Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 4743993 | Plate spring assembly for a magnetic recording disk cartridge A magnetic recording disk cartridge comprises a magnetic recording disk accomodated for rotation in a casing. The magnetic recording disk is provided with a center core having a central opening into which a spindle of a magnetic recording/reproducing syst... | 05/10/1988 |
| 4742410 | Disk drive system with head protection mechanism An improved magnetic disk drive system including a rotatable disk, a shiftable carriage having a pair of read-write heads mounted by resilient arms thereon for coupled relationship with the disk, and a stepper motor for advancing and retracting the carria... | 05/03/1988 |
| 4713714 | Computer peripheral shock mount for limiting motion-induced errors A disk drive shock mount is provided which attenuates shocks and vibrations to a disk drive (1, FIG. 1). The mount comprises a cradle 20 which is affixed to the disk drive housing, and a mounting plate 10 which may be used to suitably secure the disk driv... | 12/15/1987 |
| 4692831 | Disc cartridge having positive isolation means when in storage An improved disc cartridge (1) is disclosed, which comprises a case assembly (4) and an information recording disc (5) flatly rotatably housed in the case assembly. A disc holding mechanism is arranged in the disc cartridge in such a manner that when the ... | 09/08/1987 |
| 4686595 | Apparatus for repositioning a transducer in the absence of electrical current to a drive system A disk drive system includes a mechanism for positioning a movable transducer member in the absence of electrical power to the drive system. The mechanism includes a ferromagnetic lever arm pivotably positioned to engage a movable transducer member and, b... | 08/11/1987 |
| 4656543 | Device for fixing a regulating plate of a magnetic disc device A magnetic disc device applicable to an electronic still camera system or a reproducer in an electronic camera system, wherein a subject is still-photographed pure-electronically and recorded into a rotating magnetic disc, and the reproduction of an image... | 04/07/1987 |
| 4651242 | Magnetic disk apparatus A magnetic disk apparatus using at least one floating magnetic head which is floated above the surface of a rotating magnetic disk by utilizing dynamic pressure of air caused by the rotation of the magnetic disk, the magnetic disk apparatus comprising, a ... | 03/17/1987 |
| 4647997 | Aerodynamic latch for disk file actuator An aerodynamically powered release latch mechanism for a fixed disk data file is disclosed. An airflow generator disk is commonly journalled with a single data storage disk for generating airflow in an enclosed chamber. A latch is journalled for rotation ... | 03/03/1987 |
| 4646192 | Magnetic disc cartridge having improved disc brake A disc of a magnetic disc cartridge is braked while the cartridge is outside of a receptacle of a magnetic disc memory unit by a radially extending leaf spring mounted on a wall of the cartridge so it has a free end engaging an aperture in a drive platter... | 02/24/1987 |
| 4642717 | Mechanism for lifting and lowering magnetic head in magnetic recording and reproducing device A mechanism for lifting and lowering a magnetic head into and out of contact with a magnetic medium such as a magnetic sheet includes at least one guide shaft rotatably supported on a frame and having an eccentric portion. A magnetic head carriage support... | 02/10/1987 |
| 4639863 | Modular unitary disk file subsystem A self contained fixed rotating disk expansion board subsystem may be installed and connected at an expansion slot location of a host computer. The subsystem includes an enclosed head/disk assembly, and circuit elements mounted on a printed circuit board ... | 01/27/1987 |
| 4636896 | Disk recording and playback apparatus having magnetic head separation device A disk recording and playback apparatus comprises a housing base, a cam body rotatably mounted on the housing base and actuatable in response to insertion of a magnetic disk, a bail mounted on the housing base and angularly movable toward and away from th... | 01/13/1987 |
| 4603363 | Stop mechanism using an elastomeric element A soft-stop mechanism for the carriage of a rotating disk storage system is presented. The mechanism consists of an assembly which is affixed to a nonmoving member of the storage system and a protruding pin on the moving carriage. The assembly has a hole ... | 07/29/1986 |
| 4602305 | Magnetic disc memory apparatus incorporating temperature compensation According to the subject invention, the correction for thermal mistracking may be achieved by the incorporation of a compensating plate in the carriage, the plates' length and coefficient of expansion being selected to nullify the off-track shift with tem... | 07/22/1986 |
| 4599666 | Disk drive system apparatus band actuator In a magnetic disk drive system, an apparatus for facilitating movement of a transducer head carriage relative to a rotating magnetic disk and stationary chassis, including a three-arm band actuator for coupling a stepper motor to the carriage, and an ext... | 07/08/1986 |
| 4583142 | Slide lock mechanism for disk drives A slide lock mechanism for restraining movement of the carriage of a disk drive comprises a rod slideably supported by the disk drive housing for movement between two rest positions. A lock pin, fastened to a shaft engaging the rod, is moveable between a ... | 04/15/1986 |
| 4535374 | Whitney-type head loading/unloading apparatus An apparatus is provided for loading a head onto a spinning disk and unloading the head from the spinning disk so that contact between the head and the disk is essentially prevented. The apparatus includes a Whitney-size head joined to the flexure of a Wh... | 08/13/1985 |
| 4530021 | Micromotion release of heads from lubricated magnetic disks In a magnetic recording disk file in which one or more magnetic sliders rest on the surfaces of the disks when the disks are not rotating, a short oscillatory micromotion is imparted to the slider or sliders prior to starting rotation of the disks, this m... | 07/16/1985 |
| 4488190 | Magnetic recording disk cartridge A magnetic recording disk cartridge comprises a recording disk and a causing for accommodating the recording disk. The cartridge is provided with a shutter member for closing the magnetic head receiving openings in the casing. The shutter member is mounte... | 12/11/1984 |
| 4488191 | Magnetic recording disk cartridge A magnetic recording disk cartridge comprises a recording disk and a casing for accommodating the recording disk. The casing is provided with a pair of magnetic head receiving openings in the front and rear side walls thereof. The magnetic head receiving ... | 12/11/1984 |
| 4481543 | Playback apparatus for producing still images A still image playback apparatus which has a single playback head which is mounted on a head positioning means adjacent a magnetic disc which is rotated at the field frequency and wherein the disc has a plurality of concentric tracks each of which carry v... | 11/06/1984 |
| 4476508 | Apparatus for recording flexible magnetic disks An apparatus for recording flexible magnetic disks contained in envelopes comprises a mandrel engageable with a central zone of the disk to rotate the disk within the envelope, and a carriage 41 which is movable radially relative to the disk and on which ... | 10/09/1984 |
| 4470083 | Magnetic recording disk cartridge An improved design for a compact floppy disk cartridge is provided in which the wiping fabric is prevented from moving and causing stringers out the head access window. This is accomplished by providing ribs on both halves of the cartridge case which, tog... | 09/04/1984 |
| 4464742 | Stylus cleaner pad orientation in disc record player The in-arm stylus cleaner includes a cleaner arm mounted for to-and-fro motion in the stylus arm carriage. A cleaning element, comprising a piece of compliant sheet, has one edge secured to the cleaner arm such that the cleaning element extends away from ... | 08/07/1984 |
| 4438542 | Disk storage drive A motor for direct or coaxial drive of a disc storage, mounted in a center hole formed in a storage disc includes a rotor and a stator which form together with an air gap separating the rotor from the stator a magnetic circuit. The stator has a single-pha... | 03/27/1984 |
| 4413299 | State indicating device in a rotary recording medium reproducing apparatus A state indicating device in a reproducing apparatus for reproducing a rotary recording medium recorded with signals which has been accommodated within a case, where the case has a space for accommodating the rotary recording medium, a jacket having an op... | 11/01/1983 |
| 4393424 | Pressure arm assembly for disc recorders A pressure arm assembly is disclosed for use in a data recorder of the type employing a disc recording medium and a carrier supporting a magnetic head. The pressure arm assembly includes a bracket and an upper arm pivotally carried by the bracket for rota... | 07/12/1983 |
| 4388655 | Method and apparatus for recording and reproducing video and sound Apparatus in which a recording transducer is moved along a rotating record medium to develop a series of imprints which are phase-synchronized from track to track. The adjacent tracks are merged with the result that the imprints form a slanted pattern of ... | 06/14/1983 |
| 4358801 | Disk unit with rotatable circular information disk A disk unit (1) comprises a circular information disk (2) accommodated in an enclosure, at least one major wall (6) of the enclosure being formed with a slot (11) for an information write and/or read head of a disk drive apparatus, which slot is closed by... | 11/09/1982 |
| 4346416 | Rotary actuator assembly for disk drive head positioner A rotary actuator assembly for positioning read/write heads in disk drive mass storage systems. The actuator assembly includes an actuator motor and one or more actuator arms secured thereto. The motor provides rotary motion of the arms, to move the heads... | 08/24/1982 |
| 4330806 | Transducer feeding mechanism in an apparatus for recording and reproducing a signal on and from a rotary recording medium A transducer feeding mechanism is used for an apparatus for recording and reproducing a signal on and from a rotary recording medium by means of a transducer fed over the recording medium in the radial direction thereof. The mechanism comprises a rotation... | 05/18/1982 |
| 4323939 | Hard fixed disc drive assembly and read-write head actuator A hard fixed head disc drive assembly having a rotating record disc with a transducer cooperating with the surface of the disc. The transducer is mounted on a carriage which has three spaced, grooved bearings, two of which are received by a fixed cylindri... | 04/06/1982 |
| 4320430 | Recording disc cartridge closure mechanism A selectively openable closure mechanism for a magnetic recording disc cartridge for cooperating with a probe member connected to a disc drive unit provides for selectively opening access through an aperture in the cartridge to the interior thereof when t... | 03/16/1982 |
| 4305104 | Information storage position control apparatus A system is disclosed for obtaining read/write head positioning movement and control for a storage disc drive. The rotational energy source for the disc is also utilized for the additional task of indexing the read/write head assembly, thereby eliminating... | 12/08/1981 |
| 4280157 | Actuator apparatus for magnetic disc recording systems Actuator apparatus is disclosed for positioning a plurality of magnetic heads transversely along a path which is substantially a radius of a rotating magnetic disc. The apparatus includes a parallelogram shaped supporting structure comprising a fixed inne... | 07/21/1981 |
| 4239238 | Record extracting mechanism for caddy type video disc player A record caddy, suitable for use with a video disc player, includes a sleeve and a record retaining spine removably located therein. Disposed on the spine are latch members for releasably locking the spine to the sleeve. Latch defeat fingers, disposed in ... | 12/16/1980 |
| 4175270 | Method and apparatus for recording and reproducing video The video or television signals are broken into numerous elements representing spaced portions of the video display screen along the line sweep, and imprints (electrical or optical) for each element are made in a path on a rotating medium which may be a d... | 11/20/1979 |
| 4163996 | Rigid magnetic disc memory apparatus employing stepper motor drive and pivotable head support with temperature compensation An open loop, stepper-motor-driven, rigid magnetic disc memory apparatus for use with a data processing system. A rigid magnetic disc with high track density is driven by a stepper motor in an open-loop fashion or without servomechanism control. The memor... | 08/07/1979 |
| 4157577 | Rotatable storage apparatus with digitally responsive circuitry for track selection A magnetic disk provided with different digital bytes inside and outside of the center line of a magnetic track on the disk, and transducer and recording mechanism for detecting the passage of the digital bytes across the transducer and recording these by... | 06/05/1979 |
| 4150406 | Transducer lifting means employing plural flexures A flexure supported actuator arm carries a plurality of transducer means, each connected to the actuator arm by one flexure; all transducer means are loaded or unloaded by a common lifting mechanism.... | 04/17/1979 |
