Patents by Inventor Seiji Kamada
Seiji Kamada has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9792737Abstract: An operation state management system for a construction machine includes a management apparatus configured to manage an operation state of the construction machine by communicating with the construction machine and a construction machine including a cumulative value storage device configured to store a cumulative value in which an amount of operation of the construction machine is accumulated and have an adjustment function to the stored cumulative value, an adjustment existence determining unit configured to determine whether the cumulative value stored in the cumulative value storage device has been adjusted, and a communication terminal apparatus configured to communicate with the management apparatus and transmit adjustment information indicating that at least the cumulative value has been adjusted to the management apparatus when the adjustment existence determining unit has determined that the adjustment has been performed.Type: GrantFiled: September 30, 2014Date of Patent: October 17, 2017Assignee: Komatsu Ltd.Inventors: Tsuyoshi Tanaka, Mitsuhiro Shimazu, Shinya Komori, Seiji Kamada
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Publication number: 20160093120Abstract: An operation state management system for a construction machine includes a management apparatus configured to manage an operation state of the construction machine by communicating with the construction machine and a construction machine including a cumulative value storage device configured to store a cumulative value in which an amount of operation of the construction machine is accumulated and have an adjustment function to the stored cumulative value, an adjustment existence determining unit configured to determine whether the cumulative value stored in the cumulative value storage device has been adjusted, and a communication terminal apparatus configured to communicate with the management apparatus and transmit adjustment information indicating that at least the cumulative value has been adjusted to the management apparatus when the adjustment existence determining unit has determined that the adjustment has been performed.Type: ApplicationFiled: September 30, 2014Publication date: March 31, 2016Inventors: Tsuyoshi Tanaka, Mitsuhiro Shimazu, Shinya Komori, Seiji Kamada
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Patent number: 9284720Abstract: There are included an eco guidance determination unit that detects the occurrence of fuel-wasting operation during operation of a construction machine, and a guidance display control unit that stores guidance for energy saving corresponding to energy wasting operation; that, when fuel-wasting operation occurs, displays corresponding guidance for energy saving; and that also displays the corresponding guidance for energy saving at a predetermined timing after occurrence of the energy wasting operation.Type: GrantFiled: September 5, 2011Date of Patent: March 15, 2016Assignee: KOMATSU LTD.Inventors: Seiji Kamada, Kentarou Tajima
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Publication number: 20150318840Abstract: An electric-power meter device includes a sensor which detects an electric energy and which outputs an analog signal with 50 Hz to 60 Hz, and a microcomputer which includes an analog-to-digital converter which, based on a delta-sigma modulation scheme, converts the input analog signal provided from the sensor to a digital signal based on a required sampling rate to output the digital signal, a central processing unit that performs data processing based on the digital signal converted by the analog-to-digital converter, and a timer unit that outputs a trigger signal in a cycle corresponding to the required sampling rate. The analog-to-digital converter includes a delta-sigma modulator and a decimation filter.Type: ApplicationFiled: July 13, 2015Publication date: November 5, 2015Inventors: Yusuke EDO, Seiji KAMADA
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Patent number: 9124247Abstract: To variably change the filter characteristic of a decimation filter in accordance with a sampling rate. A decimation filter 13 in a semiconductor device 1 sequentially inputs a signal sampled at a predetermined sampling rate fos, and calculates, for each input signal that is input within a predetermined period (a period for M+2N), a filter coefficient Cj for performing predetermined filtering processing in response to a trigger signal TR continuously applied, and furthermore sequentially multiplies the input signal by the calculated filter coefficient, accumulates a multiplication value within the predetermined period, and sequentially outputs the result. The predetermined period is made variable in accordance with a time interval at which the trigger signal is applied.Type: GrantFiled: July 17, 2012Date of Patent: September 1, 2015Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Yusuke Edo, Seiji Kamada
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Patent number: 8959893Abstract: A guidance output device, which outputs guidance for improving fuel economy when an energy wasting operation is detected in a construction machine that is provided with an exhaust gas purifying device for an internal combustion engine, includes a regeneration process determining unit that determines whether a regeneration process is in progress in the exhaust gas purifying device. It also includes a guidance output restriction unit that restricts an output of the guidance for energy saving by the guidance output unit when the regeneration process determining unit determines that the regeneration process is in progress in the exhaust gas purifying device.Type: GrantFiled: November 4, 2011Date of Patent: February 24, 2015Assignee: Komatsu Ltd.Inventors: Kentarou Tajima, Seiji Kamada, Koichi Yamashita
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Publication number: 20130066934Abstract: To variably change the filter characteristic of a decimation filter in accordance with a sampling rate. A decimation filter 13 in a semiconductor device 1 sequentially inputs a signal sampled at a predetermined sampling rate fos, and calculates, for each input signal that is input within a predetermined period (a period for M+2N), a filter coefficient Cj for performing predetermined filtering processing in response to a trigger signal TR continuously applied, and furthermore sequentially multiplies the input signal by the calculated filter coefficient, accumulates a multiplication value within the predetermined period, and sequentially outputs the result. The predetermined period is made variable in accordance with a time interval at which the trigger signal is applied.Type: ApplicationFiled: July 17, 2012Publication date: March 14, 2013Applicant: Renesas Electronics CorporationInventors: Yusuke EDO, Seiji KAMADA
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Publication number: 20130006495Abstract: A guidance output device, which outputs guidance for improving fuel economy when an energy wasting operation is detected in a construction machine that is provided with an exhaust gas purifying device for an internal combustion engine, includes a regeneration process determining unit that determines whether a regeneration process is in progress in the exhaust gas purifying device. It also includes a guidance output restriction unit that restricts an output of the guidance for energy saving by the guidance output unit when the regeneration process determining unit determines that the regeneration process is in progress in the exhaust gas purifying device.Type: ApplicationFiled: November 4, 2011Publication date: January 3, 2013Applicant: KOMATSU LTD.Inventors: Kentarou Tajima, Seiji Kamada, Koichi Yamashita
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Publication number: 20120330500Abstract: There are included an eco guidance determination unit that detects the occurrence of fuel-wasting operation during operation of a construction machine, and a guidance display control unit that stores guidance for energy saving corresponding to energy wasting operation; that, when fuel-wasting operation occurs, displays corresponding guidance for energy saving; and that also displays the corresponding guidance for energy saving at a predetermined timing after occurrence of the energy wasting operation.Type: ApplicationFiled: September 5, 2011Publication date: December 27, 2012Applicant: KOMATSU LTD.Inventors: Seiji Kamada, Kentarou Tajima
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Patent number: 7665484Abstract: A pulsation absorber is provided in a fluid channel formed in a body of a fluid coupling. Fluid flows through the fluid channel in an assembled state. The pulsation absorber is arranged to deform in a same direction as the fluid to flow in the fluid channel pulsates. The pulsation absorber thereby absorbs pulsation of the fluid.Type: GrantFiled: November 16, 2007Date of Patent: February 23, 2010Assignee: Nissan Motor Co., Ltd.Inventors: Seiji Kamada, Hiroshi Kumagai
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Patent number: 7607414Abstract: A member for an internal combustion engine, such as a piston, a valve and a fuel injection valve. The member includes a substrate. A carbon-based coating film is formed on the substrate to cover at least a part of a region of the substrate to which region fuel for the internal combustion engine is contactable. The carbon-based coating film contains fluorine and has a thickness of 10 ?m or less.Type: GrantFiled: September 13, 2005Date of Patent: October 27, 2009Assignee: Nissan Motor Co., Ltd.Inventors: Seiji Kamada, Hiroshi Kumagai, Midori Kondou, Kenji Kikuchi, Takumaru Sagawa, Yutaka Mabuchi, Takahiro Nakahigashi
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Publication number: 20080070815Abstract: A low friction sliding mechanism employed in an internal combustion engine of an automotive vehicle. The low friction sliding mechanism includes first and second sliding members which are in slidable contact with each other. At least one of the first and second sliding members has a sliding surface portion whose at least a part is formed of a resinous material containing hydrophilic fine particle. Additionally, a lubricant exists between the first and second sliding members and includes a friction modifier containing at least one of organic oxygen-containing compound and aliphatic amine-based compound.Type: ApplicationFiled: September 18, 2007Publication date: March 20, 2008Inventors: Seiji Kamada, Takafumi Ueno, Tomihito Hashimoto
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Publication number: 20080067805Abstract: A pulsation absorber is provided in a fluid channel formed in a body of a fluid coupling. Fluid flows through the fluid channel in an assembled state. The pulsation absorber is arranged to deform in a same direction as the fluid to flow in the fluid channel pulsates. The pulsation absorber thereby absorbs pulsation of the fluid.Type: ApplicationFiled: November 16, 2007Publication date: March 20, 2008Inventors: Seiji Kamada, Hiroshi Kumagai
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Patent number: 7283810Abstract: Communications are performed between a mobile unit and a terminal device. The mobile unit is provided with a communication device that is capable of communicating with the terminal device if it is connected electrically with a power supply. When an engine key switch signal is off, the electrical connection between the power supply and the communication device is turned on and off intermittently.Type: GrantFiled: March 17, 2000Date of Patent: October 16, 2007Assignee: Komatsu Ltd.Inventors: Shuji Arakawa, Seiichi Mizui, Seiji Kamada, Yoshio Asayama, Noriaki Abe
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Patent number: 7149530Abstract: A device for presenting information on a mobile includes mobiles and terminals interconnected intercommunicably through communication means, wherein a terminal transmits, to the mobile concerned, mobile identification data on a mobile to which a request for mobile information is to be made, request content identification data representing the contents of mobile information to be requested, and terminal identification data on the terminal being the presentee to which the requested contents is to be presented. The mobile acquires mobile information requested by the terminal and sends it to the terminal being the presentee. The stored contents in storage means is updated each time operation of input for requesting information from a mobile is made through the terminal and the mobile acquires new mobile information. The updated stored contents is transmitted to the terminal being the requester when the terminal requests the updated stored contents.Type: GrantFiled: March 17, 2000Date of Patent: December 12, 2006Assignee: Komatsu Ltd.Inventors: Shuji Arakawa, Seiichi Mizui, Seiji Kamada, Yoshio Asayama, Noriaki Abe
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Patent number: 7110728Abstract: An object of the present invention is to avoid communication congestion by varying the transmission times of a plurality of mobile bodies while maintaining standardization in the software to be installed in the plurality of mobile bodies. A detection is made in a plurality of vehicles 31, 32, 33 . . . that a specific event has occurred in a vehicle, for example a communication terminal 56 has been installed, or in other words power from a power source 63 has been applied to the communication terminal 56. The power application time is then measured by a calendar and timer in the interior of the vehicle. An individual automatic transmission time for each vehicle is then set with the power application time of the vehicle as a reference.Type: GrantFiled: January 23, 2003Date of Patent: September 19, 2006Assignee: Komatsu Ltd.Inventors: Seiichi Mizui, Seiji Kamada
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Publication number: 20060054127Abstract: A member for an internal combustion engine, such as a piston, a valve and a fuel injection valve. The member includes a substrate. A carbon-based coating film is formed on the substrate to cover at least a part of a region of the substrate to which region fuel for the internal combustion engine is contactable. The carbon-based coating film contains fluorine and has a thickness of 10 ?m or less.Type: ApplicationFiled: September 13, 2005Publication date: March 16, 2006Inventors: Seiji Kamada, Hiroshi Kumagai, Midori Kondou, Kenji Kikuchi, Takumaru Sagawa, Yutaka Mabuchi, Takahiro Nakahigashi
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Publication number: 20050263198Abstract: A pulsation absorber is provided in a fluid channel formed in a body of a fluid coupling. Fluid flows through the fluid channel in an assembled state. The pulsation absorber is arranged to deform in a same direction as the fluid to flow in the fluid channel pulsates. The pulsation absorber thereby absorbs pulsation of the fluid.Type: ApplicationFiled: June 1, 2005Publication date: December 1, 2005Inventors: Seiji Kamada, Hiroshi Kumagai
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Patent number: 6856879Abstract: An object of the present invention is to ensure that the amount of time a construction machine has been operated by each operator can be managed. A further object is to ensure that an administrator can learn without delay, in real time, and accurately that a service person has performed services on a construction machine, and to ensure that work instructions are imparted to a service person, and service person performance management and labor management are performed easily and accurately. Another object is to ensure that the attachment situation of a construction machine can be learned accurately and in real time such that customer requests can be dealt with promptly. Another object is to ensure that communication messages can be displayed on the limited space of a monitoring panel display screen together with information which is necessary for driving.Type: GrantFiled: January 24, 2003Date of Patent: February 15, 2005Assignee: Komatsu Ltd.Inventors: Shuji Arakawa, Seiji Kamada
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Publication number: 20040198254Abstract: An object of the present invention is to avoid communication congestion by varying the transmission times of a plurality of mobile bodies while maintaining standardization in the software to be installed in the plurality of mobile bodies. A detection is made in a plurality of vehicles 31, 32, 33 . . . that a specific event has occurred in a vehicle, for example a communication terminal 56 has been installed, or in other words power from a power source 63 has been applied to the communication terminal 56. The power application time is then measured by a calendar and timer in the interior of the vehicle. An individual automatic transmission time for each vehicle is then set with the power application time of the vehicle as a reference.Type: ApplicationFiled: January 23, 2003Publication date: October 7, 2004Inventors: Seiichi Mizui, Seiji Kamada