| Patents for G11B 21 - Head arrangements not specific to the method of recording or reproducing (20,963) |
|---|
| 06/20/1978 | US4096534 Track accessing circuitry for a disk file with switchable filter |
| 06/06/1978 | US4094013 Optical storage disk system with disk track guide sectors |
| 05/30/1978 | US4092681 Flexible disk file access mechanism |
| 05/23/1978 | US4091427 Electric control system for magnetic sheet recording and reproducing apparatus for audiovisual instruction |
| 05/09/1978 | US4089029 Data storage apparatus using a flexible magnetic disk |
| 05/02/1978 | US4087843 Positioning device for the access arm of the magnetic head of a magnetic disk storage |
| 05/02/1978 | US4087842 Recording track eccentricity compensation method and means |
| 05/02/1978 | US4087839 Filmstrip transducing apparatus and method |
| 04/25/1978 | US4086659 Control system for disk drive |
| 04/25/1978 | US4086636 Restore method and apparatus for disk drive |
| 04/18/1978 | US4085427 Transducer positioning system |
| 04/04/1978 | US4083040 Trace locator for a multi-trace recorder |
| 03/21/1978 | US4080636 System for damping vibrations in a deflectable transducer |
| 02/21/1978 | US4075667 Method and apparatus for aligning read/write heads in a disc recorder |
| 02/07/1978 | US4072990 Servo positioning system for data storage apparatus |
| 01/10/1978 | US4068269 Positioning system for data storage apparatus and record medium for use therewith |
| 01/10/1978 | US4068267 Magnetic disk storage apparatus in which servo track zone provides signals for both moving speed and position of transducer |
| 10/04/1977 | US4052746 Head assembly for magnetic recorders |
| 10/04/1977 | US4052741 Track seeking and following |
| 09/13/1977 | US4048660 Record track following and seeking |
| 06/28/1977 | US4032984 Transducer positioning system for providing both coarse and fine positioning |
| 06/21/1977 | US4030815 Hydrostatic bearing apparatus |
| 05/10/1977 | US4022986 Playback unit for a long-playing record of a time division multiplexed audio signal |
| 04/26/1977 | US4020505 Magnetic sheet player with an adjustable inclined magnetic head |
| 04/19/1977 | US4019205 Disc drive with rotary access mechanism |
| 04/05/1977 | US4016603 Disk storage apparatus having signals recorded in a specific format |
| 02/08/1977 | US4007493 Track positioning system for magnetic transducer head |
| 02/01/1977 | US4006294 Transducer head assembly with fluid bearing and head height control system |
| 02/01/1977 | US4006292 Information recording and reproducing system with plural information tracks within a single groove |
| 11/30/1976 | US3995316 Or reproducing apparatus, and record assembly for use therein |
| 11/23/1976 | US3993863 Disc record groove skipper |
| 11/16/1976 | US3992576 Floating device for information disc apparatus |
| 09/28/1976 | US3983318 Velocity correction system with damping means |
| 08/31/1976 | US3977684 Playback apparatus, in particular a video player |
| 08/31/1976 | US3977029 Box spring assembly with coated wire components |
| 08/10/1976 | US3974524 Magnetic storage apparatus employing flexible record disks with peripheral disk-identification means |
| 08/03/1976 | US3973080 Playback device for a disc-shaped record carrier with transducer lifting for changing playback groove for fast, slow or stop effects |
| 07/13/1976 | US3969574 Tubular player arm for an optical recording and reproducing device with drive coil and tachogenerator coil on other end |
| 06/15/1976 | US3963861 Disc record groove skipper apparatus |
| 06/15/1976 | US3963860 Locked groove detection and correction in video disc playback apparatus |
| 06/08/1976 | US3962724 Method of and device for testing movable magnetic heads for ability to trace a predetermined spiral magnetic track without deviating therefrom |
| 06/01/1976 | US3961131 Disc record locked groove escape apparatus |
| 06/01/1976 | US3960443 Optical head moving device |
| 05/11/1976 | US3956766 Counter resetting circuitry for magnetic disk system |
| 05/11/1976 | US3956581 Pickup arm apparatus |
| 05/04/1976 | US3954272 Signal pickup return mechanism |
| 04/27/1976 | US3953891 Soundhead restore mechanism for use in a disc machine |
| 04/27/1976 | US3953816 Position detecting system |
| 04/20/1976 | US3952147 Pickup arm cartridge |
| 04/20/1976 | US3952145 Pickup arm cartridge apparatus |
| 04/13/1976 | US3950783 Disk file access mechanism |
| 04/13/1976 | US3950621 Apparatus for optically reading a reflecting record carrier |
| 04/06/1976 | US3949422 Tape recorder with pivotal erase head bearing |
| 03/30/1976 | US3947888 Hydrodynamic bearing head providing constant spacing |
| 03/30/1976 | US3947875 Magnetic recorder test article and methods |
| 03/23/1976 | US3946439 Recording apparatus for magnetic disks using both sides of the disk |
| 02/24/1976 | US3940794 Stacked flexible record disk storage apparatus having enhanced disk separation |
| 02/17/1976 | US3939493 Tape lifter |
| 02/03/1976 | US3936882 Adjustable mounting arrangement for recording head |
| 02/03/1976 | US3936876 Rotatable data storage apparatus with track selection actuator having multiple velocities |
| 02/03/1976 | US3936610 Dual delay line storage sound signal processor |
| 01/06/1976 | US3931641 Transducer suspension mount apparatus |
| 01/06/1976 | US3931457 Information carrier having addressed information tracks |