Method of assembling plastic filter element with plastic casing

Details Method of assembling plastic filter element with plastic casing Method of assembling plastic filter element with plastic casing

2005-03-08

2005-03-08

Drodge, Joseph (Department: 1723)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C029S525000, C055S492000, C055S521000, C156S073100, C156S218000, C210S232000, C210S457000, C210S493100, C210S497300, C264S405000

Reexamination Certificate

active

06863758

ABSTRACT:
A method of assembling a filter element includes the initial step of forming a plastic filter casing with openings from a flat blank with opposite ends thereof bent towards one another and joining these opposite ends together by a sealing seam. Also, a resilient mat filter is folded into a cylindrical shape and pushed open on a fluid-permeable supporting pipe to surround and engage the surrounding pipe. The cylindrical shape of the mat filter has an exterior diameter prior to introduction into the casing that is larger than an interior diameter of the filter casing along the entire axial length of the mat filter. The mat folder is folded into a conical shape to facilitate its introduction thereof into the filter casing. After the axial end is formed, the mat filter and supporting pipe are introduced into the filter casing to define a filter chamber. Finally, two end caps are joined to the filter casing.

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