4584 patents
Page 21 of 230
Utility
Electric blower, vacuum cleaner, and hand drying device
18 Jul 23
An electric blower includes a motor, a first rotor blade provided on one end side of the motor in an axial direction, a second rotor blade provided on another side of the motor opposite to the first rotor blade in the axial direction, and a first stator blade provided to face the first rotor blade.
Kazuchika Tsuchida, Naho Adachi
Filed: 19 Apr 17
Utility
Optical module
18 Jul 23
A metal stem includes a cylindrical portion in which an FPC inserting portion is formed, and a base standing upright from one plane of the cylindrical portion.
Mizuki Shirao, Seiki Nakamura, Kiyotomo Hasegawa
Filed: 1 Nov 21
Utility
Controller for internal combustion engine
18 Jul 23
To provide a controller for internal combustion engine which suppresses that estimation of the combustion state is performed based on the angle information on which the component due to the torsional vibration is superimposed, when the torsional vibration occurs in the crankshaft.
Tatsuhiko Takahashi, Yuhei Matsushima, Junichi Inoue, Toshikatsu Saito, Keiichi Arita, Kazuyo Kako
Filed: 21 Mar 22
Utility
Program providing device, program providing method, and program providing system
18 Jul 23
A server that is a program providing device includes: a provision processing unit that provides a program part constituting a control program being a program to be executed in a controller; an authentication unit that authenticates an operation simulation module being a program for simulatively performing operation in accordance with the program part on a basis of a result of verification on whether or not the operation simulation module can simulate operation of the controller to be performed by execution of the program part; and an operation checking unit that checks operation of the program part by using the authenticated operation simulation module.
Takayuki Yamaoka, Chisato Ushida, Kenji Mine, Hirokazu Kikuta
Filed: 14 Feb 20
Utility
Signal processing device
18 Jul 23
A signal processing device (10) uses first characteristic data detected from a sheet-like detection target by a first detection element (1) and second characteristic data detected from the detection target by a second detection element (2) and having (i) a characteristic that is different from a characteristic of the first characteristic data and (ii) a correlation with the first characteristic data.
Toru Aramaki, Masako Asamura, Miki Sugano
Filed: 8 Jan 21
Utility
Spring electrode for press-pack power semiconductor module
18 Jul 23
A spring electrode for a press-pack power semiconductor module includes a first electrode in contact with a power semiconductor chip, a second electrode arranged to face the first electrode, and a pressure pad which connects the first electrode and the second electrode and has flexibility in a normal direction of opposing surfaces of the first electrode and the second electrode.
Shigeto Fujita, Tetsuya Matsuda
Filed: 31 Aug 17
Utility
Estimation device and AC motor drive device
18 Jul 23
An estimation device includes a phase current determination unit, a time difference calculation unit, and an estimation unit.
Kenji Takahashi, Shinya Toyodome, Mitsuo Kashima, Tomohiro Kutsuki
Filed: 23 Aug 19
Utility
Drive device for AC motor, compressor drive device, and refrigeration cycle device
18 Jul 23
A drive device for an AC motor includes: an adaptive observation unit that adaptively estimates an angular velocity of a rotor of an AC motor; a speed control unit that determines a first torque command with which an angular velocity command matches an average value of an estimated angular velocity; a phase lead amount calculation unit that calculates, based on a disturbance frequency, a phase lead amount of a transfer function from a true angular velocity to a model deviation; a vibration suppression control unit that determines, based on a frequency of load torque pulsations, the model deviation, and the phase lead amount, a second torque command with which speed pulsations in the AC motor are suppressed; and a torque control unit that controls a torque of the AC motor based on the first torque command and the second torque command.
Kenji Takahashi, Yuki Taniyama, Hiroyuki Kamiko, Toshiyuki Kaitani
Filed: 14 Jan 20
Utility
Optical communication device
18 Jul 23
An ONU includes a communication unit, an abnormal light emission prevention unit, and a control unit that transmits a data signal and a transmission permission signal to the communication unit and transmits the transmission permission signal to the abnormal light emission prevention unit between a transmission start time and a transmission end time.
Yuji Yokohama
Filed: 2 Nov 21
Utility
Receiver
18 Jul 23
A receiver is configured to extract a clock signal superimposed on a detection signal of light propagated to determine whether or not SNR of the detection signal is lower than SNR at which the detection signal can be demodulated; compensate a signal value of the detection signal by using a filter coefficient and output a detection signal after signal value compensation; and calculate, as the filter coefficient, a filter coefficient in which a signal value of a detection signal output from the adaptive filter is a reference value when it is determined that there is no SNR degradation, and changes the filter coefficient to a stored filter coefficient when it is determined that SNR degradation occurs.
Keisuke Matsuda
Filed: 6 Jan 22
Utility
Isolation transformer, and power conversion device in which the isolation transformer is used
18 Jul 23
The isolation transformer includes two kinds of winding, a high voltage side winding and a low voltage side winding, and the high voltage side winding and the low voltage side winding are formed in winding layers, wherein the high voltage side winding includes windings formed in multiple winding layers, a winding layer having a different number of turns exists in one or more kinds of the two kinds of winding among the windings formed in the multiple winding layers, winding layers wherein current flows in the same direction are stacked in such a way as not to be neighboring, and at least one of winding layers having the greatest number of turns is disposed as a layer other than an outermost layer.
Hayato Tanabe
Filed: 19 Feb 21
Utility
Laser processing method and laser processing apparatus
11 Jul 23
A laser processing method for laser processing of a workpiece made of a base material and a fiber reinforced composite material containing fibers having a thermal conductivity and a processing threshold higher than physical properties of glass fibers.
Koji Funaoka, Masayuki Saiki, Takashi Inoue
Filed: 21 Sep 21
Utility
Semiconductor device and power conversion device
11 Jul 23
A semiconductor device in which occurrence of peeling between a filling member and a metal terminal is suppressed is obtained.
Akira Kosugi
Filed: 19 Feb 19
Utility
Power conversion device
11 Jul 23
In a power conversion device in which cell converters are connected in series, each cell converter includes: main circuit conductors connecting switching elements and a capacitor to each other; a bypass portion disposed between two external terminals connected to other cell converters; external output conductors connecting the external terminals and the main circuit conductors to each other; and bypass connection conductors connecting the external output conductors and the bypass portion to each other.
Kimiyuki Koyanagi, Masashi Shigemitsu
Filed: 1 Mar 19
Utility
Information processing apparatus, information processing system, non-transitory computer-readable medium, and information processing method
11 Jul 23
Provided are a request processing unit to send a first process distribution request to other information processing apparatuses via a communication I/F unit, the first process distribution request being a request for ordering execution of a first process on a first; and an order destination selecting unit to receive, via the communication I/F unit, as a response to the first process distribution request, a first estimated reply time calculated as the time required to receive the transfer of the first data and to reply a first process result obtained by executing the first process on the first data, to use the first estimated reply time to select an order destination to which the execution of the first process is to be ordered by the plurality of information processing apparatuses, and to order the execution of the first process on the first data to the order destination via the communication interface unit.
Ayako Nagata, Junji Sukeno, Masahide Koike, Susumu Iino, Keiichi Tsuda, Kiyoyasu Maruyama
Filed: 5 Feb 19
Utility
Three-level power conversion device
11 Jul 23
A bridge circuit includes a first leg and a second leg arranged in parallel between the first node and the third node.
Takeshi Amimoto, Naoki Nishio
Filed: 4 Jul 19
Utility
Communication system, base station device and communication terminal device
11 Jul 23
A high-speed communication system etc. are provided in New Radio (NR) and LTE.
Tadahiro Shimoda, Mitsuru Mochizuki
Filed: 8 Dec 21
Utility
Semiconductor device and semiconductor apparatus
11 Jul 23
A semiconductor device includes; a semiconductor substrate; an emitter electrode provided on the semiconductor substrate; a gate electrode provided on the semiconductor substrate; a drift layer of a first conduction type provided in the semiconductor substrate; a source layer of the first conduction type provided on an upper surface side of the semiconductor substrate; a base layer of a second conduction type provided on the upper surface side of the semiconductor substrate; a collector electrode provided below the semiconductor substrate; and a two-part dummy active trench including, at an upper part, an upper dummy part not connected with the gate electrode and including, at a lower part, a lower active part connected with the gate electrode and covered by an insulating film, in a trench of the semiconductor substrate, wherein a longitudinal length of the lower active part is larger than a width of the lower active part.
Kazuya Konishi, Koichi Nishi, Akihiko Furukawa
Filed: 28 Jun 21
Utility
Semiconductor laser machine
11 Jul 23
A semiconductor laser machine includes a semiconductor laser element including a first end face that emits a laser beam and a second end face that is opposite the first end face; a heat sink; and a sub-mount securing the semiconductor laser element to the heat sink.
Tomohiro Kyoto, Daisuke Morita, Kimio Shigihara, Keisuke Furuta
Filed: 12 Aug 20
Utility
Friction compensation device, and robot control device
4 Jul 23
A friction compensation device of the present disclosure includes a drive torque calculation unit that calculates output torque of a transmission mechanism from a motor's position, velocity, and acceleration, the transmission mechanism being connected to a motor via a shaft to transmit the driving force of the motor, and a friction estimate value calculation unit that calculates a friction estimate value that is an estimate value of a friction force on the shaft.
Kiyoshi Maekawa, Akio Saito, Yuma Isobe
Filed: 26 Mar 20