Manufacturing container or tube from paper; or other manufacturi – Bending – Folding
Patent
1985-01-11
1987-04-21
Schmidt, Frederick R.
Manufacturing container or tube from paper; or other manufacturi
Bending
Folding
493463, 493470, 493941, B31B 152
Patent
active
046593233
ABSTRACT:
A method and apparatus for making axial-flow filters wherein a sectorial-shaped sheet of filter material having corrugations therein parallel to the curved ends thereof is made from a flat sheet of filter material in the first step, and thereafter the corrugated sheet is made into an annulus to obtain the final product. In the first step, an edge portion of a flat sheet of filter material is attached to a sectorial-shaped mold, having a mold surface defined by curved ridges and valleys parallel to the curved ends of the mold, so that the sheet is slanted up away from the mold surface from the smaller curved end of the mold. Thereafter a set of curved forming blades is moved down toward the mold to engage the sheet and to fold it successively and consecutively across the ridges of the mold and beneath the edges of the blades into the valleys of the mold to corrugate the sheet. In the second step, the corrugated sheet thus produced is made into an annulus by using a contouring belt which embraces the larger convexly curved ends of the sheet and constricts the sheet into an annulus.
REFERENCES:
patent: 1989015 (1935-01-01), McKellip
patent: 2531555 (1950-11-01), Cummings et al.
patent: 2984160 (1961-05-01), Whelton et al.
patent: 4181070 (1980-01-01), Robbins et al.
patent: 4201119 (1980-05-01), Wolf
Ito Yuuji
Kondo Naohiko
Matuyama Harukazu
Ota Yukio
Sakai Masahiko
Nippondenso Co. Ltd.
Schmidt Frederick R.
Showalter Robert
LandOfFree
Method for making axial-flow filters and apparatus therefor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for making axial-flow filters and apparatus therefor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making axial-flow filters and apparatus therefor will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-748881