Recording medium cartridge with a twin-coiled torsional spring-b

Details Recording medium cartridge with a twin-coiled torsional spring-b Recording medium cartridge with a twin-coiled torsional spring-b

1999-03-16

2000-09-26

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Record medium

In container

360132, 369291, 2423471, G11B 2303, G11B 23027

Patent

active

061250120

ABSTRACT:
A cartridge includes a housing having a medium chamber defined therein for accommodating the recording medium and also having at least one access opening defined therein, a slide shutter slidably mounted on the housing for movement between an opened position in which the access opening is opened and a closed position in which the access opening is closed, and a biasing member for biasing the slide shutter towards the closed position. The biasing member is in the form of a twin-coiled torsional spring including first and second coils connected together by means of a bridge and first and second spring arms extending outwardly from the first and second coils, respectively. The first spring arms has a free end engaged to the slide shutter and the second spring arm has a free end engaged to a portion of the housing.

REFERENCES:
patent: 3759465 (1973-09-01), Janssen et al.
patent: 4045821 (1977-08-01), Fujikura
patent: 4620254 (1986-10-01), Smith, II
patent: 4945530 (1990-07-01), Sandell et al.
patent: 5257153 (1993-10-01), Sakurada

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