Method of assembling a tape cassette and securing a plate spring

Details Method of assembling a tape cassette and securing a plate spring Method of assembling a tape cassette and securing a plate spring

1994-06-15

1996-10-01

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record medium

In container

3601303, 36013031, 36013032, 36013034, G11B 2302, G11B 1560, G11B 23087

Patent

active

055615732

ABSTRACT:
A method of assembling a magnetic tape cassette, and a cassette are provided in which a magnetic shield plate and a plate spring having a pad attached thereto are incorporated very easily into upper and lower cassette halves and are free from chattering. The lower edge of the magnetic shield plate 20 fits into a groove, which is formed on a lower cassette half, and both ends of the plate spring 30 are dropped into receiving grooves at the front ends of projections formed on the lower cassette half. Thereafter, the upper cassette half, having ribs 26 and 36 which contact with the upper edges of the magnetic shield plate 20 and the plate spring 30, is placed on the lower cassette half, and the ribs are then melted by an ultrasonic welder. The magnetic shield plate and the plate spring are held by the molten resin.

REFERENCES:
patent: 4731687 (1988-03-01), Kagano et al.
patent: 4860967 (1989-08-01), Meermans
patent: 4939613 (1990-07-01), Flores, Jr. et al.

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