Patents by Inventor Kazuo Isomura
Kazuo Isomura 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: 11584402Abstract: A railcar bogie includes a bogie frame including a cross beam and supports, the supports disposed at respective car width direction end portions of the cross beam. There are a plurality of axle boxes to accommodate a plurality of bearings supporting a pair of axles, a plate spring extending in a car longitudinal direction and supported by a pair of the axle boxes which are away from each other in the car longitudinal direction among the plurality of axle boxes. The plate spring supports the cross beam while being pressed by the corresponding support from above such that the pressing member is separable from the plate spring. Elastic walls are at both respective sides of the supports in the car longitudinal direction and sandwiched between a lower surface of the bogie frame and an upper surface of the plate spring so as to be compressed.Type: GrantFiled: June 24, 2020Date of Patent: February 21, 2023Assignee: KAWASAKI RAILCAR MANUFACTURING CO., LTD.Inventors: Tomohiro Narita, Kazuo Isomura, Takaya Ono
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Patent number: 11479275Abstract: A bolster beam of a railcar bogie includes a bolster beam main body in which a pair of auxiliary air chambers respectively communicating with a pair of air springs are formed; and a stopper structure projecting upward from a car width direction middle portion of the bolster beam main body. An upper wall of the bolster beam main body includes a middle upper wall portion at which the stopper structure portion is provided; and a pair of outside upper wall portions adjacently located at both respective car width direction sides of the middle upper wall portion and joined to the middle upper wall portion. The pair of outside upper wall portions include respective upward bent portions that are located at a car width direction middle side and bent upward toward the stopper structure portion.Type: GrantFiled: December 9, 2019Date of Patent: October 25, 2022Assignee: KAWASAKI RAILCAR MANUFACTURING CO., LTD.Inventors: Tomohiro Narita, Kazuo Isomura
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Patent number: 11110942Abstract: A railway vehicle stopper includes a first rigid member, a second rigid member, a rubber elastic body, a third rigid member, an abutting member, and a communication passage. The second rigid member is arranged opposed to the truck frame or the vehicle body with an interval. The rubber elastic body elastically couples the supporting portion of the first rigid member to the second rigid member. The third rigid member is mounted inside the supporting portion of the first rigid member to form an air chamber with the second rigid member. The abutting member is coupled to at least one of mutually opposed surfaces of the second rigid member and the third rigid member. The communication passage is provided on one or both of the first rigid member and the third rigid member to communicate the air chamber with an outside.Type: GrantFiled: February 15, 2019Date of Patent: September 7, 2021Assignees: SUMITOMO RIKO COMPANY LIMITED, KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Motohiro Hatano, Kento Tamaki, Satoshi Ikeda, Kazuo Isomura, Takanori Tojo
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Patent number: 10875551Abstract: A railcar bogie includes a plate spring supported by a pair of axle boxes arranged away from each other in a car longitudinal direction, the plate spring supporting a cross beam while being pressed by a pressing member of a bogie frame from above such that the pressing member is separable from the plate spring, at least a lower surface of the plate spring containing resin. The lower surface of the plate spring includes an inclined surface inclined with respect to a horizontal direction when viewed from a car width direction. The bogie frame includes at least one lifting supporting portion, the at least one lifting supporting portion including a supporting surface, the supporting surface being opposed to the inclined surface of the plate spring from below with a gap and inclined along the inclined surface of the plate spring.Type: GrantFiled: January 23, 2018Date of Patent: December 29, 2020Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Fumikazu Kounoike, Yukitaka Taga, Takaya Ono, Yoshihiro Tamura, Kazuo Isomura
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Publication number: 20200317233Abstract: A railcar bogie includes a bogie frame including a cross beam and supports, the supports disposed at respective car width direction end portions of the cross beam. There are a plurality of axle boxes to accommodate a plurality of bearings supporting a pair of axles, a plate spring extending in a car longitudinal direction and supported by a pair of the axle boxes which are away from each other in the car longitudinal direction among the plurality of axle boxes. The plate spring supports the cross beam while being pressed by the corresponding support from above such that the pressing member is separable from the plate spring. Elastic walls are at both respective sides of the supports in the car longitudinal direction and sandwiched between a lower surface of the bogie frame and an upper surface of the plate spring so as to be compressed.Type: ApplicationFiled: June 24, 2020Publication date: October 8, 2020Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Tomohiro NARITA, Kazuo ISOMURA, Takaya ONO
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Patent number: 10793167Abstract: Invention includes bogie frame and single link type traction device coupling frame and carbody and transmitting force to carbody, force acting on bogie frame. Single link type traction device includes single link member, receiving seat, and first fastening member. Link member couples center pin of carbody and bogie frame and extends in car longitudinal direction. Receiving seat is provided at fixation target object constituted by center pin or bogie frame, and link member is fixed to receiving seat. First fastening member includes bolt and nut and fixes an end portion of link member to receiving seat. Bolt is inserted into end portion of link member and receiving seat from one side in car longitudinal direction, and nut is threadedly engaged with bolt from other side in car longitudinal direction. Receiving seat includes through hole into which bolt is inserted and nut accommodating space communicating with through hole and accommodating nut.Type: GrantFiled: May 24, 2016Date of Patent: October 6, 2020Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Kazuo Isomura, Takanori Tojo, Masahiro Sakahira, Satoshi Ikeda, Tomohide Maeba, Naoki Hikosaka, Tomohiro Narita
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Publication number: 20200108844Abstract: A bolster beam of a railcar bogie includes a bolster beam main body in which a pair of auxiliary air chambers respectively communicating with a pair of air springs are formed; and a stopper structure projecting upward from a car width direction middle portion of the bolster beam main body. An upper wall of the bolster beam main body includes a middle upper wall portion at which the stopper structure portion is provided; and a pair of outside upper wall portions adjacently located at both respective car width direction sides of the middle upper wall portion and joined to the middle upper wall portion. The pair of outside upper wall portions include respective upward bent portions that are located at a car width direction middle side and bent upward toward the stopper structure portion.Type: ApplicationFiled: December 9, 2019Publication date: April 9, 2020Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Tomohiro NARITA, Kazuo ISOMURA
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Publication number: 20200047778Abstract: A railcar bogie includes a plate spring supported by a pair of axle boxes arranged away from each other in a car longitudinal direction, the plate spring supporting a cross beam while being pressed by a pressing member of a bogie frame from above such that the pressing member is separable from the plate spring, at least a lower surface of the plate spring containing resin. The lower surface of the plate spring includes an inclined surface inclined with respect to a horizontal direction when viewed from a car width direction. The bogie frame includes at least one lifting supporting portion, the at least one lifting supporting portion including a supporting surface, the supporting surface being opposed to the inclined surface of the plate spring from below with a gap and inclined along the inclined surface of the plate spring.Type: ApplicationFiled: January 23, 2018Publication date: February 13, 2020Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Fumikazu KOUNOIKE, Yukitaka TAGA, Takaya ONO, Yoshihiro TAMURA, Kazuo ISOMURA
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Patent number: 10464581Abstract: A carbody support device of a railway vehicle, including support mechanisms installed between a front bogie and a carbody and between a rear bogie and the carbody in a traveling direction, and supporting the carbody against the respective bogies. The support mechanisms regulate both the front bogie and the rear bogie inclining in the same vehicle width direction with respect to the carbody when the railway vehicle travels through a curve, while the support mechanisms permit the front bogie and the rear bogie inclining in different vehicle width directions.Type: GrantFiled: February 9, 2018Date of Patent: November 5, 2019Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Yoshi Sato, Yukitaka Taga, Shunichi Nakao, Kazuo Isomura, Makoto Tamaki, Junichi Shirakawa, Koichi Murata
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Patent number: 10464582Abstract: A carbody support device of a railway vehicle, including support mechanisms installed between a front bogie and a carbody and between a rear bogie and the carbody in a traveling direction, and supporting the carbody against the respective bogies. The support mechanisms regulate both the front bogie and the rear bogie inclining in the same vehicle width direction with respect to the carbody when the railway vehicle travels through a curve, while the support mechanisms permit the front bogie and the rear bogie inclining in different vehicle width directions.Type: GrantFiled: February 9, 2018Date of Patent: November 5, 2019Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Yoshi Sato, Yukitaka Taga, Shunichi Nakao, Kazuo Isomura, Makoto Tamaki, Junichi Shirakawa, Koichi Murata
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Publication number: 20190300026Abstract: A railway vehicle stopper includes a first rigid member, a second rigid member, a rubber elastic body, a third rigid member, an abutting member, and a communication passage. The second rigid member is arranged opposed to the truck frame or the vehicle body with an interval. The rubber elastic body elastically couples the supporting portion of the first rigid member to the second rigid member. The third rigid member is mounted inside the supporting portion of the first rigid member to form an air chamber with the second rigid member. The abutting member is coupled to at least one of mutually opposed surfaces of the second rigid member and the third rigid member. The communication passage is provided on one or both of the first rigid member and the third rigid member to communicate the air chamber with an outside.Type: ApplicationFiled: February 15, 2019Publication date: October 3, 2019Applicants: Sumitomo Riko Company Limited, KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Motohiro HATANO, Kento TAMAKI, Satoshi IKEDA, Kazuo ISOMURA, Takanori TOJO
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Patent number: 10315671Abstract: A restricting member is configured to restrict abnormal rising of a carbody when an air spring expands by a predetermined amount or more. The restricting member includes: a base portion; a contact portion provided at the base portion and configured to be brought into contact with a lower surface of a bogie frame when the air spring expands by the predetermined amount or more; and a temporary fastening portion formed at the base portion. The temporary fastening portion is configured to be attachable to and detachable from a temporary fastened portion formed at a side surface of a center pin extending downward from a carbody.Type: GrantFiled: November 14, 2016Date of Patent: June 11, 2019Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Masahiro Sakahira, Kazuo Isomura, Takanori Tojo, Satoshi Ikeda, Tomohide Maeba, Naoki Hikosaka, Tomohiro Narita
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Patent number: 10138972Abstract: Each of an assembly for air spring, an air spring, and a carriage for vehicle includes: a first supporting member; a second supporting member arranged to be spaced away from the first supporting member in a main load direction; and an adjusting member connected to the first supporting member and the second supporting member in a plane crossing the main load direction, the adjusting member having anisotropy in elastic property in the plane crossing the main load direction.Type: GrantFiled: October 6, 2014Date of Patent: November 27, 2018Assignees: SUMITOMO ELECTRIC INDUSTRIES, LTD., KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hirokazu Haraguchi, Jun Yoshida, Kazuo Isomura, Takanori Tojo, Masahiro Sakahira, Jun Shirasaki, Tomohide Maeba, Naoki Hikosaka
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Patent number: 10112628Abstract: A first bearing casing accommodates a first spherical bearing while restricting a displacement of the first spherical bearing in an axial direction, and a second bearing casing accommodates a second spherical bearing while allowing a displacement of the second spherical bearing in the axial direction. The second bearing casing includes a protruding portion interposed between each of second oil sealing members and the second spherical bearing so as to be spaced apart from the second spherical bearing in the axial direction.Type: GrantFiled: March 2, 2015Date of Patent: October 30, 2018Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Kazuo Isomura, Takanori Tojo, Masahiro Sakahira, Jun Shirasaki, Tomohide Maeba, Naoki Hikosaka
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Publication number: 20180201281Abstract: Invention includes bogie frame and single link type traction device coupling frame and carbody and transmitting force to carbody, force acting on bogie frame. Single link type traction device includes single link member, receiving seat, and first fastening member. Link member couples center pin of carbody and bogie frame and extends in car longitudinal direction. Receiving seat is provided at fixation target object constituted by center pin or bogie frame, and link member is fixed to receiving seat. First fastening member includes bolt and nut and fixes an end portion of link member to receiving seat. Bolt is inserted into end portion of link member and receiving seat from one side in car longitudinal direction, and nut is threadedly engaged with bolt from other side in car longitudinal direction. Receiving seat includes through hole into which bolt is inserted and nut accommodating space communicating with through hole and accommodating nut.Type: ApplicationFiled: May 24, 2016Publication date: July 19, 2018Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Kazuo ISOMURA, Takanori TOJO, Masahiro SAKAHIRA, Satoshi IKEDA, Tomohide MAEBA, Naoki HIKOSAKA, Tomohiro NARITA
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Publication number: 20180162419Abstract: A carbody support device of a railway vehicle, including support mechanisms installed between a front bogie and a carbody and between a rear bogie and the carbody in a traveling direction, and supporting the carbody against the respective bogies. The support mechanisms regulate both the front bogie and the rear bogie inclining in the same vehicle width direction with respect to the carbody when the railway vehicle travels through a curve, while the support mechanisms permit the front bogie and the rear bogie inclining in different vehicle width directions.Type: ApplicationFiled: February 9, 2018Publication date: June 14, 2018Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Yoshi SATO, Yukitaka TAGA, Shunichi NAKAO, Kazuo ISOMURA, Makoto TAMAKI, Junichi SHIRAKAWA, Koichi MURATA
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Publication number: 20180162418Abstract: A carbody support device of a railway vehicle, including support mechanisms installed between a front bogie and a carbody and between a rear bogie and the carbody in a traveling direction, and supporting the carbody against the respective bogies. The support mechanisms regulate both the front bogie and the rear bogie inclining in the same vehicle width direction with respect to the carbody when the railway vehicle travels through a curve, while the support mechanisms permit the front bogie and the rear bogie inclining in different vehicle width directions.Type: ApplicationFiled: February 9, 2018Publication date: June 14, 2018Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Yoshi SATO, Yukitaka TAGA, Shunichi NAKAO, Kazuo ISOMURA, Makoto TAMAKI, Junichi SHIRAKAWA, Koichi MURATA
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Patent number: 9975562Abstract: A railcar includes: a carbody; a bogie constituting member including an interface plate provided at a lower portion of the carbody, an air spring, and a bogie; an automatic level controlling valve configured to maintain a height of the spring within a certain range; a first attaching portion provided on a side surface of the plate, the valve being detachably attached to the side surface of the plate by the first attaching portion; and attaching means provided at the lower portion of the carbody, the valve being detachably attached to the lower portion of the carbody by the attaching means, the bogie constituting member being separable from the carbody in a state where the valve is attached to the side surface of the plate through the first attaching portion or a state where the valve is attached to the lower portion of the carbody through the attaching means.Type: GrantFiled: November 30, 2015Date of Patent: May 22, 2018Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Masahiro Sakahira, Mitsuru Yokoyama, Kazuo Isomura, Takanori Tojo, Satoshi Ikeda, Tomohide Maeba, Naoki Hikosaka, Tomohiro Narita
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Patent number: 9932050Abstract: A carbody support device of a railway vehicle, including support mechanisms installed between a front bogie and a carbody and between a rear bogie and the carbody in a traveling direction, and supporting the carbody against the respective bogies. The support mechanisms regulate both the front bogie and the rear bogie inclining in the same vehicle width direction with respect to the carbody when the railway vehicle travels through a curve, while the support mechanisms permit the front bogie and the rear bogie inclining in different vehicle width directions.Type: GrantFiled: July 10, 2013Date of Patent: April 3, 2018Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Yoshi Sato, Yukitaka Taga, Shunichi Nakao, Kazuo Isomura, Makoto Tamaki, Junichi Shirakawa, Koichi Murata
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Publication number: 20170151963Abstract: A railcar includes: a carbody; a bogie constituting member including an interface plate provided at a lower portion of the carbody, an air spring, and a bogie; an automatic level controlling valve configured to maintain a height of the spring within a certain range; a first attaching portion provided on a side surface of the plate, the valve being detachably attached to the side surface of the plate by the first attaching portion; and attaching means provided at the lower portion of the carbody, the valve being detachably attached to the lower portion of the carbody by the attaching means, the bogie constituting member being separable from the carbody in a state where the valve is attached to the side surface of the plate through the first attaching portion or a state where the valve is attached to the lower portion of the carbody through the attaching means.Type: ApplicationFiled: November 30, 2015Publication date: June 1, 2017Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Masahiro SAKAHIRA, Mitsuru YOKOYAMA, Kazuo ISOMURA, Takanori TOJO, Satoshi IKEDA, Tomohide MAEBA, Naoki HIKOSAKA, Tomohiro NARITA