| Patents for G11B 17 - Guiding record carriers not specifically of filamentary or web form, or of supports therefor (20,090) |
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| 11/14/1978 | US4125883 Apparatus for centering and clamping a flexible magnetic recording disc |
| 11/14/1978 | US4125264 Record positioning device |
| 11/14/1978 | CA1042547A1 Disc interface location |
| 11/14/1978 | CA1042357A1 Portable recorder control apparatus |
| 11/07/1978 | US4124872 Record/playback apparatus |
| 11/07/1978 | US4124868 Head control means for optical videodisc player |
| 11/07/1978 | US4124866 Video disc insertion/extraction system for a video disc player |
| 11/07/1978 | US4124118 Rotational restraint for a video disc package |
| 10/31/1978 | US4123066 Device for automatically turning discs from side to side |
| 10/31/1978 | US4123065 Phonograph for use with record cartridges |
| 10/31/1978 | US4123063 Replay and protective disc for phonograph record changers |
| 10/24/1978 | US4122492 DC restoration utilizing the color burst signal |
| 10/24/1978 | US4122487 Precision phase controlled clock for sampling television signals |
| 10/24/1978 | US4122478 Clock signal generator providing non-symmetrical alternating phase intervals |
| 10/24/1978 | US4122477 Method and apparatus for inserting synchronizing words in a digitalized television signal data stream |
| 10/17/1978 | US4120505 Stabilizing backing plate for a flexible disk store |
| 10/10/1978 | US4120012 Diskette door |
| 10/10/1978 | US4120010 Air bearing head support |
| 10/10/1978 | US4119999 Apparatus for inserting a digital sync word, phase-synchronized to the color subcarrier, in place of the horizontal sync signal |
| 10/03/1978 | US4118748 Member for limiting air door movement in a disk cartridge |
| 10/03/1978 | US4118746 High performance floppy pack and associated system |
| 10/03/1978 | US4118038 Vibration transmission mechanism for a phonograph |
| 10/03/1978 | CA1039848A2 Loading and unloading mechanism for flexible magnetic disks |
| 10/03/1978 | CA1039847A1 Video disk player |
| 09/26/1978 | US4117521 Flexible disc recorder with skewed transducer transport |
| 09/12/1978 | US4114183 Recording system with gas supported record medium |
| 09/12/1978 | US4113262 Record support and alignment apparatus for a video disc player |
| 09/12/1978 | CA1038492A1 Stacked flexible record disk storage apparatus having enhanced disk separation using a primary bending mode in a stack of disks |
| 09/12/1978 | CA1038491A1 Stacked flexible record disk storage apparatus having enhanced disk separation with transducer mounted in disk separator |
| 09/12/1978 | CA1038490A1 Loading and unloading mechanism for flexible magnetic disks |
| 09/12/1978 | CA1038489A1 Selectively tensioned transducer assembly for operation in compliant relation to individual memory discs of a partitionable aggregate of rotating flexible discs |
| 09/12/1978 | CA1038488A1 Stabilization of partitionable memory with flexible rotating discs |
| 09/12/1978 | CA1038302A1 Turntable assembly for phonograph records |
| 09/05/1978 | US4111431 Record player with record determining means |
| 08/29/1978 | US4109919 Package actuated record extracting mechanism for a video disc player |
| 08/15/1978 | USRE29730 Automatic record player |
| 08/08/1978 | US4106066 Magnetic disc cartridge |
| 07/25/1978 | US4103314 Motion control system |
| 07/18/1978 | US4101945 Drive spindle assembly for disc file |
| 07/04/1978 | US4098511 Video disc handling system for a video disc player |
| 07/04/1978 | US4098510 Record player |
| 06/27/1978 | US4097909 Magnetic transducer with inner and outer magnetic medium cooperating surface zones of different convexity |
| 06/20/1978 | US4096579 Velocity control apparatus for disk drive |
| 06/06/1978 | US4094013 Optical storage disk system with disk track guide sectors |
| 06/06/1978 | US4094010 Optical multi-channel digital disc storage system |
| 06/06/1978 | US4093832 Programmable record changer |
| 06/06/1978 | US4093152 Disc caddy and disc player system therefor |
| 05/30/1978 | US4092687 Disc file assembly |
| 05/30/1978 | US4092681 Flexible disk file access mechanism |
| 05/23/1978 | US4091454 Self-centering disk having an eccentric elliptical-shaped center locating hole |
| 05/09/1978 | US4089029 Data storage apparatus using a flexible magnetic disk |
| 05/02/1978 | US4087842 Recording track eccentricity compensation method and means |
| 05/02/1978 | US4087096 Pick-up arm positioning mechanism for an automatic record player |
| 04/25/1978 | US4086641 Partitionable portable flexible disk pack |
| 04/25/1978 | US4086640 Partitionable portable flexible disk pack |
| 04/25/1978 | US4086637 Method and apparatus for loading flexible magnetic recording discs to transducing heads |
| 04/18/1978 | US4085428 Apparatus for recording and reproducing information with respect to a flexible recording medium |
| 04/11/1978 | US4084200 Magnetic disc cartridge |
| 04/04/1978 | US4082293 Phonograph record player or changer |
| 03/21/1978 | US4079946 Turntable assembly for phonograph records |
| 03/14/1978 | US4079427 Flexible magnetic disc recording technique |
| 03/07/1978 | US4078246 Holder for magnetic discs |
| 03/07/1978 | US4077236 Apparatus having inwardly biased fingers hingedly attached to a hub for clamping and driving a flexible disc |
| 02/28/1978 | US4076119 Packaging tray for a videodisc |
| 02/14/1978 | US4074331 Magnetic recording head structure for recording on both sides of a record member |
| 02/14/1978 | US4074330 Flexible disk storage apparatus |
| 02/14/1978 | US4073262 Apparatus for the manufacture of the magnetic coatings of magnetic disks |
| 01/31/1978 | US4071869 Assembling flexible disk record structures |
| 01/31/1978 | US4071866 Disc recorder drive follower assembly |
| 01/31/1978 | US4071862 Disc cartridge |
| 01/31/1978 | US4071854 Device for the stabilization of flexible discs and more particularly of videodiscs and reading apparatus adapted to this device |
| 01/17/1978 | US4069508 Flexible magnetic disc recording system |
| 01/17/1978 | US4069503 Apparatus for recording and reproducing signals using a disc-like recording medium |
| 01/17/1978 | US4068851 Audio/video disc playback apparatus with means for correctly positioning the disc relative to a reference level |
| 01/10/1978 | US4068271 Interchangeable magnetic storage element |
| 01/10/1978 | US4067581 Stepper for slow motion disc recorder |
| 12/27/1977 | US4065799 Means and method for clamping a disk pack |
| 12/27/1977 | US4065135 Turntable for record disc |
| 12/20/1977 | US4064544 Recorder transducer mounting arrangement having a transducer holding plate movable along a mounting surface of a transducer carriage |
| 12/13/1977 | US4063295 Flexible magnetic disc recording technique |
| 12/13/1977 | US4063286 Video disc player |
| 12/06/1977 | US4062050 Magnetic card reader |
| 12/06/1977 | US4061341 Separators for spacing records |
| 11/29/1977 | US4060839 Flexible information storage disc |
| 11/29/1977 | US4060838 Centering pin for cassette apparatus |
| 11/29/1977 | US4060248 Playing apparatus, in particular a video player for playing a record which is made of a transparent material and provided with a central hole |
| 11/15/1977 | US4058846 Grounded transducer for magnetic record disks |
| 11/15/1977 | US4058844 Low-mass short-stroke voice-coil actuator for integrated disk file module |
| 11/08/1977 | US4057840 Flexible disc recording cartridge |
| 11/08/1977 | US4057256 Apparatus for detachably mounting a record sheet in place in a sheet type recorder/player |
| 11/01/1977 | US4056831 Thermal compensation for disk pack systems |
| 10/25/1977 | US4055350 Changer pin for a record changer |
| 10/04/1977 | US4052750 Flexible recording disk with improved spindle mounting means |
| 09/27/1977 | US4051541 Access to floppy disk stack |
| 09/20/1977 | US4049278 Automatic record changer |
| 09/13/1977 | US4048476 Card reader |
| 09/06/1977 | US4047230 Method and apparatus for transferring magnetic signal from a master sheet to copy sheets |
| 08/30/1977 | US4045776 Electronic phonograph selector and memory system |
| 08/02/1977 | US4040107 Disk positioning and ejection device in a disk drive |
| 08/02/1977 | US4040106 Flexible magnetic disc drive apparatus |