Cartridge for optical data discs

Details Cartridge for optical data discs Cartridge for optical data discs

1987-11-13

1990-03-13

Stephan, Steven L.

Dynamic information storage or retrieval

Storage medium structure

Adjuncts or adapters

206444, 360133, G11B 2303, G11B 2504

Patent

active

049088173

ABSTRACT:
An optical data disc is enclosed in a protective cartridge including a pair of interlocking plastic shells. The shells have integral resilient fastening hooks which are locked by plugs to prevent disassembly. A two-piece sliding door is opened for exposing the disc during a read operation. In one embodiment, the sliding door includes two metal shutters having forward portions stamped with resilient hooks which are permanently retained in an undercut groove formed in a plastic slider engaged in a track defined by two plastic shells. The rear portions of the metal shutters are overlapped by respective shutter retainer strips secured to ledges formed in the shells. The door is urged towards a closed position by a double coil torsion spring providing a substantially constant closing force along the range of travel of the slider. A pivot having detent positions is provided for selectible blocking of a write protect hole formed through the shells. An alternative embodiment of sliding door is disclosed which comprises two molded plastic shutters that each have an integrally formed slider which are adapted for innerfitting engagement and for supporting the door for sliding movement relative to the cartridge shells. A locking lever also is disclosed for engaging the disc in response to movement of the door to a closed position for retaining the disc against movement during periods of non-use of the cartridge.

REFERENCES:
patent: 4481552 (1984-11-01), Dona et al.
patent: 4536812 (1985-08-01), Oishi et al.
patent: 4589105 (1986-05-01), Nemoto et al.
patent: 4613044 (1986-09-01), Saito et al.
patent: 4682322 (1987-07-01), Ohta
patent: 4688206 (1987-08-01), Nakagawa et al.
patent: 4714973 (1987-12-01), Kato et al.

Affiliated with

Also associated with

Rating

Cartridge for optical data discs does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cartridge for optical data discs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cartridge for optical data discs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-55933