Videotape cassette

Details Videotape cassette Videotape cassette

1994-09-27

1996-05-14

Darling, John P.

Winding, tensioning, or guiding

Unwinding and rewinding a machine convertible information...

Cartridge system

242347, G11B 23087

Patent

active

055160565

ABSTRACT:
The upper cassette casing of a videotape cassette comprises a base panel and peripheral walls vertically extending from corresponding edges thereof. The base panel is provided with a first section which carries a pressure spring adapted to depress the tape reels toward the lower cassette casing, and a second section surrounding the first section, the second section having a thickness less than that of the first section. Each of the peripheral walls includes a plurality of reinforcement ribs which inwardly protrude therefrom, and is of a substantially same thickness with respect to each other and as that of the second section of the base panel. The thickness of the second section of the base panel and the peripheral walls is as thin as 50 percent of that of the first section.

REFERENCES:
patent: 4665456 (1987-05-01), Ahlberg et al.
patent: 4831482 (1989-05-01), Sato
patent: 5181153 (1993-01-01), Nishimura
patent: 5184255 (1993-02-01), Lowry et al.
patent: 5189583 (1993-02-01), Okamura et al.
patent: 5201476 (1993-04-01), Gelardi et al.
patent: 5398147 (1995-03-01), Johanson
patent: 5411219 (1995-05-01), Yi et al.

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