Tape cassette with erasure prevention recesses at rear corners

Details Tape cassette with erasure prevention recesses at rear corners Tape cassette with erasure prevention recesses at rear corners

1974-12-30

1976-02-24

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record medium

In container

360 60, G11B 2304, G11B 1504

Patent

active

039407993

ABSTRACT:
An improved tape cassette for use with small size tape recorders which provides mechanical indicating means on the cassette which enables the user to tell which side of the cassette has been utilized and further provides a pair of depressions formed in two rear corners of the cassette which are adapted to receive a sensing lever of the tape machine for preventing erasure of the tape accidentally. The placement of the depressions at the rear corners allow the cassette and the machine with which it is to be used to be made smaller and much easier to align the sensing lever of the recorder, than in the prior art.

REFERENCES:
patent: 2612565 (1952-09-01), Heller
patent: 2894700 (1959-07-01), Roberts et al.
patent: 3146316 (1964-08-01), Knoth
patent: 3175222 (1965-03-01), Nerwin
patent: 3495787 (1970-02-01), Wallace
patent: 3622102 (1971-11-01), Fox
patent: 3650378 (1972-03-01), Kakiuchi et al.
patent: 3702907 (1972-11-01), Sato
patent: 3751043 (1973-08-01), Bracci

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