Folded-three-dimensional object, particularly a filter element

Details Folded-three-dimensional object, particularly a filter element Folded-three-dimensional object, particularly a filter element

2006-06-06

2006-06-06

Huynh, Louis (Department: 3721)

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

C493S966000, C428S182000

Reexamination Certificate

active

07056271

ABSTRACT:
A three-dimensional object folded from a flat work piece, particularly a filter element folded from a nonwoven fabric, characterized in that the three-dimensional object (20) is made up of several rows (5, 6, 7) of hollow pyramid elements (30) that are joined in rows and nested into one another.

REFERENCES:
patent: 2556521 (1951-06-01), Chase
patent: 2897971 (1959-08-01), Gewiss
patent: 2922239 (1960-01-01), Glynn
patent: 3302321 (1967-02-01), Walker
patent: 3894352 (1975-07-01), Hooker
patent: 6309438 (2001-10-01), Kanno et al.
patent: 44 35 532 (1996-11-01), None

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