Patents by Inventor Kazunori Ishihara
Kazunori Ishihara 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: 11964604Abstract: When a tilt in a right-and-left direction occurs in a cargo bed (9) being raised due to imbalance of excavated materials, the tilt is detected as a roll angle (?R), and it is determined whether the absolute value (|?R|) of the roll angle is not less than an imbalance determination value (?2) (S4). When the absolute value is not less than the imbalance determination value (?2) (Yes in S4) and the roll angle (?R) is positive (the cargo bed (9) is rising to the right) (Yes in S8), an oil supply amount (VL) to a hoist cylinder (11) on the left side is increased, and an oil supply amount (VR) to a hoist cylinder (12) on the right side is decreased (S9). When the roll angle (?R) is negative (the cargo bed (9) is rising to the left) (No in S8), the oil supply amount (VL) on the left side is decreased, and the oil supply amount (VR) on the right side is increased (S10).Type: GrantFiled: March 16, 2020Date of Patent: April 23, 2024Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Tomoya Ishii, Kazunori Ishihara, Takeshi Iwaki
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Patent number: 11649816Abstract: An engine (12) drives a variable capacity-type hydraulic pump (16), discharged hydraulic oil is selectively supplied to a cooling fan (19) and a hoist cylinder (11) in accordance with switching of a selection valve (17), thereby controlling the same on the basis of each target value. A pump discharge pressure (Pp) of the hydraulic oil discharged from the hydraulic pump (16) and a motor supply pressure (Pm) of the hydraulic oil supplied to a hydraulic motor (18) via the selection valve (17) are detected by sensors (27, 28) and are compared with pressure determination values stored in advance as a pump discharge pressure (Pp) and an actuator supply pressure (Pm) generated when the target value is achieved. Presence/absence of abnormality in the hydraulic actuator control device (15) is determined on the basis of a result of the comparison, and when abnormality is determined to have occurred, control is performed to minimize the capacity of the hydraulic pump (16).Type: GrantFiled: November 8, 2019Date of Patent: May 16, 2023Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Takaaki Tanaka, Kazunori Ishihara, Jun Ikeda, Juri Shimizu
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Publication number: 20220281311Abstract: Provided is a technique for improving the cooling efficiency of a vehicle heat exchange system configured to cool a cooling liquid discharged from each of a plurality of heat sources.Type: ApplicationFiled: February 19, 2020Publication date: September 8, 2022Inventors: Kazunori ISHIHARA, Jun IKEDA, Takaaki TANAKA, Yoshifumi NABESHIMA, Hideaki IIJIMA, Tsukasa AKIYAMA
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Publication number: 20220235758Abstract: An engine (12) drives a variable capacity-type hydraulic pump (16), discharged hydraulic oil is selectively supplied to a cooling fan (19) and a hoist cylinder (11) in accordance with switching of a selection valve (17), thereby controlling the same on the basis of each target value. A pump discharge pressure (Pp) of the hydraulic oil discharged from the hydraulic pump (16) and a motor supply pressure (Pm) of the hydraulic oil supplied to a hydraulic motor (18) via the selection valve (17) are detected by sensors (27, 28) and are compared with pressure determination values stored in advance as a pump discharge pressure (Pp) and an actuator supply pressure (Pm) generated when the target value is achieved. Presence/absence of abnormality in the hydraulic actuator control device (15) is determined on the basis of a result of the comparison, and when abnormality is determined to have occurred, control is performed to minimize the capacity of the hydraulic pump (16).Type: ApplicationFiled: November 8, 2019Publication date: July 28, 2022Inventors: Takaaki TANAKA, Kazunori ISHIHARA, Jun IKEDA, Juri SHIMIZU
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Publication number: 20210253014Abstract: When a tilt in a right-and-left direction occurs in a cargo bed (9) being raised due to imbalance of excavated materials, the tilt is detected as a roll angle (?R), and it is determined whether the absolute value (|?R|) of the roll angle is not less than an imbalance determination value (?2) (S4). When the absolute value is not less than the imbalance determination value (?2) (Yes in S4) and the roll angle (?R) is positive (the cargo bed (9) is rising to the right) (Yes in S8), an oil supply amount (VL) to a hoist cylinder (11) on the left side is increased, and an oil supply amount (VR) to a hoist cylinder (12) on the right side is decreased (S9). When the roll angle (?R) is negative (the cargo bed (9) is rising to the left) (No in S8), the oil supply amount (VL) on the left side is decreased, and the oil supply amount (VR) on the right side is increased (S10).Type: ApplicationFiled: March 16, 2020Publication date: August 19, 2021Inventors: Tomoya ISHII, Kazunori ISHIHARA, Takeshi IWAKI
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Publication number: 20200101878Abstract: A vehicle seat includes a pressure-receiving member disposed rearwardly of an occupant between left and right side frames, and a rocking mechanism configured to cause a left side or a right side of the pressure-receiving member to move frontward and rearward. The rocking mechanism includes a first link member provided pivotally, a second link member provided pivotally on the first link member and pivotally connected to the pressure-receiving member, and an actuator configured to cause the first link member and the second link member to pivot.Type: ApplicationFiled: December 2, 2019Publication date: April 2, 2020Inventors: Shinji SUGIYAMA, Kazunori ISHIHARA, Shuichi SHIMIZU
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Patent number: 10493877Abstract: A vehicle seat includes a pressure-receiving member disposed rearwardly of an occupant between left and right side frames, and a rocking mechanism configured to cause a left side or a right side of the pressure-receiving member to move frontward and rearward. The rocking mechanism includes a first link member provided pivotally, a second link member provided pivotally on the first link member and pivotally connected to the pressure-receiving member, and an actuator configured to cause the first link member and the second link member to pivot.Type: GrantFiled: August 7, 2017Date of Patent: December 3, 2019Assignee: TS TECH CO., LTD.Inventors: Shinji Sugiyama, Kazunori Ishihara, Shuichi Shimizu
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Patent number: 10449881Abstract: A headrest is provided including a movable unit that can be shifted to multiple positions in the front-rear direction in a normal mode. A headrest includes first and second headrest pillars, a stationary unit disposed between the first and second headrest pillars, a movable unit movable apart from or close to the stationary unit toward a front or rear direction, an X linkage connecting the stationary unit to the movable unit and including an inside linkage segment and an outside linkage segment rotatably connected each other at a central connecting intersection, and a front-rear locking mechanism including a lock receiver and a locking component engageable with the lock receiver, to lock or unlock the movable unit movable relative to the stationary unit toward the front or rear direction.Type: GrantFiled: September 12, 2017Date of Patent: October 22, 2019Assignee: TS TECH CO., LTD.Inventor: Kazunori Ishihara
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Patent number: 10427573Abstract: A headrest includes a right headrest pillar and a left headrest pillar apart from the right headrest pillar, a fixed frame disposed on the headrest pillars, a movable frame coupled to the fixed frame with a movable mechanism, and a front-back locking mechanism locking and unlocking a front-back movement of the movable frame relative to the fixed frame. The movable frame is movable in the front-back direction relative to the fixed frame. The front-back locking mechanism includes a plurality of engaged members disposed outside the right and left headrest pillars in a width direction thereof and a locking member having a plurality of engaging portions to be respectively engaged with the engaged members to lock the movement of the movable frame.Type: GrantFiled: December 17, 2014Date of Patent: October 1, 2019Assignee: TS TECH CO., LTD.Inventors: Kazunori Ishihara, Kazuhiro Mishiba, Yuji Nakano, Hiroshi Izawa
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Patent number: 10414237Abstract: A dump truck pitching control system that can improve the ride quality of a vehicle body and the drive stability during traveling is provided. The present invention includes: a pitching state amount detection section 194 that detects a state amount of the pitching movement of the vehicle body 10; a spring characteristics calculation section 197 that calculates spring characteristics of suspension cylinders 30, based on detection results of stroke sensors 306, pressure sensors 307, and temperature sensors 308; a pitching target amount calculation section 192 that calculates a target amount of the pitching movement of the vehicle body 10, according to the spring characteristics calculated by the spring characteristics calculation section 197; and a torque correction value calculation section 193 that calculates a torque correction value required to correct the pitching amount, according to the spring characteristics calculated by the spring characteristics calculation section 197.Type: GrantFiled: September 15, 2016Date of Patent: September 17, 2019Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Takeshi Iwaki, Atsushi Kitaguchi, Kazunori Ishihara, Jun Ikeda, Yoshifumi Nabeshima
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Patent number: 10406944Abstract: A torsion bar configured to assist height adjustment of a seat cushion frame is housed in a hollow coupling pipe positioned between side frames. The inside of the coupling pipe has first and second engagement portions configured to engage and hold one end portion of the torsion bar in an extension direction thereof. The first engagement portion is engaged with a first engaged portion of the one end portion. The second engagement portion is engaged with a second engaged portion of the one end portion in the same position as a position of engagement between the first engagement portion and the first engaged portion in the seat width direction or in a position on the inner side from the position of engagement in the seat width direction, the second engaged portion being positioned closer to one end of a biasing member in the extension direction than the first engaged portion.Type: GrantFiled: July 29, 2016Date of Patent: September 10, 2019Assignee: TS Tech Co., Ltd.Inventors: Kazunori Ishihara, Takayoshi Katori
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Publication number: 20190023098Abstract: A dump truck pitching control system that can improve the ride quality of a vehicle body and the drive stability during traveling is provided. The present invention includes: a pitching state amount detection section 194 that detects a state amount of the pitching movement of the vehicle body 10; a spring characteristics calculation section 197 that calculates spring characteristics of suspension cylinders 30, based on detection results of stroke sensors 306, pressure sensors 307, and temperature sensors 308; a pitching target amount calculation section 192 that calculates a target amount of the pitching movement of the vehicle body 10, according to the spring characteristics calculated by the spring characteristics calculation section 197; and a torque correction value calculation section 193 that calculates a torque correction value required to correct the pitching amount, according to the spring characteristics calculated by the spring characteristics calculation section 197.Type: ApplicationFiled: September 15, 2016Publication date: January 24, 2019Inventors: Takeshi IWAKI, Atsushi KITAGUCHI, Kazunori ISHIHARA, Jun IKEDA, Yoshifumi NABESHIMA
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Publication number: 20180222356Abstract: A torsion bar configured to assist height adjustment of a seat cushion frame is housed in a hollow coupling pipe positioned between side frames. The inside of the coupling pipe has first and second engagement portions configured to engage and hold one end portion of the torsion bar in an extension direction thereof. The first engagement portion is engaged with a first engaged portion of the one end portion. The second engagement portion is engaged with a second engaged portion of the one end portion in the same position as a position of engagement between the first engagement portion and the first engaged portion in the seat width direction or in a position on the inner side from the position of engagement in the seat width direction, the second engaged portion being positioned closer to one end of a biasing member in the extension direction than the first engaged portion.Type: ApplicationFiled: July 29, 2016Publication date: August 9, 2018Inventors: Kazunori ISHIHARA, Takayoshi KATORI
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Patent number: 10023089Abstract: The objective of the present invention is to provide a headrest that can have increased comfort and safety. This headrest is provided with: an affixed-side member provided to a headrest pillar; a mobile-side member that is joined to the affixed-side member with a mobile mechanism therebetween and that can move in the front-back direction with respect to the affixed-side member; and a front-back locking mechanism that has an engaged section and a lock member that engages the engaged section, and that locks and unlocks the movement of the mobile-side member in the front-back direction. Also, the mobile-side member has a front-side cover for supporting a head. Furthermore, the engaged section is attached to the back surface of the front-side cover.Type: GrantFiled: October 12, 2017Date of Patent: July 17, 2018Assignee: TS TECH CO., LTD.Inventor: Kazunori Ishihara
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Publication number: 20180029511Abstract: The objective of the present invention is to provide a headrest that can have increased comfort and safety. This headrest is provided with: an affixed-side member provided to a headrest pillar; a mobile-side member that is joined to the affixed-side member with a mobile mechanism therebetween and that can move in the front-back direction with respect to the affixed-side member; and a front-back locking mechanism that has an engaged section and a lock member that engages the engaged section, and that locks and unlocks the movement of the mobile-side member in the front-back direction. Also, the mobile-side member has a front-side cover for supporting a head. Furthermore, the engaged section is attached to the back surface of the front-side cover.Type: ApplicationFiled: October 12, 2017Publication date: February 1, 2018Applicant: TS TECH CO., LTD.Inventor: Kazunori ISHIHARA
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Publication number: 20180001803Abstract: A headrest is provided including a movable unit that can be shifted to multiple positions in the front-rear direction in a normal mode. A headrest includes first and second headrest pillars, a stationary unit disposed between the first and second headrest pillars, a movable unit movable apart from or close to the stationary unit toward a front or rear direction, an X linkage connecting the stationary unit to the movable unit and including an inside linkage segment and an outside linkage segment rotatably connected each other at a central connecting intersection, and a front-rear locking mechanism including a lock receiver and a locking component engageable with the lock receiver, to lock or unlock the movable unit movable relative to the stationary unit toward the front or rear direction.Type: ApplicationFiled: September 12, 2017Publication date: January 4, 2018Applicant: TS TECH CO., LTD.Inventor: Kazunori ISHIHARA
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Publication number: 20170334322Abstract: A vehicle seat includes a pressure-receiving member disposed rearwardly of an occupant between left and right side frames, and a rocking mechanism configured to cause a left side or a right side of the pressure-receiving member to move frontward and rearward. The rocking mechanism includes a first link member provided pivotally, a second link member provided pivotally on the first link member and pivotally connected to the pressure-receiving member, and an actuator configured to cause the first link member and the second link member to pivot.Type: ApplicationFiled: August 7, 2017Publication date: November 23, 2017Inventors: Shinji SUGIYAMA, Kazunori ISHIHARA, Shuichi SHIMIZU
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Patent number: 9815392Abstract: A headrest is provided that can have increased comfort and safety. The headrest can include: an affixed-side member provided to a headrest pillar; a mobile-side member that is joined to the affixed-side member with a mobile mechanism therebetween and that can move in the front-back direction with respect to the affixed-side member; and a front-back locking mechanism that has an engaged section and a lock member that engages the engaged section, and that locks and unlocks the movement of the mobile-side member in the front-back direction. Also, the mobile-side member has a front-side cover for supporting a head. Furthermore, the engaged section is attached to the back surface of the front-side cover.Type: GrantFiled: December 28, 2012Date of Patent: November 14, 2017Assignee: TS TECH CO., LTD.Inventor: Kazunori Ishihara
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Patent number: 9789795Abstract: A headrest is provided including a movable unit that can be shifted to multiple positions in the front-rear direction in a normal mode. A headrest includes first and second headrest pillars, a stationary unit disposed between the first and second headrest pillars, a movable unit movable apart from or close to the stationary unit toward a front or rear direction, an X linkage connecting the stationary unit to the movable unit and including an inside linkage segment and an outside linkage segment rotatably connected each other at a central connecting intersection, and a front-rear locking mechanism including a lock receiver and a locking component engageable with the lock receiver, to lock or unlock the movable unit movable relative to the stationary unit toward the front or rear direction.Type: GrantFiled: September 26, 2012Date of Patent: October 17, 2017Assignee: TS TECH CO., LTD.Inventor: Kazunori Ishihara
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Patent number: 9751434Abstract: A vehicle seat includes a pressure-receiving member disposed rearwardly of an occupant between left and right side frames, and a rocking mechanism configured to cause a left side or a right side of the pressure-receiving member to move frontward and rearward. The rocking mechanism includes a first link member provided pivotally, a second link member provided pivotally on the first link member and pivotally connected to the pressure-receiving member, and an actuator configured to cause the first link member and the second link member to pivot.Type: GrantFiled: June 10, 2015Date of Patent: September 5, 2017Assignee: TS TECH CO., LTD.Inventors: Shinji Sugiyama, Kazunori Ishihara, Shuichi Shimizu