Cassette reel spring having rolled edges

Details Cassette reel spring having rolled edges Cassette reel spring having rolled edges

1989-01-25

1990-02-27

Jillions, John M.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

360132, G11B 23087

Patent

active

049039164

ABSTRACT:
A reel spring for a magnetic tape cassette is formed from a thin, elongated strip of stainless steel. The side edges of the strip are folded over by stamping or rolling to form longitudinal stiffeners. The stiffeners effectively increase the thickness of the strip at the edges, allowing the use of less expensive raw material without sacrificing functionality.

REFERENCES:
patent: 4662579 (1987-05-01), Gelardi et al.
patent: 4709290 (1987-11-01), Schoettle et al.

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