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Class 360/224 - Disk record


Subclass of Class 360 - Dynamic magnetic information storage or retrieval
Definition: Subject matter wherein the medium is a circular element
No. of patents: 29
Last issue date: 01/31/2012


NumberTitleIssue Date
8107195Fluid dynamic bearing unit and disk drive device including the same
A first sleeve rotatably extends around a shaft. First and second flanges are fixed to the shaft. A second sleeve extending around the first sleeve is fixed thereto. A first annular member fixed to the second sleeve surrounds the first flange. A second annular membe...
01/31/2012
8064166Hydrodynamic bearing device, spindle motor, and recording and reproducing apparatus
An annular groove is provided to the rotary portion and/or the fixed portion in a bearing seal portion, and its cross section has a shape approximated by an arc. The annular groove is such that the relationship between the groove width W in a direction following the...
11/22/2011
7233554Disk drive system employing effective disk surface stabilization mechanism
A stabilization part stabilizes surface vibration of a flexible optical disk along a rotation axis direction of the optical disk by means of pressure difference of air flow created according to Bernoulli's law at a portion on which information writing/reading is per...
06/19/2007
7149632On-line system and method for processing information relating to the wear of turbine components
A method comprises storing data relating to the wear of a component of at least one turbine system in a database of a system for processing wear related information, generating a displayable menu containing a plurality of user-selectable links respectively associate...
12/12/2006
7012785Method and apparatus for head slider and suspension reducing air flow turbulence about the slider when accessing a rotating disk in a disk drive
The invention includes head gimbal assemblies, actuators, and disk drives containing at least one airfoil boundary reducing air flow turbulence about a slider induced by said head gimbal assembly accessing a rotating disk surface. ...
03/14/2006
7002773Media enclosures dampening desk vibration in single disk storage devices
Aerodynamic forces contribute to disk and actuator vibration leading to track positioning errors in storage devices such as hard disk drives. The invention provides a variety of dampening mechanisms and a method of dampening to alleviate these problems in single dis...
02/21/2006
6922313Magnetic head slider with resistance to debris accumulation
A magnetic recording head for reading and writing information with respect to a rotating disk medium includes a pad having a working surface which contacts the recording medium. The pad has a leading edge and a trailing edge with the leading edge facing in the gener...
07/26/2005
6922310Rotary head apparatus with magnetic head having convex curve and magnetic playback apparatus using the same
A rotary head apparatus includes a rotary drum having two magnetic heads mounted thereon. Each magnetic head has a recording-medium opposing surface curved in two convex shapes extending towards the outside of the drum, one along the longitudinal cross section of th...
07/26/2005
6014287Speed plate
A speed plate device that is bonded to a Bernoulli plate for juxtaposition to a rotating flexible magnetic disk so that the flexible disk is rendered substantially rigid by a vacuum formed by the air between the speed plate/Bernoulli plate surface and the...
01/11/2000
5140480Method for transducing with a flying head with foil support
Disclosed is a novel flying head supported on a stationary, rigid arm to present a "hydrodynamic" head-face to a passing flexible record segment, the segment being induced by this face to automatically assume a prescribed, relatively controlled configurat...
08/18/1992
5031055Data storage apparatus with head displacement sensor
A data storage apparatus has a magnetic head opposed to a magnetic recording medium and movable relative to the medium so as to magnetically write or read data to or from the medium. A displacement sensor monitors a distance between the head and the mediu...
07/09/1991
4743989Plural magnetic disk assembly
A device and process for stabilizing two coaxially joined flexible magnetic disks is disclosed. Two or more flexible magnetic disks are coaxially joined by a coaxially located spacer. One of the disks is juxtaposed to and rotated against a flat stable Ber...
05/10/1988
4700248Magnetic head assembly with angled slots
A flying magnetic head assembly for use with a flexible magnetic disk is provided with a pair of angled or inclined pressure relief slots formed in a contoured face of the head which is configured to be spaced from the recording surface of the rotating di...
10/13/1987
4419704Bernoulli plate for stabilization of flexible magnetic disk
An improved Bernoulli plate for juxtaposition to a rotating flexible magnetic disk so that the disk is rendered substantially rigid by a vacuum formed by the air between the plate and the disk being urged outwardly under the influence of centrifugal force...
12/06/1983
4396965Flying head with foil support
Disclosed is a novel flying head supported on a stationary, rigid arm to present a "hydrodynamic" head-face to a passing flexible record segment, the segment being induced by this face to automatically assume a prescribed, relatively controlled configurat...
08/02/1983
4376960Flexible disk stabilizing structure
A magnetic recording device for non-contact recording on a flexible disk employs a Bernoulli plate to stabilize the rotating disk. The plate is slightly concave and has a number of small orifices therein through which air is drawn by the disk rotation to ...
03/15/1983
4237503Semi-rigid magnetic recording disk module
In a preferred embodiment, a novel magnetic recording disk module is disclosed, one including a "core" of floppy disks laminated together in abutment, and, on one or both sides of this core, an array of spaced floppy disks, with only the outermost disk ad...
12/02/1980
4195322Record/playback head and data storage apparatus therefor
In a recorder having a transducer with a gap which coacts with a flexible medium to record and/or reproduce data, an endless groove is positioned on the transducer to circumscribe the gap....
03/25/1980
4183069Support apparatus for a flexible disc and disc reader using this support apparatus
The invention relates to support systems for flexible information-carrying discs. More particularly, the invention relates to an air bearing support plate (1) for a flexible disc (3) of which the sliding surface (2) is free in a preponderant sector from a...
01/08/1980
4163267Flying head with compound-foil
Disclosed is a novel rigid flying head presenting a "compound-foil" face to a passing flexible record segment which is induced to automatically assume a prescribed, relatively controlled "approach zone" and associated constant spacing relative to the head...
07/31/1979
4120505Stabilizing backing plate for a flexible disk store
A stabilizing backing plate for a rotating flexible record disk has a bearing surface with a smooth finish to prevent disk wear. A plurality of depressions in the backing plate trap air to prevent the flexible disk from adhering to the backing plate durin...
10/17/1978
4114183Recording system with gas supported record medium
A recording apparatus of a type employing a thin pliant disc of recording material with a transducer disposed to advance and retreat across the disc in recording relation thereto employs a drive construction for rotating the disc and a base member having ...
09/12/1978
4074330Flexible disk storage apparatus
A Bernoulli disk storage apparatus includes an elongated slot or groove having a substantial radial elongated portion for movably receiving a transducer. On either side of the groove are air bearing means which induce a pull down force on the record stora...
02/14/1978
4071854Device for the stabilization of flexible discs and more particularly of videodiscs and reading apparatus adapted to this device
An apparatus for reproducing information on a flexible video disc in which the disc is accurately positioned facing the transducer head by structure including a fixed plate for prestabilizing the disc in rotation to a substantially constant distance in re...
01/31/1978
4003091Transducer support and stabilizer
A toroidal-shaped stabilizer mounts a transducer for controlled penetration into a flexible record media, preferably a record disk. The toroidal-shaped stabilizer has a convex surface facing the flexible disk to be stabilized. The convex surface has an ap...
01/11/1977
3980810Device for locally positioning a flexible rotating disc
The present invention relates to a device designed to constrain the surface of a flexible disc, rotating about an axis, to pass very accurately through a predetermined point. This device is applicable to the read-out of video-signals, and especially of op...
09/14/1976
3967320Arrangement for guiding a rapidly rotating record carrier foil
In a system for guiding a rapidly rotating record carrier foil, by establishing a flow of air, so as to give the foil a stabilizing curvature which is stationary in space and which has a crest line extending along a diameter of the foil, the desired curva...
06/29/1976
3947888Hydrodynamic bearing head providing constant spacing
A player for video disc includes a vacuum reading head to "read" recorded information from a thin, flexible video disc. A rotating turntable provides a fluid cushion bearing to support the disc and the vacuum associated with the transducing head assembly ...
03/30/1976
3947886Flexible disc recording apparatus
In electromagnetically reading or writing information on a flexible recording medium, commonly referred to as a "floppy" disc, a read/write head is permanently secured for translational movement with respect to each of a succession of discs which are brou...
03/30/1976
 
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