Matches 1 - 50 out of 66 1 2 >


Match Document Document Title
7990813 Optical pickup device  
An optical pickup device includes a hosing having three walls connected together whose horizontal cross-section is substantially U-shaped. A first wall supports one end of a shaft, a second wall...
7856719 Single thrust bearing fluid dynamic bearing motor  
A typical dynamic bearing design comprises a ring shaped or circular thrust plate mounted at or near the end of a shaft, the shaft defining together with a surrounding sleeve a journal bearing by...
6951025 Gas dynamic pressure bearing, spindle motor comprising a gas dynamic pressure bearing, and recording disk drive device and polygon scanner comprising a spindle motor  
A gas dynamic pressure bearing is disclosed in which dynamic pressure generating grooves in a radial bearing pump out gas toward a thrust bearing, and dynamic pressure generating grooves in the...
6888278 Spindle motor and disk drive utilizing the spindle motor  
Low-profile spindle motor whose entire shaft length is utilized to configure, along an encompassing sleeve, a radial dynamic-pressure bearing section. One end of the shaft is unitary with the...
6865744 Disk drive with compensation of disk eccentricity  
A device for rotating inside of a disk player and/or recorder a disk shaped data carrier which takes into account that the rotating disk may be eccentered from an imposed rotation axis. A side...
6815850 Flux leakage barrier in fluid bearing for disk drive  
A spindle design for a hard disk drive assembly constructed in accordance with the present invention includes a significantly large gap between the rotating, ferromagnetic hub with its permanent...
6738340 Device for reducing the radial and axial play of a motor shaft in a deck for playing information discs  
The invention relates to a device in a deck for playing information discs (2), which preferably have been provided or can be provided with digital information, the information disc (2) being...
6704272 Spindle rotation driving device with aligning member and air bearings for rotating information storage disks  
A shaft which alternately stacks and holds disks and spacers is rotated by a motor having a rotor and stator. To prevent axial run-out during rotation, when the disks and spacers are fitted on the...
6683843 Turntable driving device for a disc player  
A turntable driving device has a spindle motor 5, a bearing 7, and a wire spring 9. The spindle motor 5 has a rotation shaft 11 which is to be coupled to the turntable 3. The bearing 7 is placed on...
6574186 Assembly method of motor using magnetic lubrication fluid  
A conventional plain bearing, in which dynamic pressure is generated by means of lubricating oil, has been assembled in such a way that the whole bearing device is assembled and then the...
6556536 Vacuum apparatus  
A vacuum apparatus particularly suitable for disk recording systems has a rotatable shaft mounted on a support body by an air bearing, the air bearing being provided within a vacuum chamber. A...
6552456 Hydraulic dynamic pressure bearing motor  
A hydraulic dynamic pressure bearing motor has a rotational shaft mounted to undergo rotation about a rotational axis and having a shaft section and a flange section. A sleeve has a cavity for...
6438094 Device for reading from or writing to recording media in disc form exhibiting unbalance  
The present invention relates to a device for reading from or writing to recording media in disc form which has an unbalance compensation means. The object of the invention is to propose a device...
RE37455 Axially compact direct drive for storage disk hub  
An axial compact direct drive for a storage disk comprises a stator, a rotor carrying a hub for receiving storage disks and a bearing arrangement. The bearing arrangement is disposed at a radially...
6175547 Positive and negative rotation gas dynamic pressure bearing, spindle motor having dynamic pressure bearing, and rotator device having spindle motor as driving source  
A positive and negative rotation gas dynamic pressure bearing comprises a stationary bearing member, a movable bearing member mounted for rotation relative to the stationary bearing member, dynamic...
5947607 Fluid bearing apparatus having a thrust bearing mounted at both ends of the rotary shaft  
A fluid bearing in which a thrust bearing is mounted at both ends of a rotary shaft to minimize movement and oscillation of the rotary shaft regardless of a thrust load. The fluid bearing apparatus...
5945751 Disk storage device having a spindle driving motor  
The invention relates to a spindle driving motor, in particular an external rotor motor, the main components of which are accommodated in the interior of a driving hub (4) or the back iron (5)....
5796548 Disk storage device having spindle assembly with ring enclosure  
A disk storage drive is provided with a brushless drive motor having a stator with a winding. An external rotor housing including a permanent magnet coaxially surrounds the stator and is spaced...
5796707 Optical recording and reproducing apparatus having means for correcting installation angle of spindle motor  
According to the present invention, an optical recording and reproducing apparatus includes a deck, a spindle motor installed on the deck, a turn table attached to the shaft of the spindle motor,...
5594606 Disk storage drive for maintaining precision during thermal variations  
A disk storage drive is provided with a brushless drive motor having a stator (34) with a winding. An external rotor housing (32) including a permanent magnet (33) coaxially surrounds the stator...
5394284 Direct access storage device having a stable ball bearing cage design  
The instability of a cage in a precision ball bearing at high speeds may be eliminated by controlling the position of the cage. The control of a position of a cage is accomplished by forming three...
5357500 Miniaturized disc player  
A pickup feeding apparatus is comprised of a first rack provided on a pickup supporting member supported so as to become movable along a guide shaft, a second rack provided slidably relative to the...
5300849 Device for eliminating the axial and radial play of an axle  
A device for eliminating the radial and axial play of a shaft having a circular ferromagnetic plate mounted thereon and which passes through a ferromagnetic stationary fitting. The device also...
5202797 Disk drive device having a single motor for rotating a plurality of disks  
A disk drive device is disclosed including a supporting mechanism for supporting a plurality of magnetic disks, a single motor, and a transmitting mechanism. The supporting mechanism comprises a...
5101399 Deck base locking device for recording playback unit  
Deck bases of conventional disk memory reproduction devices are fastened at four points by side lock pins protruding from the front and rear of the deck base and the side lock plates located...
5001700 Disk clamp and centering apparatus for a beam addressable disk drive system  
Apparatus for centering and clamping a disk on a spindle-drive is disclosed. A bistable magnetic clamp normally held in an axially offset position from the plane of the disk is preferentially drawn...
4792938 Low-noise bearing for phonograph turntables and the like  
A low-noise (low "rumble") segmented bearing for high-fidelity phonograph turntables and the like. In a preferred belt-driven form, the bearing consists of four small, spaced polyurethane pads...
4509160 Disc drive assembly  
A disc drive assembly in which an air bearing supports the drive spindle in a manner centering the drive spindle to provide extremely close track spacing and a transducer assembly characterized by...
4444069 Play-free precision drive apparatus  
A play-free precision drive apparatus is disclosed which comprises a rotatable drive element (2, 20) for driving a driven element (8, 21), a biasing element (12, 26) for urging the driven element...
4442516 Drive mechanism for disc player with bearing supported slider  
A reading device drive mechanism for a video disk player including a chassis, a pair of guide rails mounted parallel to one another on the chassis, a slider contacting corresponding sides of the...
4439851 Turntable lifting apparatus of a video disc player  
According to the present invention, a turntable lifting apparatus of a video disc player comprises: (1) a turntable for supporting a video disc; (2) a chassis attached to said player in parallel...
4432086 Turntable apparatus for video disc player  
A turntable secured to a bearing member is freely rotatable about a support post. The bearing member has radial slots through which the fingers of a segmented spindle protrude. The spindle is...
4371220 Self-lubricating plain bearing  
A self-lubricating plain bearing for a shaft has a bore in which a bearing sleeve is disposed for rotatably supporting the shaft. Disposed in the bore in a portion thereof which is further inward...
4339814 Spindle assembly for a video recorder-playback machine  
A spindle assembly is provided for rotatably supporting and driving a video information disc in a video recorder-playback machine. The spindle assembly comprises a vertically extending journal...
4328575 Disc player having turntable height varying apparatus  
In a record player, one end of a tubular shaft is attached to a turntable. A follower member is disposed within the tubular shaft near the free end thereof such that a portion of the follower...
4256312 Turn table device for record players  
An air supported turntable assembly comprises a rotatable member having a center pin thereon and a stationary member secured to a base plate of a record player. One member is made in a...
4157185 Automatically resettable toy phonograph assembly  
A motorized toy phonograph assembly having a housing comprising in combination; a speaker cone subassembly in which a speaker cone is mounted, a motor subassembly in which a DC motor is mounted and...
4132414 Gramophone turntable apparatus  
Gramophone turntable apparatus comprises a turntable with a hydrodynamic bearing so that, on rotation, the turntable is supported solely by a pressurized film of fluid. The bearing also supports...
4090718 Button-shaped toy record player  
A toy record player in the shape of a lapel-attachable button includes a turntable hingeably attached to a housing and start-up means in the form of a rope for hingeably swinging the turntable from...
4087095 Pneumatic record player  
A record player system wherein a hollow turntable platter is supported with an internal inserted supporting body and incorporated with a driving means mounted on said supporting body. During...
4082293 Phonograph record player or changer  
A phonograph record player or changer having a turntable spindle whose lower end is journalled in a combined thrust and radial bearing, while the upper end of the spindle is located by two contact...
4074313 Electron beam disc recorder  
A disc master, coated with an electron sensitive material, is secured to a turntable which is rotatably mounted within a vacuum chamber. A recorder column protrudes into the vacuum chamber for...
4071252 Fluidically driven turntable  
A method and apparatus for rotatably driving phonograph records, memory disks or the like while substantially reducing if not eliminating the undesirably effects of mechanical vibration and drive...
4068851 Audio/video disc playback apparatus with means for correctly positioning the disc relative to a reference level  
Audio/video disc playback apparatus includes a housing, a cover hinged to the housing, a rotor disc mounted in the housing and driven by a motor, and a pressure disc rotatably mounted underside of...
3912281 Sound reproduction apparatus  
A sound reproducing apparatus capable of manual operation to reproduce audible intelligence recorded in a spiral groove on a disk. The apparatus includes a base member on which is supported a...
3891796 Positioning and mounting means for a flexible video disk  
A video disc player of the type having a stationary table and a motor-coupled, rotatable spindle, and utilizing a flexible foil-type disc record adapted to be driven about its center at a...
3784853 HOMOPOLAR MOTOR FORMING A SOUND RECORD SUPPORT  
A sound record moving device for a sound recording and reproducing apparatus has a base member and a turntable mounted for rotation on the base member. The turntable is constructed from an...
3751044 TURNTABLE SUPPORT FOR A RECORD PLAYER  
A record player having a stationary chassis member and turntable having a turntable shaft. A driving device is coupled to said turntable for rotating said turntable and an air supply device is...
3740056 PHONOGRAPH TOY HAVING SWINGABLE MOTOR AND RECORD-SUPPORTING OUTPUT SHAFT  
Record-driving motor is swingably mounted and the motor output shaft is spring-loaded against a record thereby trapping a phonograph needle between record groove and fixed speaker cone. Needle...
3687462 RECORDING ATTACHMENT FOR A PHOTOGRAPH AND THE LIKE  
A recording attachment partly self-supporting and partly supported and oriented by the turntable of a regular playback phonograph to permit recording on pre-grooved disks. The attachment includes a...
Matches 1 - 50 out of 66 1 2 >