Helical scan type tape cassette having tape threading means

Details Helical scan type tape cassette having tape threading means Helical scan type tape cassette having tape threading means

1974-05-29

1976-03-30

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record medium

In container

360 85, G11B 2304, G11B 1566

Patent

active

039478920

ABSTRACT:
A tape cassette for a helical scan type recording and reproducing apparatus comprising upper and lower cylindrical members capable of engaging with each other and adapted to accept a magnetic head therein, and movable poles connected with the upper cylindrical members and capable of stretching a tape outward to prevent contact with various parts of the recording and reproducing apparatus in loading and retrieving the tape cassette. The upper cylindrical member has a helical projection to engage with a helical groove formed in a support member so that it moves also vertically with the rotation thereof so as to expose the magnetic head and take up the tape.

REFERENCES:
patent: 3510605 (1970-05-01), Ottens
patent: 3639697 (1972-02-01), Koguma

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