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Class Information
Number: 720/743
Name: Dynamic optical information storage or retrieval > Optical storage medium structure > Disk cartridge > Shutter member > Shutter spring mechanism for opening or closing
Description: Subject matter including a flexible device which biases the shutter member into an open or uncovered position.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7526783 |
Disk cartridge |
Apr. 28, 2009 |
| 7512961 |
Disk cartridge, and recording and/or reproducing device |
Mar. 31, 2009 |
| 7103902 |
Information recording medium cartridge having a pair of movable shutter members |
Sep. 5, 2006 |
| 6977797 |
Cartridge having a recording mode switching member |
Dec. 20, 2005 |
| 6704265 |
Cartridge holding mechanism for optical storage device |
Mar. 9, 2004 |
| 6643242 |
Disk cartridge shutter door opener |
Nov. 4, 2003 |
| 6618351 |
Cartridge and method of cleaning recordation medium surface |
Sep. 9, 2003 |
| 6307710 |
Storage disk cartridge |
Oct. 23, 2001 |
| 6166883 |
Spring assembly for biasing shutter of a disk cassette |
Dec. 26, 2000 |
| 6157517 |
Shutter mechanism for disk cartridge |
Dec. 5, 2000 |
| 6125012 |
Recording medium cartridge with a twin-coiled torsional spring-biased shutter |
Sep. 26, 2000 |
| 6023398 |
Disk cartridge with rotatable cartridge door |
Feb. 8, 2000 |
| 5963538 |
Disk cartridge |
Oct. 5, 1999 |
| 5777982 |
Disk cartridge having a particular belt and slider configuration |
Jul. 7, 1998 |
| 5537389 |
Disk cartridge having a single closing energizer for closing two independently opened shutters |
Jul. 16, 1996 |
| 5515358 |
Disk cartridge and method for constructing the same |
May. 7, 1996 |
| 5444691 |
Disc Cartridge |
Aug. 22, 1995 |
| 5289457 |
Disc cartridge with bent spring design for closing a closure shutter |
Feb. 22, 1994 |
| 5257153 |
Disc case |
Oct. 26, 1993 |
| 5249177 |
Structure for preventing dislocation of a spring in an optical disk cartridge |
Sep. 28, 1993 |
| 5166922 |
Disk cartridge |
Nov. 24, 1992 |
| 5155647 |
Disk cartridge with improved shutter assembly |
Oct. 13, 1992 |
| 5073889 |
Optical disk case assembly |
Dec. 17, 1991 |
| 5063558 |
Disk cartridge |
Nov. 5, 1991 |
| 4943880 |
Disk locking mechanism for disk cartridge |
Jul. 24, 1990 |
| 4908817 |
Cartridge for optical data discs |
Mar. 13, 1990 |
| 4853925 |
Information memory unit |
Aug. 1, 1989 |
| 4589105 |
Flexible disc cassette |
May. 13, 1986 |
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