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Class 369/244.1 - Specified detail of transducer assembly support structure


Subclass of Class 369 - Dynamic information storage or retrieval
Definition: Subject matter having particular detail of structure
No. of patents: 44
Last issue date: 07/01/2008


1    
NumberTitleIssue Date
7394732Object lens drive device, and disc recording and/or reproducing apparatus
The present invention is directed to an object lens drive device adapted for moving an object lens in a focus direction of optical axis direction and in a tracking direction perpendicular to the optical axis direction, and includes a fixed position provided in such ...
07/01/2008
7269120Optical pickup
An optical pickup includes a radiating plate made to abut against a rear surface of a laser diode by positioning an engaging hole provided penetratingly in a central portion of the radiating plate concentrically with the laser diode. Slits are formed in the radiatin...
09/11/2007
7193937Objective lens driving device and optical disk apparatus
Tracking coils are attached to outer surfaces of two focusing coils. Inside the focusing coils, a first magnet and a second magnet are arranged respectively. A third magnet is arranged so as to face the first magnet and the second magnet via the tracking coils. An o...
03/20/2007
7188348Optical disc drive apparatus and method
An optical pickup unit (OPU) includes a moveable structure that is moved by a voice coil motor component in response to an input signal. The moveable structure includes a pattern that is moved corresponding to the input signal. An encoder reads the pattern to genera...
03/06/2007
7046590Objective lens drive device, and disk recording and/or reproducing device
The present invention is directed to an object lens drive device adapted for moving an object lens (21) in a focus direction of optical axis direction and in a tracking direction perpendicular to the optical axis direction, and comprises a fixed portion (1...
05/16/2006
6931651Optical pickup
An optical pickup has a pair of left and right leg portions formed integrally at both side edge portions of a rear end portion of a resilient plate. The leg portions extend forwardly along a horizontal longitudinal direction. A pair of fixing holes are penetratingly...
08/16/2005
6920639Optical pickup
An optical pickup has a support pedestal integrally formed at a rear end portion of a mounting surface of a base. A pair of left and right leg portions extend forwardly from both side edge portions of a rear end portion of a resilient plate. A fixing hole is penetra...
07/19/2005
6915526Object lens driving device and optical head having the same
An object lens driving device comprises a movable unit which supports an object lens and is movably supported by a fixed unit, a first mechanism which has a first magnet affixed to a fixed unit and a first coil affixed to a movable unit, and drives the movable unit ...
07/05/2005
6807671Optical pic-kup
An optical pick-up device that records and/or reproduces information on an optical information recording medium, through the use of holography, can prevent deterioration of recording and reproduction accuracy due to vibrations from exterior or fluctuations in the re...
10/19/2004
6801493Optical pickup device
An optical pickup device including a slider on which an objective lens is mounted and which is elastically movably supported by a support member, an air bearing member provided in the slider so that a lifting force pushes the slider away from the disk according to a...
10/05/2004
4788676Record player
An improved automatic record player utilizes an integrally formed cam on the underside of the turntable in conjunction with a velocity trip mechanism to raise the tone arm from the record and move it up and over onto the rest post in one revolution of the...
11/29/1988
4734902Record player
An auto return record player is provided which can be simply and economically adapted to function as an automatic set down player. Either the auto return player or the automatic set down player is capable of playing a record on the turntable twice and the...
03/29/1988
4630251Video disc reproducing apparatus
A video disc reproducing apparatus is provided with a pickup by which the information recorded on a video disc is detected as a variation in electrostatic capacity. The signal output from the pickup is processed so as to generate a control signal proporti...
12/16/1986
4580257Dual drive system for phono pickup arm
A dual drive system for an automatic record player of a type in which programmed music selection can be carried out. The drive system includes a mechanical first drive system for mechanically driving the pickup arm and an electromagnetic second drive syst...
04/01/1986
4570253Tone arm
A tone arm for a phonograph pickup having a bifilar flexible ligament suspension for vertical and lateral displacement. The suspension takes the place of the more usual pivots, and employs a pair of thin flexible ligaments or fibers in a skewed convergent...
02/11/1986
4539672Low friction phonograph tone arm traverse
The tone arm (13) of a record player is carried by a carriage (14) which is movable along a motor-driven rotating spindle (6) extending tangentially with respect to the axis of the turntable (10). For supporting it on the spindle the carriage has two bear...
09/03/1985
4497053Accurately tracking phonograph arm
A phonograph tone arm cartridge rotating system that keeps the cartridge perpendicular to the record groove radius by pivoting it with a belt and pulley linkage that does not change length or tension during movement of the tone arm....
01/29/1985
4495612Tone arm control mechanism
A tone arm lifting and movement restricting device includes a pair of relatively rotatable and axially movable drive plates having cam and follower surfaces thereon for use in lifting and lowering the arm, while a presettable restricting lever serves to d...
01/22/1985
4477893Tone arm device
A tone arm device for a turntable in which the tone arm is mounted upon an inner movable member rotatably supported on an outer movable member freely rotatable with respect thereto. The rotational position of the inner movable member and hence the tone ar...
10/16/1984
4473899Pickup carriage transporting mechanism for a disk record player and method for manufacturing the same
In a pickup carriage transporting mechanism for a disk record player, such as a video disk player, a stopper made of a plate like member having a U-shaped recess is provided to correct the attitude of the carriage. The carriage is arranged to move left an...
09/25/1984
4435800Automatic record player
A tone arm moving mechanism is provided wherein the tone arm is normally moved over the lead in groove and lowered to the record during the last half of a normal record changing cycle. Means are then provided which are operative during a last record shut-...
03/06/1984
4434483Tone arm
A tone arm comprising a lever with a pickup cartridge on its end and a tracking-force setup assembly, a movable base connected to the lever, and a fixed base, the two bases facing each other. Installed between said bases are a vertical pivot attached to o...
02/28/1984
4390382Tone arm manufacturing method
Method of manufacturing a tone arm by superposing a sheet of graphite flakes bound with resin, on a carbon fiber prepreg, winding the resultant double layer product around a core, heat-hardening the resultant assembly, and removing the core to form a pipe...
06/28/1983
4340956Minimum tracking force stylus
In a video disc player of the type having a signal pickup stylus engaging a disc record for recovering prerecorded information signals, an electromechanical transducer is arranged to cooperate with the signal pickup stylus to regulate the bearing pressure...
07/20/1982
4317192Head suspension velocity control apparatus for electromechanical recorder
A diamond stylus for electromechanically recording short wavelength video signal information in a metal disc master is supported in a cutterhead suspension apparatus. A set of parallel spring steel suspension members are used to mount a cutting stylus ass...
02/23/1982
4295277Stylus positioner
The invention provides a method and apparatus for rapid and accurate stylus overhang positioning and tangential alignment with respect to a turntable. Accordingly a stylus locater plate having an aperture and a stylus positioning mark spaced therefrom is ...
10/20/1981
4286789Simplified record player
A simplified record player constructed such that the driving force from a motor is transmitted through a drive shaft to a tubular shaft which is capable of being coupled to the drive shaft so as to be rotated therewith, but only in the direction of rotati...
09/01/1981
4280705Record player
In a record player an overload coupling is arranged between a command disk and a pick-up arm controlled by the disk. The coupling comprises two coupling members which are pivotable relative to each other out of a neutral position about an axis, which memb...
07/28/1981
4257615Tone arm
This invention concerns a tone arm of the type in which a separate element is supporting the extending parts of the arm. This separate element is comprising the suspension point around which the arm is moving, and it differs from the type of those element...
03/24/1981
4205855Sound reproducing apparatus
A tone arm for sound reproducing apparatus comprises an elongated member of electrical insulating material arranged to support a pick-up head at one end and to be pivotally supported at a point remote from said one end. Several spaced electrical current c...
06/03/1980
4202550Stereo lead wires and arrangements thereof for connecting pick-up device to amplifier
Improved lead wires for use with a stereo record playback system where at least a pair of left channel wires and at least a pair of right channel wires extend from a pick-up device through a tone arm to a stereo amplifier, the lead wires including a groun...
05/13/1980
4198056Protective device for record player
A protective device for pivotable attachment to the cartridge or pickup arm of a record player so that, when lowered onto a moving record disc, the record will pivot the device from a guard position in which it hangs below the stylus to a playing position...
04/15/1980
4162511Velocity correction system for video disc player
A pickup cartridge for use in a velocity correction system includes a polymer bimorph element mechanically interposed between a cartridge housing and a pickup arm carrying a groove-riding stylus. Signals representative of cyclical deviations in the stylus...
07/24/1979
4127274Tone arm system for record turntable
For use with a turntable structure for rotating a sound-recorded disc, an elongated tone arm is mounted pivotally intermediate its ends by a gimbal structure in which concentric rings are pivoted at right angles to each other by means of resilient torsion...
11/28/1978
4101134Sound reproducing unit tone arm
A voice or sound unit adapted for use on toys and the like has a mechanical linkage system with a joint capable of transmitting sound indicia while isolating the tone arm from any absorption of stylus movement. The tone arm can employ flexure hinges to in...
07/18/1978
4092030An apparatus using a pivoted weight mechanism for lifting the tone arm of a record player
An arm is pivotally mounted on a support and movable between a first position at which it is relatively unstable because its center of gravity is above and close to the pivot point and a second position at which it is relatively stable because its center ...
05/30/1978
4082291Pick-up arm assemblies for record players
A pick-up arm assembly for a record player comprises a pick-up arm mounting, a counterbalance device which includes a counterweight and which is mounted to the pick-up arm mounting so as to be pivotable about vertical and horizontal axes, and a pick-up ar...
04/04/1978
4080625Pickup circuitry for a video disc player with printed circuit board
Stylus, having a conductive electrode, is mounted at one end of a pivoted stylus support arm within a pickup cartridge body of non-conductive material, removably received in a conductive housing. A conductive spring, with one end in electrical contact wit...
03/21/1978
4079261Detector for distinguishing between recorded and unrecorded bands of a phonograph record
A detector for scanning the surface of a record on a phonograph turntable to distinguish between recorded and unrecorded bands by detecting physical differences on the record surface. The detector illuminates a portion of the record surface and senses lig...
03/14/1978
4053161Stylus arm lifting/lowering apparatus for a video disc player
A video disc player includes a stylus arm carrying a stylus at one end thereof. The stylus is subject to engagement with a grooved record rotatably disposed on a turntable for playback. The other end of the stylus arm is pivotally secured within a stylus ...
10/11/1977
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