Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7343611 | Disc cartridge having disc taking-out history detecting portion A disc cartridge including a disc medium which is loaded into a drive device and into/from which information can be recorded/reproduced; a case that houses the disc medium rotatably; a disc opening from which the disc medium provided into the case can be taken out; ... | 03/11/2008 |
| RE40141 | Recording medium cartridge and signal recording apparatus A cartridge for housing a recording medium therein. The cartridge includes a cartridge body configured such that a signal recording apparatus can record a signal onto the recording medium when the cartridge is loaded in the signal recording apparatus. The cartridge ... | 03/04/2008 |
| 7263706 | Disk cartridge and disk player using the same A disk cartridge includes a case accommodating a disk, a cover installed at the case to be capable of being open and shut and having a hole formed thereon to be open to an outside of the cover, a shutter installed under the disk in the case to be capable of moving t... | 08/28/2007 |
| 7243361 | Disk cartridge A disk cartridge including lower and upper shells, a rotation wheel housed rotatably in the cartridge and which houses a disk and has formed therein a second opening, corresponding to a first read/write opening in the lower shell, through which the housed disk is ex... | 07/10/2007 |
| 7181754 | Disk cartridge A disk cartridge which includes a case having an upper wall, a lower wall, and a sidewall, which form an inner receiving space in which a disk is inserted, an opening formed in at least one of the upper wall and lower wall of the case to allow a recording/reproducin... | 02/20/2007 |
| 7159956 | Disc case holding apparatus A disc case holding apparatus includes a plurality of housings. Each of the housings has a bottom wall and a peripheral wall that is attached to and extends upwardly away from the bottom wall such that a pair of lateral sides, a front side and a back side are define... | 01/09/2007 |
| 7103899 | Disk cartridge which accommodates an information-recording disk A disk cartridge, which is compact, which requires a small number of parts, and which is easily assembled, is provided. The disk cartridge of the present invention comprises an upper case and a lower case. Each of the upper case and the lower case is formed to be su... | 09/05/2006 |
| 7073186 | Cartridge type recording medium and disk-shaped recording medium including a hole for centering each thereof, cartridge, driving unit and driving method The object of the present invention is to provide a technology which has high compatibility and can provide users with conveniences. A new system recording medium 100 has a center hole 112 formed on a recording disk 110 and a center hole 121 | 07/04/2006 |
| 7057854 | Disk cartridge having a dust-proof shutter A disk cartridge housing in which a disk compartment is formed by combining an upper shell and a lower shell. The cartridge has an opening portion which overlaps with a shutter member to expose a part of the disk compartment. A convex rib and a concave groove arrang... | 06/06/2006 |
| 7051349 | Disc cartridge, disc recording medium unit and disc recorder and/or reproducer The present invention relates to a disk cartridge in which a disk-like recording medium such as an optical disk, a magneto-optical disk and a magnetic disk is accommodated within a disk compartment of a cartridge housing, a disk recording medium device in which the ... | 05/23/2006 |
| 7031112 | Method of processing metal plate member of disc cartridge A magnetic disc is housed for rotation in a flat casing having a metal shell. The magnetic disc is supported for rotation in the casing by a tubular shaft formed by barring of a metal blank for forming the metal shell. A hole is formed in a part of the metal blank w... | 04/18/2006 |
| 7013476 | Cartridge for miniature optical data storage disc A cartridge for an optical data storage disc includes a sheet metal sheath that is folded back on itself and a plastic insert that is inserted into the sheath. An opening is formed in the plastic insert for holding an optical data storage disc. The sheath includes t... | 03/14/2006 |
| 6901601 | Optical recording medium protection cassette The optical recording medium protection cassette of the present invention comprises a housing, a clasping member and at least one switch member. A first opening for retaining an optical recording medium is formed on a first lateral side of the housing and a groove i... | 05/31/2005 |
| 5831968 | Disc cartridge having a tapered disc storing portion A cartridge body has a disc storing portion for rotatably storing an optical disc, and a disc inlet/outlet port. A lid member for opening/closing the port is mounted on the cartridge body. The port includes a mid portion through which a center portion of ... | 11/03/1998 |
| 5796713 | Disc cartridge with opening detector A cartridge body of a disc cartridge stores an optical disc kept rotatable, and includes a disc inlet/outlet port for taking in and out the optical disc. A lid member is mounted on the cartridge body to be movable between a closed position wherein the lid... | 08/18/1998 |
| 5764622 | Recording medium cartridge and signal recording apparatus A cartridge for housing a recording medium therein. The cartridge includes a cartridge body configured such that a signal recording apparatus can record a signal onto the recording medium when the cartridge is loaded in the signal recording apparatus. The... | 06/09/1998 |
| 5757764 | Disc cartridge having a write protect operating portion disposed within the cartridge body A cartridge body of a disc cartridge includes a disc inlet/outlet port for insertion and removal of an optical disc. A lid is mounted on the cartridge body and rotatable between a closed position wherein the lid closed the disc inlet/outlet port and an op... | 05/26/1998 |
| 5748609 | Disc cartridge including elastically deformable lid member and engaging mechanism for locking lid member to cartridge body A cartridge body of a disc cartridge includes a disc inlet/outlet port for introducing an optical disc into and removing an optical disc from the cartridge body. A lid member is mounted on the cartridge body to be rotatable between a closed position and a... | 05/05/1998 |
| 5719851 | Optical disk data storage cartridge system having hinged disk receptacle with dual disk side access A cartridge receives a variety of optical disks. The cartridge has a hinged holding member for easy insertion and removal of the disks. The holding member is an integral cover having a shutter for access to apertures in both the primary and secondary cove... | 02/17/1998 |
| 5579297 | Optical data storage cartridge having a dual shutter configuration and shutter hinge device A cartridge receives a variety of optical disks. The cartridge has a hinged lid for easy insertion and removal of the disks. A rotatable hub is mounted within the cartridge to receive the disks. An adaptor ring may be inserted into the cartridge to allow ... | 11/26/1996 |
| 5475674 | Disc case for removably housing data discs Disclosed is a disc case characterized in that it allows both loading of the disc as housed in the case main body to the disc drive section and loading of the disc as a simple to the disc drive section, that it is produced with the reduced number of parts... | 12/12/1995 |
| 5150354 | Disk cartridge A disk cartridge includes a main body of the cartridge having an opening on its major surface by which the signal recording surface of an optical disk accommodated in the main body is exposed to the outside and an aperture formed on the lateral surface or... | 09/22/1992 |
| 4746013 | Disc cartridge with releasable locking means A disc cartridge including a housing main body having an opening portion for exposing a disc-shaped recording medium to the outside and for rotatably housing therein the disc-shaped recording medium, a shutter for opening and/or closing the opening portio... | 05/24/1988 |
| 4669078 | Disc case A disc case is constructed for receiving releasably a disc on which information data are recorded and for supporting the disc rotatably in the disc case, and can be set into a reproducing apparatus with the disc received in the disc case. The disc case co... | 05/26/1987 |
| 4266784 | Video disc caddy having disc entrapment A disc record caddy comprises a jacket having an edge opening in communication with a record enclosing cavity, and a record retaining spine subject to insertion into the jacket. The spine defines a first portion forming a closure for the edge opening, and... | 05/12/1981 |
