Magnetic tape reel

Details Magnetic tape reel Magnetic tape reel

1985-10-30

1987-05-12

Jillions, John M.

Winding, tensioning, or guiding

Coil holder or support

Spool or core

242 685, B65H 7518

Patent

active

046643281

ABSTRACT:
A tape reel for a magnetic tape cassette having an improved circularity of the tape winding cylinder wall and which is more durable than conventional reels. The reel includes an inner cylinder having pawls which engage with a rotating shaft, an outer cylinder provided outside the inner cylinder and coaxial therewith to provide a tape winding cylinder, a plurality of reinforcing ribs extending between the inner and outer cylinders, an intermediate cylinder crossing the reinforcing ribs, and a plurality of intermediate ribs connecting the outer cylinder and the intermediate cylinder in such a manner that at least one intermediate rib is disposed between adjacent reinforcing ribs. The reel may be molded from polyacetal plastic resin without substantial deformation in the molding process, while simultaneously attaining an improved wear resistance.

REFERENCES:
patent: 4083508 (1978-04-01), Pattillo
patent: 4083509 (1978-04-01), Vasudeva et al.
patent: 4088278 (1978-05-01), Adair
patent: 4327879 (1982-05-01), Tanny

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