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| Number | Title | Issue Date |
| 5771044 | Method and apparatus for tolerancing three dimensional drawings A computer-aided design system includes a method and apparatus for defining various datums with respect to a three dimensional object shown on the CAD system. The datum is labeled on the computer screen. The computer screen includes a cursor and menus for... | 06/23/1998 |
| 5682274 | Method and apparatus for positioning transducers to correct for read and write element misregistration offsets which vary dependent on rotary actuator angular position across a disk medium An apparatus and method for correcting for track misregistration when a slider or head assembly contains a separate read element and write element. The offset is determined at a first position and at a second position of the actuator arm assembly. From th... | 10/28/1997 |
| 5477402 | Disk file with multiplexed servo system A disk file includes multiple disk surfaces, on which servo information is recorded, with an offset in azimuth from one disk surface to another. Each head comprises a magnetoresistive stripe for reading and an inductive write coil. The servo system reads ... | 12/19/1995 |
| 5419679 | Laminar flow fan and electrical apparatus incorporating fan A laminar flow fan is adapted to fit into a the internal cavity of a fan housing (70). The fan comprises a stack of parallel disk elements (12, 14, 16, 18, 20, 22) mounted for rotation on a motor (40) with the diameters of the disk elements varying within... | 05/30/1995 |
| 5419033 | Method of making load spring manufacturing assembly having an electric conductor carrying and positioning tail for carrying a conductor bonded to the surface of a load spring A method in which the wires from the heads on an actuator arm can be positioned and attached to the arm electronics automatically. A loadspring manufacturing assembly has a pair of wire carrying and positioning tails and a disposable portion. The disposab... | 05/30/1995 |
| 5414853 | Apparatus and method for checking microcode with a generated restriction checker A restriction checker generator is disclosed for generating a restriction checker capable of checking horizontal microcode instructions against restrictions which the microcode instructions must satisfy in order to be valid. The generator comprises means ... | 05/09/1995 |
| 5381284 | Spacer ring reservoir for magnetic recording disk lubricant A lubricant reservoir system for a magnetic disk near contact data storage device, which rotates in unison with the disk assembly to replace lubricant depleted from the disk surface over the life of the device, includes reservoir chambers in disk spacers ... | 01/10/1995 |
| 5369533 | Data storage device having different storage densities for differing types of data In a storage device, such as a magnetic rigid disk drive, data is stored at varying linear densities in the user data storage portions to increase the effective storage capacity of the device as a function of the differences in soft error rate tolerance a... | 11/29/1994 |
| 5331487 | Direct access storage device with vapor phase lubricant system and a magnetic disk having a protective layer and immobile physically bonded lubricant layer A thin film magnetic recording disk that has a layer of lubricant bonded thereto is enclosed within a vapor phase lubricant system that operates to continuously apply lubricant vapors to the disk's bonded lubricant layer by operation of Langmuir kinetics.... | 07/19/1994 |
| 5325491 | Method and apparatus for extending a computer bus Disclosed is a bus expansion unit for extending the bus of a computer system which has an asynchronous bus cycle. The bus expansion unit includes an asynchronous state machine which uses a delay line to determine some of its states. The bus expansion unit... | 06/28/1994 |
| 5317462 | Cover seal for magnetic disk enclosure having stepped mating surfaces To provide a magnetic disk apparatus in which an outline of a seal for hermetically sealing is identical with that of a cover and base having steps at the periphery thereof. In a sealed magnetic disk apparatus in which a cover and base having steps at the... | 05/31/1994 |
| 5315464 | Disk apparatus and manufacturing method thereof Disclosed is a disk drive for storing representations of data. The disk drive includes a housing or enclosure. At least one disk is rotatably attached to the housing. Also attached to the housing is an actuator. A transducing head is attached to one end o... | 05/24/1994 |
| 5315463 | Disk file having thermal expansion ring for ensuring disk/hub concentricity A disk file includes an expansion ring attached to the wall of the hub and which is located between the lowermost disk of the disk stack and the hub flange. A circular ridge concentric with the hub is formed on the ring and engages the underside of the di... | 05/24/1994 |
| 5313352 | Magnetic disk slider having piezo-electric vibration elements In the slider 1 on which a transducer 5 is mounted and which moves above a recording surface 4, in order to generate different vibration modes according to various situations such as vertical lift-off and landing, and breaking away from stiction, etc. A p... | 05/17/1994 |
| 5296980 | Magnetic disk apparatus having recording heads for opposite disk surfaces which are offset from each other Disclosed is a disk drive having at least one disk. An actuator arm carriers at least two sliders which are positioned over the first and second surface of the disk. The actuator arm moves the sliders to various selected positions over disks so that repre... | 03/22/1994 |
| 5287235 | Slider air bearing surface with angled rail configuration Disclosed is a slider with an air bearing surface for flying a magnetic transducer on an air lubrication film over a moving recording medium. The air bearing surface allows the slider to fly at a close and substantially uniform height over the disk surfac... | 02/15/1994 |
| 5268804 | Actuator arm controller for a storage device A data storage device for use with a rotatable data storage medium having a data head and a controller for controlling movement of said data head characterized in that said controller varies the time taken for moving said data head between given positions... | 12/07/1993 |
| 5249092 | Head lead termination A magnetic head/support assembly for incorporation in the data access mechanism of a disk file includes a magnetic head and assembly and a separate member for locating the head leads remotely from the head element. The head lead locating member preferably... | 09/28/1993 |
