Pleating apparatuses

Details Pleating apparatuses Pleating apparatuses

2008-01-15

2008-01-15

Desai, Hemant M. (Department: 3721)

Manufacturing container or tube from paper; or other manufacturi

Bending

Folding

C493S407000, C493S433000, C493S941000

Reexamination Certificate

active

07318800

ABSTRACT:
A pleating apparatus comprises a support surface, first and second pleating surfaces, and a driver for compressing a portion of a filter material between the first and second pleating surfaces to form a pleat, where at least one of the pleating surfaces is curved or extends at an acute angle with respect to a support surface.

REFERENCES:
patent: 1613983 (1927-01-01), Collins
patent: 2495130 (1950-01-01), Pilliner
patent: 2677993 (1954-05-01), Ens
patent: 2915997 (1959-12-01), Seaman
patent: 2962991 (1960-12-01), Burgert
patent: 4519531 (1985-05-01), Clerici
patent: 4650102 (1987-03-01), Arbetter
patent: 4793051 (1988-12-01), Golden et al.
patent: 5064598 (1991-11-01), Seiler
patent: 5702552 (1997-12-01), Kutchmarek et al.

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