Disk cartridge having chamfered wall portion

Details Disk cartridge having chamfered wall portion Disk cartridge having chamfered wall portion

1995-09-20

1998-02-10

Renner, Craig A.

Dynamic information storage or retrieval

Storage medium structure

Adjuncts or adapters

360133, G11B 370, G11B 2303

Patent

active

057176841

ABSTRACT:
A disk cartridge with a case comprises upper and lower shell halves, each of which has a head insertion hole and a spindle insertion hole. A pair of projections are provided inwardly at a joint portion between the two holes. The peripheral wall portions of the spindle insertion hole are extended inwardly toward tips of the projections in an arched form. An almost annular projection is provided along a periphery of the spindle insertion hole to increase a supporting portion for supporting the disk when the spindle is taken off from the spindle insertion hole. The inner peripheral walls of the head insertion hole are chamfered. A corner of the groove is chamfered to prevent the corner of the groove from being caught by a part of the guide frame.

REFERENCES:
patent: 4799121 (1989-01-01), Takahashi
patent: 4888761 (1989-12-01), Ohta
patent: 4935834 (1990-06-01), Muehlhausen
patent: 5034844 (1991-07-01), Shiba et al.
patent: 5053905 (1991-10-01), Kiji et al.
patent: 5077625 (1991-12-01), Shiba et al.
patent: 5121380 (1992-06-01), Fujita et al.
patent: 5175726 (1992-12-01), Imokawa
patent: 5196978 (1993-03-01), Wasko et al.

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