Patents by Inventor Seiryo Konakai
Seiryo Konakai 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: 11231082Abstract: The hydraulic damping device includes: a cylinder storing fluid; a piston configured to form a channel through which the fluid flows along with relative movement of a rod relative to the cylinder in a specific direction; a valve having elasticity, the valve being configured to open and close the channel in the piston; a movement permitting part configured to permit the valve to move between a contact position and a spaced position, the contact position being a position where the valve contacts the piston, the spaced position being a position where the valve is spaced from the piston; a restricting part configured to restrict bending of the valve at the spaced position; and a pressing part having elasticity, the pressing part being configured to press the valve against the piston.Type: GrantFiled: May 10, 2017Date of Patent: January 25, 2022Assignee: Hitachi Astemo, Ltd.Inventors: Gota Nakano, Kazunari Maeda, Hiroshi Endo, Seiryo Konakai
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Patent number: 11199238Abstract: The hydraulic damping device includes: a cylinder storing fluid; a piston configured to form a channel through which the fluid flows along with relative movement of a rod relative to the cylinder in a specific direction; a valve having elasticity, the valve being configured to open and close the channel in the piston; a movement permitting part configured to permit the valve to move between a contact position and a spaced position, the contact position being a position where the valve contacts the piston, the spaced position being a position where the valve is spaced from the piston; a restricting part configured to restrict bending of the valve at the spaced position; and an imparting part having elasticity, the imparting part being configured to impart, to the valve, a load that is uneven in a circumferential direction of the valve and directed toward the piston.Type: GrantFiled: May 10, 2017Date of Patent: December 14, 2021Assignee: Showa CorporationInventors: Gota Nakano, Kazunari Maeda, Hiroshi Endo, Seiryo Konakai
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Patent number: 11162554Abstract: The hydraulic damping device includes: a cylinder storing fluid; a piston configured to form a channel through which the fluid flows along with relative movement of a rod relative to the cylinder in a specific direction; a valve having elasticity, the valve being configured to open and close the channel in the piston; a movement permitting part configured to permit the valve to move between a contact position and a spaced position, the contact position being a position where the valve contacts the piston, the spaced position being a position where the valve is spaced from the piston; a restricting part configured to restrict bending of the valve at the spaced position; and an imparting part having elasticity, the imparting part being configured to impart, to the valve, a load that is uneven in a circumferential direction of the valve and directed toward the piston.Type: GrantFiled: May 10, 2017Date of Patent: November 2, 2021Assignee: Showa CorporationInventors: Gota Nakano, Kazunari Maeda, Hiroshi Endo, Seiryo Konakai
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Publication number: 20200080613Abstract: The hydraulic damping device includes: a cylinder storing fluid; a piston configured to form a channel through which the fluid flows along with relative movement of a rod relative to the cylinder in a specific direction; a valve having elasticity, the valve being configured to open and close the channel in the piston; a movement permitting part configured to permit the valve to move between a contact position and a spaced position, the contact position being a position where the valve contacts the piston, the spaced position being a position where the valve is spaced from the piston; a restricting part configured to restrict bending of the valve at the spaced position; and a pressing part having elasticity, the pressing part being configured to press the valve against the piston.Type: ApplicationFiled: May 10, 2017Publication date: March 12, 2020Applicant: Showa CorporationInventors: Gota NAKANO, Kazunari MAEDA, Hiroshi ENDO, Seiryo KONAKAI
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Patent number: 10564071Abstract: Provided is an examination method for a damping force variable mechanism, the examination method including: an operation step of operating a damper in a state in which the damper is installed in a vehicle, the damper being provided with a damping force variable mechanism that changes a damping force according to an input current (an example of a signal); and a detection step of detecting an induction current (an example of an output from the vehicle) from the damping force variable mechanism of the damper installed in the vehicle, wherein a detection device that performs the operation of the detection step is provided. Thus, the damping force variable mechanism of a pressure damping device can be examined in a state in which the damping force variable mechanism is installed in the vehicle.Type: GrantFiled: February 2, 2015Date of Patent: February 18, 2020Assignees: Showa Corporation, Honda Motor Co., Ltd.Inventors: Seiryo Konakai, Ken Issiki, Ryoma Kanda, Yukihiro Orimoto, Koichi Shibusawa, Tomohiro Yamazaki
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Publication number: 20190390731Abstract: The hydraulic damping device includes: a cylinder storing fluid; a piston configured to form a channel through which the fluid flows along with relative movement of a rod relative to the cylinder in a specific direction; a valve having elasticity, the valve being configured to open and close the channel in the piston; a movement permitting part configured to permit the valve to move between a contact position and a spaced position, the contact position being a position where the valve contacts the piston, the spaced position being a position where the valve is spaced from the piston; a restricting part configured to restrict bending of the valve at the spaced position; and an imparting part having elasticity, the imparting part being configured to impart, to the valve, a load that is uneven in a circumferential direction of the valve and directed toward the piston.Type: ApplicationFiled: May 10, 2017Publication date: December 26, 2019Applicant: Showa CorporationInventors: Gota NAKANO, Kazunari MAEDA, Hiroshi ENDO, Seiryo KONAKAI
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Patent number: 10076941Abstract: The hydraulic shock absorber includes a cylinder containing a fluid, a damper case positioned outside the cylinder to form a reserving chamber, a piston housed inside the cylinder, a piston rod supporting the piston, a rod guide covering one end of the cylinder, and a guide bushing provided with a through hole through which the piston rod penetrates. The rod guide has an outer circumferential groove formed by spacing apart at least a part of the rod guide from the cylinder in a circumferential direction of the cylinder for allowing the fluid to flow from inside of the cylinder to the reserving chamber, and has an inner circumferential groove for supplying the fluid into an inner circumferential gap between an inner circumferential surface of the guide bushing and an outer circumferential surface of the piston rod as the fluid flows through the outer circumferential groove.Type: GrantFiled: December 18, 2015Date of Patent: September 18, 2018Assignee: SHOWA CORPORATIONInventors: Seiryo Konakai, Satomi Hojo
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Publication number: 20170199103Abstract: Provided is an examination method for a damping force variable mechanism, the examination method including: an operation step of operating a damper in a state in which the damper is installed in a vehicle, the damper being provided with a damping force variable mechanism that changes a damping force according to an input current (an example of a signal); and a detection step of detecting an induction current (an example of an output from the vehicle) from the damping force variable mechanism of the damper installed in the vehicle, wherein a detection device that performs the operation of the detection step is provided. Thus, the damping force variable mechanism of a pressure damping device can be examined in a state in which the damping force variable mechanism is installed in the vehicle.Type: ApplicationFiled: February 2, 2015Publication date: July 13, 2017Applicants: Showa Corporation, Honda Motor Co., Ltd.Inventors: Seiryo KONAKAI, Ken ISSIKI, Ryoma KANDA, Yukihiro ORIMOTO, Koichi SHIBUSAWA, Tomohiro YAMAZAKI
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Patent number: 9441698Abstract: A hydraulic shock absorbing apparatus includes: an inner tube; and an outer tube that is placed outside the inner tube, in which a space is defined between an outer circumferential surface of the inner tube and an inner circumferential surface of the outer tube, and a protruding portion protruding from the outer circumferential surface of the inner tube toward the outer tube or a protruding portion protruding from the inner circumferential surface of the outer tube toward the inner tube is provided in the space, and the protruding portion is formed over an entire circumference of the outer circumferential surface of the inner tube or the inner circumferential surface of the outer tube, and has a waveform when viewed from a direction crossing the outer circumferential surface or the inner circumferential surface.Type: GrantFiled: August 28, 2013Date of Patent: September 13, 2016Assignee: SHOWA CORPORATIONInventors: Tatsuro Suzuki, Seiryo Konakai, Mototsugu Yamanaka, Yuichi Enomoto, Takahiro Miura, Kunio Shibasaki
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Patent number: 9388877Abstract: A pressure shock absorbing apparatus includes: a first cylinder; a second cylinder that is placed outside the first cylinder to form a liquid storage unit; a partitioning member that is disposed in such a manner as to be movable in an axial direction inside the first cylinder to partition a space inside the first cylinder; a throttle mechanism that is disposed in a side portion of the second cylinder, and includes a throttle unit that throttles a flow path cross section of a liquid to discharge the liquid taken in from the first cylinder toward the liquid storage unit while passing the liquid through the throttle unit; and a suppression unit that is held by the throttle mechanism at a liquid discharge point between the throttle mechanism and the liquid storage unit to suppress air bubbles in the liquid in the liquid storage unit.Type: GrantFiled: August 28, 2013Date of Patent: July 12, 2016Assignee: SHOWA CORPORATIONInventors: Seiryo Konakai, Kunio Shibasaki, Takahiro Miura, Tetsuya Shirotsuka
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Publication number: 20160101662Abstract: The hydraulic shock absorber includes a cylinder containing a fluid, a damper case positioned outside the cylinder to form a reserving chamber, a piston housed inside the cylinder, a piston rod supporting the piston, a rod guide covering one end of the cylinder, and a guide bushing provided with a through hole through which the piston rod penetrates. The rod guide has an outer circumferential groove formed by spacing apart at least a part of the rod guide from the cylinder in a circumferential direction of the cylinder for allowing the fluid to flow from inside of the cylinder to the reserving chamber, and has an inner circumferential groove for supplying the fluid into an inner circumferential gap between an inner circumferential surface of the guide bushing and an outer circumferential surface of the piston rod as the fluid flows through the outer circumferential groove.Type: ApplicationFiled: December 18, 2015Publication date: April 14, 2016Applicant: Showa CorporationInventors: Seiryo KONAKAI, Satomi HOJO
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Publication number: 20140291089Abstract: A pressure shock absorbing apparatus includes: a first cylinder; a second cylinder that is placed outside the first cylinder to form a liquid storage unit; a partitioning member that is disposed in such a manner as to be movable in an axial direction inside the first cylinder to partition a space inside the first cylinder; a throttle mechanism that is disposed in a side portion of the second cylinder, and includes a throttle unit that throttles a flow path cross section of a liquid to discharge the liquid taken in from the first cylinder toward the liquid storage unit while passing the liquid through the throttle unit; and a suppression unit that is held by the throttle mechanism at a liquid discharge point between the throttle mechanism and the liquid storage unit to suppress air bubbles in the liquid in the liquid storage unit.Type: ApplicationFiled: August 28, 2013Publication date: October 2, 2014Applicant: SHOWA CORPORATIONInventors: Seiryo Konakai, Kunio Shibasaki, Takahiro Miura, Tetsuya Shirotsuka
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Publication number: 20140291086Abstract: A hydraulic shock absorbing apparatus includes: an inner tube; and an outer tube that is placed outside the inner tube, in which a space is defined between an outer circumferential surface of the inner tube and an inner circumferential surface of the outer tube, and a protruding portion protruding from the outer circumferential surface of the inner tube toward the outer tube or a protruding portion protruding from the inner circumferential surface of the outer tube toward the inner tube is provided in the space, and the protruding portion is formed over an entire circumference of the outer circumferential surface of the inner tube or the inner circumferential surface of the outer tube, and has a waveform when viewed from a direction crossing the outer circumferential surface or the inner circumferential surface.Type: ApplicationFiled: August 28, 2013Publication date: October 2, 2014Applicant: SHOWA CORPORATIONInventors: Tatsuro SUZUKI, Seiryo KONAKAI, Mototsugu YAMANAKA, Yuichi ENOMOTO, Takahiro MIURA, Kunio SHIBASAKI
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Publication number: 20090084647Abstract: In a damping force adjusting structure of a hydraulic shock absorber, a blow valve blowing an oil liquid in a rod side chamber to a back pressure chamber is provided in a back pressure introduction path introducing the oil liquid in the rod side chamber to the back pressure chamber, and a blow valve has a first pressure receiving portion capable of receiving the pressure of the rod side chamber before and after the valve opening, and a second pressure receiving portion capable of receiving the pressure of the rod side chamber after the valve opening.Type: ApplicationFiled: March 13, 2008Publication date: April 2, 2009Inventors: Noriaki Maneyama, Takashi Tsukahara, Seiryo Konakai
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Publication number: 20090078517Abstract: In a damping force adjusting structure of a hydraulic shock absorber, a blow valve blowing an oil liquid in a pressurized piston side chamber to a rod side chamber is provided in a bypass path communicating the rod side chamber and the piston side chamber while bypassing a damping valve, and the blow valve has a first pressure receiving portion which can receive the pressure of the piston side chamber before and after the valve opening, and a second pressure receiving portion which can receive the pressure of the piston side chamber after the valve opening.Type: ApplicationFiled: March 13, 2008Publication date: March 26, 2009Inventors: Noriaki Maneyama, Takashi Tsukahara, Seiryo Konakai