Magnetic tape cassette with dual guard panel structure

Details Magnetic tape cassette with dual guard panel structure Magnetic tape cassette with dual guard panel structure

1984-03-05

1986-08-19

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record medium

In container

242197, G11B 2302, G11B 1532

Patent

active

046073086

ABSTRACT:
A magnetic tape cassette having an improved guard panel structure for eliminating dust and the like from entering the cassette when the cassette is not being used. The guard panel of the cassette of the invention has a dual-cover structure, including an outer cover which covers the opening through which the tape is pulled from the cassette, and an inner cover having guide protrusions slidably engaged with guide grooves formed in the inner side walls of tape withdrawal holes provided at the opposite sides of the opening and pivotally supported on the outer cover to move in association with the outer cover. In one embodiment, one of the grooved side walls which form the guide grooves is made elastic to push the other guide protrusion into elastic abutment with the opposite side wall. In another embodiment, a leaf spring is fixed to the body of the cassette and elastically engages one of the guide protrusions.

REFERENCES:
patent: 4418373 (1983-11-01), Fujimori et al.
patent: 4449677 (1984-05-01), Ohta et al.

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