Magnetic tape cassette with improved spring member

Details Magnetic tape cassette with improved spring member Magnetic tape cassette with improved spring member

1986-01-15

1987-05-05

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record medium

In container

G11B 2308

Patent

active

046636889

ABSTRACT:
In a video tape cassette having upper and define a substantially rectangular housing with an opening extending along a side thereof between end walls of the housing for containing reels having tape wound thereon and guided between the reels in a run extending across the opening, and a lid structure which is pivotally mounted on the housing for movement by a coil spring from an open position exposing the tape run to a closed position in which the lid structure covers the tape run; the assembling of the tape cassette is facilitated by providing anchors on the lid structure by which the coil spring is initially or tentatively located during the mounting of the lid structure on one the housing portions, whereupon the coil spring is transferred into engagement with an anchor on that one housing portion in preparation for assembling of the latter with the other housing portion. An improved coil spring has a leg portion which defines an area of contact with a latch element which is greater than that defined by the length of the leg portion, such as by binding the end of the leg portion.

REFERENCES:
patent: 4418373 (1983-11-01), Fujimori et al.
patent: 4449677 (1984-05-01), Ohta et al.
patent: 4482104 (1984-11-01), Saito
patent: 4591936 (1986-05-01), Kikuya et al.

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