"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7220054 | Dynamic pressure bearing apparatus A dynamic bearing apparatus which supports a shaft and a bearing so as to be capable of relative rotation by a dynamic pressure of a lubricating fluid. A bottomed screw hole (21a) is provided to at least one end of the shaft (21) to screw a head... | 05/22/2007 |
| 7101084 | Dynamic pressure bearing device A dynamic bearing apparatus which supports a shaft and a bearing so as to be capable of relative rotation by a dynamic pressure of a lubricating fluid. A bottomed screw hole (21a) is provided to at least one end of the shaft (21) to screw a head... | 09/05/2006 |
| 6991170 | Card ejecting mechanism A card forcible ejection mechanism used to forcibly discharge a card retained in a card reader can be set in a small space and can be attached during a post-assembling step. The mechanism has a carriage which can move along a carriage direction of a card and is prov... | 01/31/2006 |
| 6981647 | Foreign matter detecting mechanism, carriage moving mechanism and method for operating carriage moving mechanism A foreign matter detection mechanism for detecting a foreign matter other than a carriage object for the purpose of, e.g., preventing illegal use of a card by detecting a foreign matter other than the card inserted into, e.g., a card reader, a carriage movement mech... | 01/03/2006 |
| 6961298 | Optical head device having a plurality of optical elements with various transmission efficiencies In an optical head device for recording/reproducing information on/from an optical recording medium, at least one laser light source emits a laser light beam provided with a first polarized light component and a second polarized light component which are perpendicul... | 11/01/2005 |
| 6933644 | Magnetic levitation motor A magnetic levitation motor which rotates a rotor in a levitated state with respect to a stator by a direct-current magnetic field and stator windings. The magnetic levitation motor comprises: a direct-current magnetic field generating device (4) which forms ... | 08/23/2005 |
| 6923372 | Card gate mechanism in card reader A structure of a card gate mechanism in a card reader of, e.g., an ATM (automated teller machine). In order to constitute a gate opening (3) of a card gate mechanism (1), a gate frame (4a, 4b) which includes a wide-open port... | 08/02/2005 |
| 6876100 | Small power generating device and water faucet device A small generator includes a hydraulic turbine provided in a fluid path rotating with a passage of a fluid in a predetermined flow and a rotator coupled to the hydraulic turbine rotating together with the hydraulic turbine which acts as a rotor portion opposed to a ... | 04/05/2005 |
| 6824062 | Card transporting mechanism for card reader A card reader is provided with a card transporting mechanism wherein the trailing end of a card as viewed in a card transporting direction is brought into contact with a first card engaging/holding member moving in a card transporting direction, and the card is tran... | 11/30/2004 |
| 6825587 | Rotor motor with a resin coil bobbin The present invention provides a motor having an urging member for urging a rotor disposed oppositely to a stator in the axial direction, in which the rotor is rotated in a state under an urging force of the urging member, characterized in that a positional regulati... | 11/30/2004 |
| 6798819 | Optical pickup apparatus and method of manufacturing the same A deflector deflects laser light emitted from a laser light emitting device. A lens driver moves an objective lens for conversing the laser light deflected by the deflector onto an optical recording disk in a focusing direction and a tracking direction thereof. A fr... | 09/28/2004 |
| 6793394 | Hydrodynamic bearing device A pair of thrust hydrodynamic bearing portions are made to communicate with each other to form fluid circulating passages for equalizing a pressure imbalance between both thrust hydrodynamic bearing portions. Even in a case where a pressure imbalance has occurred in... | 09/21/2004 |
| 6791824 | Tape running apparatus, motor board, and capstan motor A motor board 44 of a capstan motor, which is made of a metallic material offering good heat dissipation is provided in a tape running apparatus 1 in such a way as to face a circuit board 6 thereof. A motor drive IC 43, into which drive c... | 09/14/2004 |
| 6785200 | Diffraction grating element and optical pickup device incorporating the same A grating mounting section 10 for mounting a laser diode 3 and a diffraction grating element 8 is formed in a frame body 2 of an optical pickup device. The diffraction grating element 8 includes a main body 83 provided with ... | 08/31/2004 |
| 6781776 | Magnetic card reader and magnetic data reproduction method using signal peak point intervals A magnetic card reader for causing a magnetic card to make a move relative to a magnetic head and reproducing data on the magnetic card by the magnetic head, said magnetic card reader includes an amplifier for amplifying a magnetic signal provided by the magnetic he... | 08/24/2004 |
| 6775065 | Diffraction element and optical pickup device In a diffraction element, a diffraction grating is formed with a grating pitch having different diffraction angles in accordance with a wavelength of a laser light beam incident thereon. The wavelength is variable in accordance with an environment temperature. The d... | 08/10/2004 |
| 6769445 | Valve drive device A gear meshing with a pinion controls the angle of rotation of a valve element which is brought into sliding contact with a valve seat, thereby controlling the opening and closing of a communicating hole of outflow pipe. During welding the valve seat plate and a hou... | 08/03/2004 |
| 6747382 | Motor In a small-sized motor used for lens drive, to provide the motor which is easy to attach to another member and gives space saving. Further, to provide a motor in which the number of parts is reduced thereby to improve assembly efficiency and make shaft accuracy good... | 06/08/2004 |
| 6745639 | Geared motor A geared motor has a motor unit and a plurality of transmission gears for transmitting a driving force from the motor unit to the output shaft. Shaft supporting parts for supporting both ends of the shafts of the transmission gears are formed in the surfaces of a ca... | 06/08/2004 |
| 6739638 | Work transfer device Relating to improvement in a hand of an apparatus for taking out a workpiece such as liquid crystal glass from a cassette and carrying it to a predetermined position, and aiming at reducing a weight of an arm portion for holding the liquid crystal glass and a quanti... | 05/25/2004 |
| 6713979 | Actuator drive circuit In the invention, pairs of output transistors are provided. An actuator having an inductance is connected to nodes formed between the pairs of output transistors. A drive circuit for the actuator is arranged such that the actuator is driven by causing a drive curren... | 03/30/2004 |
| 6708726 | Valve driving apparatus A first pipe, a second pipe and a third pipe are airtightly connected with each other. A cam member rotates about a rotation axis for moving a valve body so as to open/close the first pipe and the second pipe so that the third pipe is selectively communicated with t... | 03/23/2004 |
| 6707771 | Optical pickup device and method of manufacturing the same In an optical pickup device, wires 16A through 16D resiliently support a lens holder 12 in a cantilever fashion. Of the wires, wires 16A and 16C arranged so as to overlap when viewed in a tracking direction are fixed together by he... | 03/16/2004 |
| 6692237 | Rotary piston cylinder device with radially extending cylinder chambers intersecting at a rotary axis A rotary cylinder apparatus which prevents a fluid from leaking from a contact portion of a piston and a cylinder member and consequently enables efficient rotation. The rotary cylinder apparatus comprises: a rotary cylinder member 2 which has cylinder ch... | 02/17/2004 |
| 6672915 | Connector for motor A connector is connected to a terminal of a coil wound on a motor bobbin in a motor, and coupled with a mating connector to electrically connect the motor and an external device. In the connector, at least one conductive connection member is accommodated ... | 01/06/2004 |
| 6651310 | Method of manufacturing aluminum rotor and motor incorporating the same A method of manufacturing an aluminum rotor and motor incorporating the rotor where after a solvent cleaning step of a rotator body using a chlorine-family solvent, an alkaline degreasing step using an alkaline degreasing agent is executed for cleaning th... | 11/25/2003 |
| 6651029 | Apparatus and method for measuring surface shape The surface shape measuring apparatus comprises a polar coordinate conversion portion for converting the orthogonal coordinate data representing the surface shape of a measurement object into the polar coordinate data, an approximate expression calculatin... | 11/18/2003 |
| 6637653 | Method of measuring coercive force of a magnetic card A method for judging coercive force of a magnetic card to judge coercive force of a magnetic card to be used. According to the method for judging coercive force of a magnetic card for reproducing or recording magnetic information formed on a low coercive ... | 10/28/2003 |
| 6639688 | Value-sheet issuing device for selectively assigning common images from a local storage A value-sheet issuing device includes a medium supplying section for holding a sheet-like printing medium and supplying said printing medium to a stage for issuing a value sheet, a security processing section for selectively assigning security characteris... | 10/28/2003 |
| 6608416 | Motor and method of manufacturing the same A motor includes a cylindrical rotor having a magnet, a stator having a cylindrical inner peripheral surface opposing to an outer periphery of the rotor, an output shaft projecting from one axial end side of the stator, and a frame fixed to the one axial ... | 08/19/2003 |
| 6596215 | Method of manufacturing a stepping motor A stepping motor having a rotor consisting of a permanent magnet magnetized such that N poles and S poles are alternately arranged in the hoop direction, stator cores with pole teeth oppositely disposed on the outer peripheral surface of the rotor, and a ... | 07/22/2003 |
| 6594014 | Color detecting sensor and method for ink ribbon A color detecting sensor includes a light emitting element for emitting red light, a light emitting element for emitting green light, a light emitting element for emitting blue light, a light receiving element for receiving light emitted from each of the ... | 07/15/2003 |
| 6584061 | Optical pick-up device An optical system of an optical pick-up device 1 comprises a half mirror 13 and a prism 14 which serve to guide a first laser beam L1 for a CD and a second laser beam L2 for a DVD to the optical recording medium side and a common light receiving element 1... | 06/24/2003 |
| 6577564 | Optical pickup device An optical pickup device includes a semiconductor laser for emitting forward and backward laser light from front and back emergent end faces thereof, focusing device for focusing the forward laser light emergent from the front emergent end face of said se... | 06/10/2003 |
| 6570723 | Magnetic card reader and magnetic data reproduction method, data demodulation method and demodulator of magnetic record data A magnetic card reader for causing a magnetic card to make a move relative to a magnetic head and reproducing data on the magnetic card by the magnetic head, said magnetic card reader includes an amplifier for amplifying a magnetic signal provided by the ... | 05/27/2003 |
| 6570722 | Magnetic card reader and magnetic data reproduction method using signal peak point intervals A magnetic card reader for causing a magnetic card to make a move relative to a magnetic head and reproducing data on the magnetic card by the magnetic head, said magnetic card reader includes an amplifier for amplifying a magnetic signal provided by the ... | 05/27/2003 |
| 6559553 | Small-sized hydroelectric power generating apparatus A small-sized hydroelectric power generating apparatus includes a body case having a fluid passage, a water wheel provided at the above fluid passage and rotating with passing of the fluid having the predetermined flowing amount, a rotator coupled to this... | 05/06/2003 |
| 6554476 | Dynamic pressure bearing device and method of manufacturing the same In order to manufacture a dynamic pressure bearing device, there are provided a shaft member, and a thrust plate formed with a press-fitting portion into which the shaft member is press-fitted. At least two relief portions are formed in at least one of th... | 04/29/2003 |
| 6552317 | Optical pickup device A phase difference plate (12) converts states of polarization of emergent light form a laser light source (13) and return light form an optical recording medium (5). A diffractive element (21) separates the return light from an optical axis leading from t... | 04/22/2003 |
| 6543066 | Washing water supply apparatus A washing water supply apparatus 1 for supplying washing water to a toilet has valve members A and B opening/closing an opening leading to the toilet from a washing water source, cam members 8 and 9 opening/closing the valve members A and B directly, and ... | 04/08/2003 |