ambient atmosphere through openings in the end walls of the cylinders. | |
