B - Operations – Transporting – 31 – D
Patent
B - Operations, Transporting
31
D
93/75
B31D 5/00 (2006.01)
Patent
CA 1267019
ABSTRACT An apparatus and method for forming an axial flow filter element. The filter element is made of fan shaped sheet having a plurality of wavying portions. Such fan shaped sheet is held by holding wedges in such a manner that a plurality of holding wedges are inserted into inner surface of a plurality of valleys of the wavy portions, then the sheet is reduced in radial length by reducing the pitch between the adjacent holding wedges. After the sheet is reduced in radial length, the sheet is rounded in order to widen the central angle of the fan shaped sheet as much as 180° by forcing the fan shaped sheet toward the central portion thereof. The rounded sheet, then, is reformed in its circular shape by sliding a reforming wedge along with a predetermined circular trail.
515669
Hakamada Kouhei
Iwase Takatoshi
Borden Ladner Gervais Llp
Nippondenso Co. Ltd.
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