Napkin folder
Patent 4865579 Issued on September 12, 1989. Estimated Expiration Date: 
May 19, 2008. 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.
May 19, 2008. 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 797864 1806125 1809000 3658818 Machine for making longitudinal and transverse folds in fabric Manually operable folding guide Apparatus for folding a foldable sheet Folding apparatus and method Patent #: 4648861 InventorsApplicationNo. 07/195789 filed on 05/19/1988US Classes:493/458, Sequential, diverse folds493/405, Folding493/937, TEXTILE493/960TOILET ARTICLEExaminersPrimary: Schmidt, Frederick R.Assistant: Showalter, Robert Attorney, Agent or FirmInternational ClassesB31D 1/00 (20060101)B31D 1/04 (20060101) B65H 45/00 (20060101) B65H 45/04 (20060101) AbstractA sheet folding apparatus comprises a substantially planar surface for receiving and supporting a substantially rectangular extended sheet. The apparatus includes a first folder for folding the substantially rectangular extended sheet along a first diagonal axis thereof to form a once folded sheet defining a long base, a second folder for folding the two halves of the base of the once folded sheet towards each other and into parallel disposition with an axis transverse to the axis of the base to form a twice folded sheet, and a third folder for folding the two halves of the twice folded sheet along a second diagonal axis thereof to form a thrice folded sheet while simultaneously removing the sheet from the substantially planar surface. | |
