Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1985-04-04
1991-06-11
Severin, David J.
Dynamic magnetic information storage or retrieval
Record medium
In container
G11B 23087
Patent
active
050237403
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE ART
The present invention relates to a tape cassette best suited for a recording and/or reproducing apparatus such as, for example, a video tape recorder, and particularly, to such a tape cassette as comprises a cassette housing which passes a tape housed therein along an opening in the front surface thereof, a front cover pivotally attached to the cassette housing for covering the front side of the passed tape, a rear cover pivotally attached to the front cover for covering the rear side of the passed tape, a pin to be guided and provided on the rear cover, and a guide groove provided on the cassette housing for guiding the guided pin so as to have the lower end portion of the rear cover separated backwardly from the front cover when the front cover is rotated in its opening direction, so that the rear cover is rotated with respect to the front cover in its opening direction.
BACKGROUND OF THE ART
The conventional tape cassette of this sort for a video tape recorder is constituted as shown in FIGS. 1 to 3.
Firstly, as illustrated in FIG. 1, a cassette housing 3 having an upper half 1 and a lower half 2, a front cover 4 and a rear cover 5 are made of synthetic resin. A magnetic tape 8 is wound around a pair of right and left reels 6 and 7 and accommodated in the upper and lower haves 1 and 2. These halves 1 and 2 are fitted in each other and joined by a pair of screws (not shown) to form the cassette housing 3.
Disposed in the fore part of the cassette housing 3 is a front opening 10 which extends in the right to left direction over the total length of the cassette housing 3. A pair of tape guides 11 are provided within the cassette housing 3 near the respective right and left ends of the front opening 10 and formed integrally with this cassette housing 3. The magnetic tape 8 is guided by this pair of tape guides 11 and passed along the front opening 10 as shown in FIG. 2.
The cassette housing 3 has a U-shaped recess formed between the pair of tape guides 11 and inwardly of the front opening 10. This recess 12 is separated from a portion of the cassette housing 3 where the reels 6 and 7 are accommodated by a U-shaped partition wall 13 formed integrally with the cassette housing 3, and opened at its top and bottom sides.
The front cover 4 is almost of U-shape and has integrally a pair of pivots 15 projected inwardly from their respective right and left end portions 4a thereof and aligned with each other. And as shown in FIG. 2, the pair of pivots 15 are respectively inserted in a pair of insertion holes 16 which are formed in the fore parts of the right and left side walls 3a of the cassette housing 3 and the axes of which are aligned with each other, so that the front cover 4 can be swung on the pivots 15 so as to cover the front side of the magnetic tape 8 passed along the front opening 10.
The rear cover 5 has integrally a top cover 17 on its upper edge as shown in FIG. 1 and a pair of pivots 18 which are so located almost at the centers of their right and left ends in the vertical direction thereof as to be aligned with each other. And as shown in FIG. 2, the rear cover 5 is arranged in parallel with the front cover 4 within the recess 12 so as to cover the rear side of the magnetic tape 8 passed along the front opening 10.
The pair of pivots 18 are inserted in respective insertion holes 20 provided in a pair of projecting pieces 19, which are so formed integrally with the front cover 4 and near the right and left end poritons 4a of the front cover 4 as to project from the back of the front cover 4 as shown in FIGS. 1 and 2, so that the rear cover 5 can be rotated on the pivots 18. The top cover 17 is arranged to cover the recess 12 in as illustrated in FIG. 2.
The right and left end portions 13a of the partition wall 13 are opposed to each other as shown in FIGS. 1 and 2. Disposed on the opposed faces of the right and left end portions 13a are a pair of guide grooves 21 which are of gentle S-shapes and opened at their upper ends.
A pair of projecting pieces 22 are projected backwardly
REFERENCES:
patent: 4418373 (1983-11-01), Fujimori et al.
patent: 4449677 (1984-05-01), Ohta et al.
patent: 4897751 (1990-01-01), Goto
Eslinger Lewis H.
Severin David J.
Tsuchiya Patent Office
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