Apparatus and method for forming spiral pleated filter cartridge

Manufacturing container or tube from paper; or other manufacturi – Assembling or disassembling of distinct members – Comprising bringing two members together

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Details

493451, 493409, 493941, 2104934, B31D 504

Patent

active

058822887

ABSTRACT:
A method is disclosed for forming a filter cartridge which includes the steps of providing a cylindrical filter element having a plurality of radially extending longitudinal pleats, engaging an outer periphery of the cylindrical filter element along a substantial portion of the length thereof, and simultaneously moving the plurality of radially extending longitudinal pleats into a laid-over spiraled configuration along the entire length of the cylindrical filter element to form a spiral pleated filter element. An apparatus is also disclosed for effectuating the disclosed method.

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PCT International Search Report dated 5 Jun. 1998 with Annex.

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