Self-locking hub assembly for a compact audio tape cassette and

Details Self-locking hub assembly for a compact audio tape cassette and Self-locking hub assembly for a compact audio tape cassette and

1987-01-06

1988-04-12

Levy, Stuart S.

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

G11B 2304

Patent

active

047369035

ABSTRACT:
An internal, self-locking hub assembly for a compact, audio, tape cassette is described, including a locking member with at least one movable portion and a spring. The cassette includes at least one receptacle formed in the raised annular rings thereof. The spring normally forces the movable portion radially inward in a direction parallel to the plane of the hub, wherein the movable portion engages the at least one receptacle in the raised annular ring, and locks the hub against rotation. On the other hand, when the tape cassette is placed into a tape player/recorder, the spindle thereof enters the center of the hub, abuts and moves the at least one movable portion radially outward against the force of the spring, thereby unlocking the at least one movable portion from the at least one receptacle and permitting normal rotation of the hub. A related method includes the steps of: forming the locking member to include at least one movable portion, a spring and a locating member; picking up the locking member; forming a hub to include a mounting member corresponding to the locating member; advancing the locking member to the hub; inserting the locking member into the hub such that the locating member is fixedly received by the mounting member; mounting the hub into a cassette base; forming a cassette cover to include the at least one receptacle; and positioning the cassette cover on the base, such that the at least one receptacle receives the at least one movable portion.

REFERENCES:
patent: 3066880 (1962-12-01), Bauer
patent: 3104843 (1963-09-01), Missriegler et al.
patent: 3105645 (1963-10-01), Rost
patent: 3245629 (1966-04-01), Rost
patent: 3401899 (1968-09-01), Goldberg
patent: 3801042 (1974-04-01), Dobson
patent: 4033523 (1977-07-01), Roman
patent: 4515331 (1985-05-01), Stumpfi et al.
patent: 4541587 (1985-09-01), Stumpfi et al.
patent: 4585187 (1986-04-01), Okamura et al.

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