Method and apparatus for forming pleated closure construction

Details Method and apparatus for forming pleated closure construction Method and apparatus for forming pleated closure construction

1975-11-10

1978-04-18

Coan, James F.

93 1D, 93 60, B31F 100

Patent

active

040844889

ABSTRACT:
A closure member constructed from a single flat blank and having an annular flange extending from a flat central portion, the outer surface of the annular flange being substantially continuous, is provided by forming a plurality of pleats running generally perpendicular to the perimeter of the flange andprojecting toward the inside of the annular flange.

REFERENCES:
patent: 783889 (1905-02-01), Perkins et al.
patent: 2180243 (1939-11-01), Kniesche
patent: 2411082 (1946-11-01), Conti
patent: 2699274 (1955-01-01), De Villers
patent: 2832522 (1958-04-01), Schlanger
patent: 3054144 (1962-09-01), Goodwin et al.
patent: 3344580 (1967-10-01), Griner
patent: 3408902 (1968-11-01), DeVoe
patent: 3550421 (1970-12-01), Stakel

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