Tape cassette reel having an upper reel portion formed by dichro

Details Tape cassette reel having an upper reel portion formed by dichro Tape cassette reel having an upper reel portion formed by dichro

Filed on

1989-08-02

Date issued

1992-12-29

Examiner

Stodola, Daniel P.

Patent Class

Winding, tensioning, or guiding

SubClass

Coil holder or support

SubSubClass

Spool or core

Other Related Categories

B65H 7518

Type

Patent

Status

active

Patent number

051745208

Description

ABSTRACT:
A tape cassette reel having an upper flange portion and a lower flange portion formed as one body with a reel hub, in which the central portion of the upper flange portion is made of an opaque resin and a peripheral portion thereof is made of a transparent resin by a dichromatic molding process and a stepped portion is formed on a bonding surface between the central portion and the peripheral portion of the upper flange portion so as to increase a bonding strength of the bonding surface.

REFERENCES:
patent: 3410500 (1968-11-01), Elliott
patent: 3876073 (1975-04-01), Herbertko
patent: 4244535 (1981-01-01), Moodie
patent: 4452404 (1984-06-01), Gelardi et al.
patent: 4715558 (1987-12-01), Fair et al.
patent: 4752046 (1988-06-01), Wulfing
patent: 4773614 (1988-09-01), Makino et al.
patent: 4807826 (1989-02-01), Iwahashi

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