Cop made of plastic material

Details Cop made of plastic material Cop made of plastic material

1974-07-08

1976-05-25

Christian, Leonard D.

Winding, tensioning, or guiding

Bobbin or spool

Cop-tube type

2421187, B65H 7510, B65H 7512

Patent

active

039587762

ABSTRACT:
A disposable cop is disclosed, made of plastic material, and consisting essentially of a cropped cylindrical body, hollow inside, and having from 12 to 20 longitudinal reinforcing ribs disposed around the inside circumference, and arranged substantially radially at a uniform distance from each other and widened for a short distance in the section above their middle part, said longitudinal reinforcing ribs being:

REFERENCES:
patent: 2419415 (1947-04-01), Morf
patent: 3403872 (1968-10-01), Williams et al.
patent: 3454235 (1969-07-01), Hurley
patent: 3556423 (1971-01-01), Steffenini

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