Process of fabrication of drum bodies having rolling hoops and t

Details Process of fabrication of drum bodies having rolling hoops and t Process of fabrication of drum bodies having rolling hoops and t

1987-07-27

1988-11-01

Pollard, Steven M.

Receptacles

Outlet or junction box type

Sectional receptacle

220 5R, 220DIG1, B65D 5126

Patent

active

047813016

ABSTRACT:
The present invention relates to a process of fabrication of drum bodies having rolling hoops, and the drum bodies so produced. The drum body is provided with a plurality of corrugations generally offset towards the center of the drum with the peaks of the corrugations in line with the undeformed part of the drum. At least one of the peaks of the corrugations is then expanded radially outwardly to make a rolling hoop.

REFERENCES:
patent: 1643252 (1927-09-01), McCresy
patent: 1649292 (1927-11-01), Draper
patent: 3198374 (1965-08-01), Lindner et al.
patent: 3472418 (1969-10-01), Ullman
patent: 3949877 (1976-04-01), Santoni
patent: 4264017 (1981-04-01), Karas et al.
patent: 4538439 (1985-09-01), Frei

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