Method for manufacturing a tape guide cylinder of small thicknes

Details Method for manufacturing a tape guide cylinder of small thicknes Method for manufacturing a tape guide cylinder of small thicknes

1988-10-17

1990-02-27

Larson, Lowell A.

Advancing material of indeterminate length

By orbitally traveling material-engaging surface

Including details of roll or mount

72333, 72348, B65H 2308

Patent

active

049038788

ABSTRACT:
A method for manufacturing a tape guide cylinder of small thickness from metal sheet by combination of drawing processing technique, flange processing technique, piercing technique, trimming technique, curling technique and optionally burring technique of metal working processing is disclosed. The tape guide cylinder produced has flange-like inward portions or inwardly bent portions at both ends of the cylinder which fit on cylinder attaching shaft of a cassette case, respectively. Therefore, the inward portions or inwardly bent portions contribute the reduction of the thickness of the cylinder body and thus the reduction of the material used for the production of a tape guide cylinder.

REFERENCES:
patent: 802824 (1905-10-01), Parker
patent: 4754908 (1988-07-01), Tanaka et al.

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