Tape cassette

Details Tape cassette Tape cassette

1987-01-12

1988-09-27

Petrakes, John

Winding, tensioning, or guiding

Strand tensioning device

Tortuous course

G03B 104

Patent

active

047736143

ABSTRACT:
A tape cassette comprising upper and lower halves secured to each other to define a space containing a pair of tape reels. The upper half is formed in its upper surface with a depression. The upper half is provided with a window opening above one of the tape reels. A transparent window plate is provided on the upper half. The window plate is made through a molding process using a gate to spout a fused transparent synthetic resin into a molding cavity. The transparent window plate has a first portion covering the window opening and a second portion extending a substantial length from the first portion over the depression. The window plate second portion has a gate mark made thereon after the molding process. The gate mark is hidden under a label stuck on the depression.

REFERENCES:
patent: 3565367 (1971-02-01), Yamamoto
patent: 3704841 (1972-12-01), Brown
patent: 3873045 (1975-03-01), Nemoto
patent: 4063370 (1977-12-01), Saito
patent: 4501359 (1985-02-01), Yoshizawa
patent: 4501396 (1985-02-01), Tomsyck et al.
patent: 4566653 (1986-01-01), Bettinger et al.
patent: 4646916 (1987-03-01), Ishida

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