Patents by Inventor Takaaki Irie
Takaaki Irie 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: 8485452Abstract: The first object of the present invention is to provide a derailment prevention guard which can be easily shunted outside the range of the ballast tamping work, the rail grinding work and the rail maintenance work, and has no problem on safety.Type: GrantFiled: January 31, 2011Date of Patent: July 16, 2013Assignees: Central Japan Railway Company, Yamato Trackwork System Co., Ltd.Inventors: Masaki Seki, Takashi Kachi, Tomomi Funada, Takaaki Irie, Katsunari Konishi, Tetsuya Hanazaki
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Patent number: 8418932Abstract: A wheel guard apparatus capable of preventing a wheel from derailing and preventing a vehicle from seriously deviating from a track even if the wheel has derailed includes a fixed portion fixed to a railroad tie located between main line rails; a movable portion supported by a rotating shaft provided on the fixed portion and extending in a horizontal direction and configured to be rotatable around the rotating shaft toward a track center side; and a guard rail located at a position separated from the rotating shaft of the movable portion and held to extend in parallel with the main line rail. The guard rail includes an outer stopper portion configured to prevent the wheel from derailing toward an inner side of the main line rail and an inner stopper portion configured to prevent a derailed vehicle from deviating to an outer side of a track.Type: GrantFiled: November 28, 2008Date of Patent: April 16, 2013Assignees: Central Japan Railway Company, Yamato Trackwork System Co., Ltd.Inventors: Masaki Seki, Kazuhiro Miwa, Tomomi Funada, Hironari Muramatsu, Takaaki Irie, Yoshio Morikawa, Katsunari Konishi, Tetsuya Hanazaki
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Patent number: 8302877Abstract: The first object of the present invention is to provide a derailment prevention guard which can be easily shunted outside the range of the ballast tamping work, the rail grinding work and the rail maintenance work, and has no problem on safety.Type: GrantFiled: January 31, 2011Date of Patent: November 6, 2012Assignees: Central Japan Railway Company, Yamato Trackwork System Co., Ltd.Inventors: Masaki Seki, Takashi Kachi, Tomomi Funada, Takaaki Irie, Katsunari Konishi, Tetsuya Hanazaki
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Publication number: 20110121088Abstract: The first object of the present invention is to provide a derailment prevention guard which can be easily shunted outside the range of the ballast tamping work, the rail grinding work and the rail maintenance work, and has no problem on safety.Type: ApplicationFiled: January 31, 2011Publication date: May 26, 2011Applicants: CENTRAL JAPAN RAILWAY COMPANY, YAMATO TRACKWORK SYSTEM CO., LTD.Inventors: Masaki Seki, Takashi Kachi, Tomomi Funada, Takaaki Irie, Katsunari Konishi, Tetsuya Hanazaki
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Publication number: 20110121089Abstract: The first object of the present invention is to provide a derailment prevention guard which can be easily shunted outside the range of the ballast tamping work, the rail grinding work and the rail maintenance work, and has no problem on safety.Type: ApplicationFiled: January 31, 2011Publication date: May 26, 2011Applicants: CENTRAL JAPAN RAILWAY COMPANY, YAMATO TRACKWORK SYSTEM CO., LTDInventors: Masaki Seki, Takashi Kachi, Tomomi Funada, Takaaki Irie, Katsunari Konishi, Tetsuya Hanazaki
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Publication number: 20110049254Abstract: A wheel guard apparatus capable of preventing a wheel from derailing and preventing a vehicle from seriously deviating from a track even if the wheel has derailed includes a fixed portion fixed to a railroad tie located between main line rails; a movable portion supported by a rotating shaft provided on the fixed portion and extending in a horizontal direction and configured to be rotatable around the rotating shaft toward a track center side; and a guard rail located at a position separated from the rotating shaft of the movable portion and held to extend in parallel with the main line rail. The guard rail includes an outer stopper portion configured to prevent the wheel from derailing toward an inner side of the main line rail and an inner stopper portion configured to prevent a derailed vehicle from deviating to an outer side of a track.Type: ApplicationFiled: November 28, 2008Publication date: March 3, 2011Applicants: CENTRAL JAPAN RAILWAY COMPANY, YAMATO TRACKWORK SYSTEM CO., LTD.Inventors: Masaki Seki, Kazuhiro Miwa, Tomomi Funada, Hironari Muramatsu, Takaaki Irie, Yoshio Morikawa, Katsunari Konishi, Tetsuya Hanazaki
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Patent number: 7891577Abstract: A derailment prevention guard includes a guard member (3) installed within a gauge and a support member (6) fixed to a sleeper (4) or a concrete slab track. The guard member (3) engages a hold member (8) moveable around an axis (7) supported by the support member (6) as turning center between a main rail (1) and the inside of the gauge on the sleeper. The support member (6) engages the hold member (8) by bolt (12) through turning the hold member (8) toward the main rail (1) around the central axis (7) as turning center on the sleeper (4), and the guard member (3) can be shunted inward by turning the hold member (8) toward the inside of the gauge around the central axis (7) as turning center on the sleeper (4) after loosening the bolt (12).Type: GrantFiled: May 11, 2006Date of Patent: February 22, 2011Assignees: Central Japan Railway Company, Yamato Trackwork System Co., Ltd.Inventors: Masaki Seki, Takashi Kachi, Tomomi Funada, Takaaki Irie, Katsunari Konishi, Tetsuya Hanazaki
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Publication number: 20090200389Abstract: A derailment prevention guard includes a guard member (3) installed within a gauge and a support member (6) fixed to a sleeper (4) or a concrete slab track. The guard member (3) engages a hold member (8) which can turn moveable around an axis (7) supported by the support member (6) as turning center between a main rail (1) and the inside of the gauge on the sleeper. The support member (6) engages the hold member (8) by bolt (12) through turning the hold member (8) toward the main rail (1) around the central axis (7) as turning center on the sleeper (4), and the guard member (3) can be shunted inward by turning the hold member (8) toward the inside of the gauge around the central axis (7) as turning center on the sleeper (4) after loosening the bolt (12).Type: ApplicationFiled: May 11, 2006Publication date: August 13, 2009Applicants: CENTRAL JAPAN RAILWAY COMPANY, YAMATO TRACKWORK SYSTEM CO., LTD.Inventors: Masaki Seki, Takashi Kachi, Tomomi Funada, Takaaki Irie, Katsunari Konishi, Tetsuya Hanazaki
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Patent number: 6257494Abstract: A base structure of a turnout, which has high durability and is capable of reliably preventing lateral displacement, is disclosed. The base structure of the turnout comprises a set of steel sleepers 1A, which is installed on the track bed and can be filled with ballast. The set of steel sleepers 1A comprises a plurality of steel sleepers 2a, 2b, 2c having a substantially same configuration and different lengths, which are arranged in parallel to each other at predetermined intervals with the length varying stepwise from the shortest steel sleeper 2a to the longest steel sleeper 2c, with end faces on both sides of the longitudinal direction of all steel sleepers are capped with sleeper tie members 3, 4, and 5 or 6, and a portion, or all, of the sleeper tie members are embedded in the track bed.Type: GrantFiled: June 30, 1999Date of Patent: July 10, 2001Assignee: Yamato Kogyo Co., Ltd.Inventors: Kenzo Tokuoka, Masafumi Demura, Mitsuki Ego, Yoshihiro Fukui, Takaaki Irie, Tomokazu Yano, Katsuniri Konishi, Motoyoshi Maruyama
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Patent number: 6138958Abstract: A spring rail frog includes a movable wing rail, a fixed wing rail and a nose rail. The movable wing rail is provided with a bendable portion and a non-bendable portion. The bendable portion can include any or all of a reduced width base portion, a reduced width head portion and an increased width web portion. The height of the movable wing rail can also be smaller in height than the height of the nose rail. A fixing plate can also be provided between a base plate and the movable wing rail to adjust the relative height of the movable wing rail and the nose rail. The movable wing rail extends beyond a spacer block disposed between the movable wing rail and the fixed wing rail. The movable wing rail extends away from the nose rail a predetermined distance for connection to the lead rail.Type: GrantFiled: July 21, 1998Date of Patent: October 31, 2000Assignee: Yamato Kogyo Co., Ltd.Inventors: Takaaki Irie, Katunari Konishi
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Patent number: 5820702Abstract: A nose type rail member for crossing member applied to a turnout or wayside switch system on the ground for a train and the like, is made of high carbon steel material containing 0.70 to 0.82 wt. % of carbon. The rail member is constructed by a pair of rail parts, which has a concave at a side of the middle support part. A backing plate is made of the same as the rail member or a steel material having a less carbon content than that of the rail member and is holden by a pair of the opposite concaves. A pair of the head portions and the base portions at a side thereof are joined by means of electron beam welding and the joined rail member is subjected to S.Q. heat processing, thereby at least a wheel tread of the rail member becomes a homogeneous and fine pearlite structure.Type: GrantFiled: October 29, 1996Date of Patent: October 13, 1998Assignee: Yamato Kogyo Co., Ltd.Inventors: Takaaki Irie, Hisashi Takahata
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Patent number: 5782437Abstract: A spring rail frog is disclosed that includes a movable wing rail, a fixed wing rail and a nose rail. The movable wing rail is provided with a bendable portion and a non-bendable portion. The bendable portion can include any or all of a reduced width base portion, a reduced width head portion and an increased width web portion. The height of the movable wing rail can also be smaller in height than the height of the nose rail. A fixing plate can also be provided between a base plate and the movable wing rail to adjust the relative height of the movable wing rail and the nose rail.Type: GrantFiled: December 2, 1996Date of Patent: July 21, 1998Assignee: Yamato Kogyo Co., Ltd.Inventors: Takaaki Irie, Katunari Konishi
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Patent number: 5704570Abstract: A nose type rail member for a crossing member applied to a turnout or wayside switch system on the ground for a train and the like, is made of high carbon steel material containing 0.70 to 0.82 wt. % of carbon. The rail member is constructed by a pair of rail parts, which have a concave at a side of the middle support part. A backing plate is made of the same material as the rail member, or a steel material having a less carbon content than that of the rail member, and is held by a pair of the opposite concaves. A pair of the head portions and the base portions at a side thereof are joined by means of electron beam welding, and the joined rail member is subjected to S.Q. heat processing; whereby at least a wheel tread of the rail member becomes a homogeneous and fine pearlite structure.Type: GrantFiled: December 16, 1993Date of Patent: January 6, 1998Assignee: Yamato Kogyo Co., Ltd.Inventors: Takaaki Irie, Hisashi Takahata