Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 7164627 | Optical pickup actuator circuit having coil protection feature An optical pickup actuator circuit includes: a lens holder 2 supported so as to be slidable along a support shaft and rotatable around the support shaft and for holding an objective lens 8 so that the objective lens 8 forms an image of a light b... | 01/16/2007 |
| 7086071 | Spring-suspension magnetically stabilized pick-up arm The invention relates to a pick-up arm system for the reproduction or replay of records comprising a pick-up arm chassis and a pick-up arm tube. The torsion element suspension of the pick-up arm is axially stabilized by means of cylindrical permanent magnets which a... | 08/01/2006 |
| 6562633 | Assembling arrays of small particles using an atomic force microscope to define ferroelectric domains A method of assembling arrays of small particles or molecules using an atomic force microscope to define ferroelectric domains includes depositing a ferroelectric thin film upon a substrate forming workpiece, then using an atomic force microscope having a... | 05/13/2003 |
| 5278818 | Magneto-optical recording circuitry for reversing a magnetic field A circuit arrangement for reversing a magnetic field, in which an oscillator has a coil connected in parallel with a capacitor. First and second diodes are connected oppositely-poled in a series circuit, which is connected in parallel with the coil and ca... | 01/11/1994 |
| 5191570 | Optical head locating mechanism for magnetically locating an optical head An optical head locating mechanism for locating an optical head adapted to be positioned in an optical device at a desired point. The optical head locating mechanism comprises a first location device for floating the optical head and locating it at a desi... | 03/02/1993 |
| 5126984 | External magnetic field generating device for optical magnetic disk apparatus An external magnetic field generating device for an optical magnetic disk apparatus is arranged radially of the disk and is used to record information on and erase information from the disk by a laser beam. A surface of the external magnetic field generat... | 06/30/1992 |
| 4675859 | Intensified field focus moving coil phonocartridge assembly The invention is an intensified field focus moving coil phonocartridge assembly (10) including a rear magnet (32) and a front magnet (34) mounted in an axially juxtaposed manner within a support sleeve (38) so as to define therewith a magnetic field chamb... | 06/23/1987 |
| 4644518 | Circuit connection for coils wound on yoke of an electromagnetic pickup cartridge An electromagnetic pickup cartridge having a pair of output terminals and a yoke with a pair of arms and a pair of generator coils respectively would on the arms where the first of the coils has a start terminal where the coil winding begins and an end te... | 02/17/1987 |
| 4630253 | Electromagnetic pickup cartridge having elongate core elements Disclosed in a high-performance electromagnetic pickup cartridge with little distortion, comprising a stylus attached to the end of a cantilevered arm, a disk type armature magnetized in its axial direction and secured to the arm, and bar type magnetic co... | 12/16/1986 |
| 4597071 | Pickup cartridge of moving magnet type A moving magnetic pickup cartridge including: a vibratory system having; a stylus arm in a cantilever fashion, a stylus being provided at a free end of the stylus arm, and a permanent magnet being provided at a fixed end of the stylus arm, the magnet bein... | 06/24/1986 |
| 4547819 | Magnetic pickup preamplifier A magnetic pickup which contains both resistance and stray capacitance is terminated by a negative impedance of a kind which compensates for the stray capacitance and part of the resistance, and causes a pole to be produced at a low frequency. This result... | 10/15/1985 |
| 4534022 | Phonograph pick-up with improved shield grounding A grounding technique for a screening shell of a phonograph cartridge. A connector pin is offset with respect to other pins of the cartridge so as to be in direct contact with one of the walls of the shell.... | 08/06/1985 |
| 4524439 | Electromagnetic pickup cartridge with flux sensors mounted above moving magnet An electromagnetic pickup cartridge comprises a movably supported permanent magnet magnetized in the direction of the thickness thereof, a cantilever secured to the magnet with a stylus attached to the free end thereof, and a pair of magnetic flux sensors... | 06/18/1985 |
| 4494227 | Stereo phono pick-up and/or cutter A phonograph pick-up or cutter has a stylus holder carrying a stylus, which cooperates with two transducers, one for each of two orthogonal directions of vibration. Each transducer has a flat coil and an associated magnet having their axes in line. For ea... | 01/15/1985 |
| 4493071 | Pickup cartridge The present invention is directed to a pickup cartridge used for reproducing an information recorded on a record disc, the pickup cartridge having a magnet, a stylus which engages a spiral groove on the record disc, a pole piece for forming a path for a m... | 01/08/1985 |
| 4456984 | Magnetic pick-up and/or cutter cartridge A magnetic cartridge such as a pick-up or cutter, whose magnetic circuits are at least partly hollow, the cavities extending mainly in the direction of the magnetic flux. Each magnetic circuit and in particular each polepiece is formed at least partly wit... | 06/26/1984 |
| 4383310 | Pickup cartridge of movable magnet type A stereo pickup cartridge of a movable magnet type comprising three movable magnets. The magnetic axis of each of the magnets is orthogonal to the cantilever shaft.... | 05/10/1983 |
| 4353125 | Electromagnetic pickup cartridge A stereophonic electromagnetic pickup cartridge in which each of the right- and left-channel yokes is formed by folding a thin strip of a magnetic material over itself many times like pleats into a U-shape; coils are mounted on the yokes; the bases of the... | 10/05/1982 |
| 4345322 | Pickup cartridge for reproducing signals recorded on a 45-45 stereophonic record disk In a pickup cartridge of the moving magnet type, the components of movement of a cantilever in the vertical and horizontal directions are individually detected to produce two kinds of electromotive forces respectively proportional to the velocity of the d... | 08/17/1982 |
| 4249747 | Phonograph pick-up cartridge A magnetic phonograph pick-up cartridge having a fixed assembly portion and a replaceable assembly portion wherein the replaceable portion includes self-contained, longitudinally-extending stylus pole pieces surrounding a pivotally mounted stylus magnet. ... | 02/10/1981 |
| 4221937 | Moving iron type cartridge A moving iron type cartridge comprising a mounting base, a pair of permanent magnets for right and left channels secured to said mounting base, yokes for the right channel secured on the pole sides of said permanent magnet for the right channel and partia... | 09/09/1980 |
| 4218591 | Phonograph cartridge with very hard metal ceramic frame A pick up cartridge which comprises a cantilever at the end of which is mounted, a stylus a generating mechanism which is fixed near the supporting point of the cantilever, a pair of yokes which give a magnetic field to the generating mechanism, and a hol... | 08/19/1980 |
| 4209669 | Pick-up cartridge A moving magnet type pick-up cartridge is disclosed. Coils arranged around a moving magnet have no yoke to prevent the generation of distortion by a yoke.... | 06/24/1980 |
| 4205856 | Pickup cartridge A pickup cartridge for reproducing disk-shaped record carriers having a spiral groove as an information track carrying audio and/or video information. A horn-shaped resilient seal member prevents entry of foreign matters, such as moisture or dust into the... | 06/03/1980 |
| 4177360 | Moving magnet type pickup cartridge A pickup cartridge is disclosed, which comprises a cantilever having one end provided with a stylus and the other end provided with an armature magnetized in the axial direction thereof, a yoke having at least three leg portions each having an end face, t... | 12/04/1979 |
| 4174111 | Compressive pivot suspension system for an electromagnetic cartridge In a combined stylus and generator system, the combination with a stylus adapted to operate with a record groove and a generator moving in response to the movement of said stylus means for suspending the stylus and generator system for universal movement.... | 11/13/1979 |
| 4170783 | Signal pickup device for reproducing an information signal recorded on a track of a rotary recording medium A signal pickup device is used in an apparatus for reproducing an information signal recorded in a track on a horizontal surface of a rotary recording medium. The signal pickup device comprises a reproducing stylus for tracing the track to reproduce the i... | 10/09/1979 |
| 4140321 | Phonograph cartridge replaceable stylus assembly A phonograph cartridge replaceable stylus assembly is provided. The assembly comprises a housing having a nonmagnetic tube affixed thereto. The tube has a forward end and a rear end extending outwardly away from the housing. A nonmagnetic stylus arm exten... | 02/20/1979 |
| 4136884 | Electromagnet type pickup device An electromagnet type pickup device including a vibrating tubular member supporting a stylus-carrying cantilever and having a funnel-shaped engaging portion formed at one end, and including a tension wire having a bulging portion formed at one end, the ot... | 01/30/1979 |
| 4123067 | Stylus vibrating mechanism in pickup cartridge Stylus vibrating mechanism having a vibration transmission part composed of a magnet, a pivot suspension formed integrally with the magnet and a rubber damper, the pivot suspension of which has a hole formed on the surface thereof opposed to a stylus tip ... | 10/31/1978 |
| 4103117 | Pick-up cartridge A pick-up cartridge has a plate-like first magnet magnetized thicknesswise and having a central through hole through which extends a cantilever having on one end a reproducing stylus and on the other end a disc-shaped armature of a highly permeable materi... | 07/25/1978 |
| 4103116 | Pickup cartridge with moving magnet armature A pickup cartridge of the moving magnet type. The vibration center of its vibrating system is stabilized by being concentrated at a certain point without appreciable fluctuations, regardless of the vibration amplitude of the vibrating system. Also, it has... | 07/25/1978 |
| 4072823 | Moving magnet pickup cartridge An electrodynamic type cartridge comprises two coiled bodies composed of two frames or cores made of magnetic permeability material wound respectively by coils along the longitudinal direction thereof, the axes of which are positioned in parallel therewit... | 02/07/1978 |
| 4068850 | Stylus unit for pick-ups and/or cutters A stylus unit having a stylus holder with a stylus at one end, a magnetic element captured in the holder, and a locating wire, the stylus holder and the locating wire formed of a reinforced plastic.... | 01/17/1978 |
| 4031335 | Stereo pick-up with casing serving as common pole piece A transducer for scanning or cutting disc-shaped record carriers, in which a movable element is omnidirectionally pivotable, one polepiece being provided for each of the two directions of oscillation. A third polepiece provided in common for the two direc... | 06/21/1977 |
| 4009885 | Stereo phonograph pick-up cartridge A magnetic stereo phonograph pick-up cartidge, including a removable stylus assembly of low mass which includes means for precisely aligning the armature with respect to the pole pieces. A boss on the stylus assembly and a mating aperture on the cartridge... | 03/01/1977 |
| 3991284 | Gramaphone pickup A gramophone or phono pickup comprising two magnetic systems, which are rotatable concentrically to a permanent magnetic armature, which is the transducer element and supports the needle arm. Two U-shaped iron cores with windings thereon are provided, whi... | 11/09/1976 |
| 3987255 | Pickup-cartridge with moving magnet A pickup cartridge having a cantilever with a stylus on the end and a magnet on the other end, with the magnet supported for pivotal motion and having a first magnetic means comprising a yoke with opposite ends of the first magnetic means mounted adjacent... | 10/19/1976 |
| 3973080 | Playback device for a disc-shaped record carrier with transducer lifting for changing playback groove for fast, slow or stop effects A playback device for disc-shaped record carriers containing video signals stored in the grooves thereof which includes an arrangement which, in response to an applied power pulse, displaces the pickup, during playback, by a number of groove widths transv... | 08/03/1976 |
| 3964751 | Phonograph cartridge replaceable stylus assembly A phonograph cartridge replaceable stylus assembly is provided. The assembly comprises a housing having a nonmagnetic tube affixed thereto. The tube has a forward end and a rear end extending outwardly away from the housing. A nonmagnetic stylus arm exten... | 06/22/1976 |
