Manufacturing container or tube from paper; or other manufacturi – Bending – Corrugating
Patent
1987-07-31
1989-05-30
Schmidt, Frederick R.
Manufacturing container or tube from paper; or other manufacturi
Bending
Corrugating
493456, 493457, 493470, 493941, 264324, B31F 120
Patent
active
048347000
ABSTRACT:
A ring-shaped corrugated filter element blank having radially alternate peak and valley folds is placed on a first mold having as many first concentric projections as the number of the peak folds of the ring-shaped blank and as many first concentric grooves as the number of the valley folds of the ring-shaped blank, with the peak folds fitted respectively over the first projections and the valley folds fitted respectively in the first grooves. Then, the ring-shaped blank is pressed between the first mold and a second mold, the second mold having second projections lying along concentric lines fitting respectively in the first grooves with the valley folds received therein, and second concentric grooves receiving respectively the first projections with the peak folds fitted thereover. The ring-shaped blank is heated while it is being pressed between the first and second molds, thereby forming a ring-shaped filter element. Thereafter, the ring-shaped filter element is cooled.
REFERENCES:
patent: 1989015 (1935-01-01), McKellip
patent: 2531555 (1950-11-01), Cummings et al.
patent: 4098177 (1978-07-01), Olney et al.
patent: 4246223 (1981-01-01), Patterson
patent: 4502315 (1985-03-01), Dubrovsky et al.
patent: 4718884 (1988-01-01), Iwase et al.
Hanai Mineo
Ito Yuji
Iwase Takatoshi
Kondo Naohiko
Miyagawa Yoshiaki
Nippondenso Co. Ltd.
Schmidt Frederick R.
Showalter Robert
LandOfFree
Method of and apparatus for forming filter element 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 of and apparatus for forming filter element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of and apparatus for forming filter element will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2149346