Electric heating – Metal heating – Of cylinders
Patent
1978-10-25
1981-01-20
Envall, Jr., Roy N.
Electric heating
Metal heating
Of cylinders
219 1071, 219 1073, 219 1049R, 156380, 156 69, B23K 1302, H05B 610
Patent
active
042464617
ABSTRACT:
Apparatus for welding items which are each made from a plurality of substantially plastic components operate to maintain the components in fixed positions relative to each other while moving them along a feed path, including welding and cooling stages.
REFERENCES:
patent: 2575381 (1951-11-01), Colby
patent: 2920173 (1960-01-01), Wastberg
patent: 3057988 (1962-10-01), Roder
patent: 3185810 (1965-05-01), Peschel et al.
patent: 3426564 (1969-02-01), Jansen et al.
patent: 3748207 (1973-07-01), Campbell et al.
patent: 4075820 (1978-02-01), Standley
patent: 4095390 (1978-06-01), Knudsen
patent: 4152566 (1979-05-01), Magerle
AB Akerlund & Rausing
Envall Jr. Roy N.
Leung Philip H.
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