Tape cassettes having indications for blind use

Details Tape cassettes having indications for blind use Tape cassettes having indications for blind use

1976-07-06

1977-12-20

Grieb, William H.

Signals and indicators

Navigation devices

35 35C, 116114G, 116DIG17, 242199, G09B 2100

Patent

active

040633705

ABSTRACT:
A tape cassette is provided with a recess or projection indicative of the front or rear side of the cassette, the playing time of the tape contained, the running speed of the tape or the like, which recess or projection is disposed along the peripheral edge of a window formed in a label applied to either surface or to both surfaces of the cassette and which can be utilized for tactile determination of the front or rear side of the cassette, the kind of the tape contained or the like by the blind.

REFERENCES:
patent: 1222369 (1917-04-01), Duncan
patent: 2522423 (1950-09-01), Youhouse
patent: 2937818 (1960-05-01), Zorn
patent: 3718290 (1973-02-01), Wright

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