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Ken Yamamoto
Ken Yamamoto, Shizuoka JP
| Patent application number | Description | Published |
|---|---|---|
| 20100062886 | OIL FEED TYPE AUTO-TENSIONER - An object is to provide an oil feed type auto-tensioner which can reliably prevent air from mixing into hydraulic oil in the pressure chamber. | 03-11-2010 |
| 20110011203 | IN-WHEEL MOTOR DRIVE DEVICE - An in-wheel motor drive device ( | 01-20-2011 |
| 20110133541 | IN-WHEEL MOTOR DRIVE UNIT - An in-wheel motor drive unit ( | 06-09-2011 |
Ken Yamamoto, Kirishima-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100155389 | Ceramic Heater and Mold - Provided is a ceramic heater, which can be manufactured at a reasonable cost. The ceramic heater comprises a heating resistor comprising a first conducting portion and a second conducting portion which face each other and a ceramic base in which the heating resistor is embedded. The first conducting portion comprises a first burr which extends from the first conducting portion and is located between the first conducting portion and the second conducting portion. The second conducting portion comprises a second burr which extends from the second conducting portion and is located between the second conducting portion and the first conducting portion. At least a part of the first and second burrs is spaced apart from the line that linking a starting point of the first burr and a starting point of the second burr in a cross-section perpendicular to a conduction direction of the first and second conducting portions. | 06-24-2010 |
| 20100288747 | CERAMIC HEATER AND GLOW PLUG PROVIDED THEREWITH - The ceramic heater comprises a heating resistor that includes opposing portions disposed side by side, a pair of lead members connected to ends of the heating resistor, and a ceramic base in which the heating resistor and the lead members are embedded, wherein a high heat conductivity member that has a heat conductivity higher than that of the ceramic base is disposed between the opposing portions in the ceramic base. | 11-18-2010 |
Ken Yamamoto, Tokyo JP
| Patent application number | Description | Published |
|---|---|---|
| 20100201899 | DISCHARGE DETECTION CIRCUIT, LIQUID CRYSTAL DRIVING DEVICE, LIQUID CRYSTAL DISPLAY DEVICE, AND DISCHARGE DETECTION METHOD - A discharge detection circuit has an electrostatic discharge detector that has at least one of a first detector detecting a positive voltage surge and outputting a first detection signal and a second detector detecting a negative voltage surge and outputting a second detection signal, and outputs a detection signal indicating whether the surge is generated, based on at least one of the first detection signal and the second detection signal, and an external output terminal that outputs the detection signal. | 08-12-2010 |
Ken Yamamoto, Osaka-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20080219875 | Magnetic drive vane pump - A magnet drive rotary vane pump has a casing with a pump cavity. A rotor carrying a plurality of vanes is disposed within the pump cavity to be rotatable about an eccentric axis with respect to the pump cavity for drawing the fluid into the pump cavity and expelling it out of the pump cavity. The rotor is configured to have a rotor magnet which is magnetically coupled to a stator magnet mounted on the casing outwardly of the pump cavity for driving the rotor. The rotor magnet is configured to have its major portion disposed in an overlapping relation with the stator magnet. Thus, the rotor magnet can be mechanically isolated from the stator magnet disposed outside of the casing to establish a sealless coupling therebetween for realizing leakage free pump. | 09-11-2008 |
| 20100139785 | COMPACT VALVE - A compact valve using a shape memory alloy comprises: a moving valve body that contacts an inner periphery of a guide pipe having an built-in orifice, is freely movable and has a sealing portion to seal the orifice; a biasing coil provided between the orifice and the moving valve body; and a wire formed of a shape memory alloy and held between a stationary electrode of the guide pipe and a moving electrode of the moving valve body. The orifice is sealed by moving the moving valve body due to transformation of the shape memory alloy by heating the wire. The moving valve body is enabled to be elastically deformable by providing a coil spring to reduce a stress, so that an overload to the moving valve body due to contraction of the wire is absorbed by elastic deformation of the moving valve body. Thereby, the overload to the shape memory alloy is reduced to prevent deterioration of repeatability of memorized shape, to increase durability and reliability of the valve. | 06-10-2010 |
Ken Yamamoto, Kawasaki-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100032380 | METHOD AND SYSTEM OF CONTROLLING LIQUID SURFACE LEVEL IN ION-EXCHANGE RESIN TOWER AND INTERFACE LEVEL SENSOR - A liquid surface level control method for an ion-exchange resin tower according to the present invention comprises steps of determining an operation signal (S | 02-11-2010 |
Ken Yamamoto, Kagoshima JP
| Patent application number | Description | Published |
|---|---|---|
| 20090295256 | Multilayer Piezoelectric Element and Injector Using the Same - In a multilayer piezoelectric element in which a plurality of piezoelectric layers and a plurality of metal layers are stacked alternately, the plurality of metal layers include a plurality of low-filled metal layers having a lower filling rate of metal composing the metal layers than oppositely disposed metal layers adjacent to each other in a stacking direction. In a multilayer piezoelectric element in which a plurality of piezoelectric layers and a plurality of metal layers are stacked alternately, the plurality of metal layers include a plurality of thin metal layers having a smaller thickness than oppositely disposed metal layers adjacent to each other in a stacking direction. In a multilayer piezoelectric element in which a plurality of piezoelectric layers and a plurality of metal layers composed mainly of an alloy are stacked alternately, the plurality of metal layers include a plurality of high-ratio metal layers having a higher ratio of a component constituting the alloy than oppositely disposed metal layers adjacent to each other in a stacking direction. | 12-03-2009 |
| 20100032503 | Multilayer Piezoelectric Element and Injector Using the Same - In a multilayer piezoelectric element comprising a plurality of piezoelectric layers and a plurality of metal layers which are alternately stacked one upon another, the metal layers includes a plurality of high resistance metal layers having a higher electrical resistance than adjacent metal layers on the both sides. The high resistance metal layers are regularly arranged so as to interpose a plurality of different metal layers other than the high resistance metal layers. In another multilayer piezoelectric element in which a plurality of piezoelectric layers and a plurality of metal layers are alternately stacked one upon another, at least one layer of the metal layers is formed by a plurality of partial metal layers disposed between the piezoelectric layers. | 02-11-2010 |
Ken Yamamoto, Kadoma-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20100015001 | Vane pump - A vane pump includes a casing and a rotary unit rotatably held within the casing. The rotary unit includes a base portion with radially outwardly opened slits extending radially with respect to a rotational axis of the rotary unit and vanes slidably fitted in the respective slits. An annular chamber is formed around the base portion within the casing and divided into a plurality of pump chambers by the vanes. Each of the pump chambers has a volume cyclically expanded and contracted during rotation of the rotary unit to discharge the fluid drawn into each of the pump chambers. The casing includes an inlet port through which to draw the fluid into the annular chamber. The inlet port is arranged to face a portion of the annular chamber extending between a middle position and a terminating position of an expanding section in which each of the pump chambers expands. | 01-21-2010 |
Ken Yamamoto, Osaka JP
| Patent application number | Description | Published |
|---|---|---|
| 20080219873 | Vane pump - A vane pump includes a rotor chamber; a rotor eccentrically accommodated in the rotor chamber; a plurality of vanes attached to the rotor, each vane having a leading end adapted to make sliding contact with an inner peripheral surface of the rotor chamber. The vane pump includes working compartments surrounded by inner surfaces of the rotor chamber, an outer peripheral surface of the rotor, and the vanes; an inlet port through which a working fluid is drawn into a working compartment; and an outlet port through which the working fluid is discharged from a working compartment. An engaging portion is formed in a peripheral end portion of a thrust surface of the rotor and an engaged portion with which the engaging portion engages in a non-contact state is formed in an inner surface region of the rotor chamber facing the thrust surface of the rotor in a non-contact state. | 09-11-2008 |
| 20090162232 | Vane pump - A vane pump includes slits formed in a base portion of a rotary unit rotating in a casing and extend radially from a rotation axis of a rotary unit to be opened outwardly in a radial direction, a vane received in each of the slits to be protruded from or retreated into the slit, an annular chamber formed around the base portion in the casing and pump rooms formed by defining the annular chamber by using the vanes. The vane pump is operated to discharge fluid sucked into an associated pump room by rotating the rotary unit and thereby periodically increasing or reducing volume of the pump rooms. The vane pump further includes a fluid force generating portion provided on at least one of the rotary unit and the casing to generate fluid force to the upper side in an axial direction of the rotation axis by rotation of the rotary unit. | 06-25-2009 |
| 20090241328 | ELECTRODE CAULKING APPARATUS - An electrode calking apparatus that enables to fix electrodes | 10-01-2009 |
Ken Yamamoto, Iwata JP
| Patent application number | Description | Published |
|---|---|---|
| 20090183370 | SEALED ROLLING BEARING - A sealed rolling bearing is proposed which makes it possible to reduce the torque loss while ensuring high sealing performance. Seal lips of seal members secured to the outer ring of the bearing at both ends thereof are in sliding contact with both ends of the outer periphery of the inner ring of the bearing. These portions of the inner ring that are in sliding contact with the seal lips are subjected to minute shot peening in which minute shots of molybdenum disulfide having a particle diameter of 20 to 200 micrometers are struck against these portions at a high speed of 50 meters per second. This decreases the friction torque attendant to sliding contact of the seal lips and makes it possible to decrease the torque loss of the bearing even if the contact pressure of the seal lips is increased sufficiently to ensure high sealing performance. | 07-23-2009 |
Ken Yamamoto, Saitama-Shi JP
| Patent application number | Description | Published |
|---|---|---|
| 20090160563 | SURFACE-MOUNT TYPE CRYSTAL OSCILLATOR - A surface-mount type crystal oscillator includes a container body with a recess, a first holding terminal and a second holding terminal provided in the recess, a crystal blank secured to the first and second holding terminals, and an IC chip including a first terminal and a second terminal on respective opposite sides of one end of the IC chip, the first and second terminals being used to electrically connect the amplification element within the IC chip to the crystal blank. In the recess, the first connection terminal is connected, by wire bonding, to one of a first circuit terminal connected to the first holding terminal and a second circuit terminal connected to the second holding terminal. The second connection terminal is connected, by wire bonding, to one of a third circuit terminal connected to the first holding terminal and a fourth circuit terminal connected to the second holding terminal. | 06-25-2009 |