Patents by Inventor Masayuki Akita
Masayuki Akita 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: 10933920Abstract: A work vehicle including: a vehicle body frame; a prime mover part located on a front or rear part of the vehicle body frame; a bonnet configured to open and close by swinging, and covering the prime mover part; and an assist unit configured to assist the bonnet to operate to open. A lateral end portion of the vehicle body frame is provided with a first linkage part with which the assist unit is linked. A lateral end portion of a lower end part of the bonnet, which is located closer to an end cover than the first linkage part is, is provided with a second linkage part with which the assist unit is linked. The assist unit is provided with an expansion/contraction mechanism biased so as to expand, and is located laterally outside the prime mover part and spans the first linkage part and the second linkage part.Type: GrantFiled: May 29, 2019Date of Patent: March 2, 2021Assignee: Kubota CorporationInventors: Takeshi Komorida, Koichiro Matsumoto, Masaki Takaoka, Arisa Kimura, Tasuku Teraoka, Azusa Furihata, Tomohisa Yamamoto, Toshiki Kanai, Nobuyuki Yamashita, Masayuki Akita, Takashi Kumashiro, Ryo Matsumoto, Hiroki Nagai, Tatsuki Kago, Akihito Mihara
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Patent number: 10480156Abstract: A work vehicle includes a riding-type traveling vehicle body and a hydraulically operable front loader coupled to a front of the traveling vehicle body. The traveling vehicle body includes left and right rear wheels disposed to the left and right of a driver seat, left and right rear fenders covering the left and right rear wheels, a valve unit for the front loader and an operating lever for the front loader. The valve unit is disposed in a space between the rear wheel and the rear fender on one of left and right sides, and the operating lever extends from the space, upward of the rear fender on the one of the left and right sides.Type: GrantFiled: December 7, 2016Date of Patent: November 19, 2019Assignee: Kubota CorporationInventors: Hiroki Nagai, Tomohisa Yamamoto, Masayuki Akita, Shoichiro Nagaishi, Koichiro Matsumoto, Nobuyuki Yamashita, Ryo Matsumoto, Azusa Furihata, Masahiro Izumi
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Publication number: 20190276090Abstract: A work vehicle including: a vehicle body frame; a prime mover part located on a front or rear part of the vehicle body frame; a bonnet configured to open and close by swinging, and covering the prime mover part; and an assist unit configured to assist the bonnet to operate to open. A lateral end portion of the vehicle body frame is provided with a first linkage part with which the assist unit is linked. A lateral end portion of a lower end part of the bonnet, which is located closer to an end cover than the first linkage part is, is provided with a second linkage part with which the assist unit is linked. The assist unit is provided with an expansion/contraction mechanism biased so as to expand, and is located laterally outside the prime mover part and spans the first linkage part and the second linkage part.Type: ApplicationFiled: May 29, 2019Publication date: September 12, 2019Inventors: Takeshi Komorida, Koichiro Matsumoto, Masaki Takaoka, Arisa Kimura, Tasuku Teraoka, Azusa Furihata, Tomohisa Yamamoto, Toshiki Kanai, Nobuyuki Yamashita, Masayuki Akita, Takashi Kumashiro, Ryo Matsumoto, Hiroki Nagai, Tatsuki Kago, Akihito Mihara
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Patent number: 10336377Abstract: A work vehicle including: a vehicle body frame; a prime mover part located on a front or rear part of the vehicle body frame; a bonnet configured to open and close by swinging, and covering the prime mover part; and an assist unit configured to assist the bonnet to operate to open. A lateral end portion of the vehicle body frame is provided with a first linkage part with which the assist unit is linked. A lateral end portion of a lower end part of the bonnet, which is located closer to an end cover than the first linkage part is, is provided with a second linkage part with which the assist unit is linked. The assist unit is provided with an expansion/contraction mechanism biased so as to expand, and is located laterally outside the prime mover part and spans the first linkage part and the second linkage part.Type: GrantFiled: November 8, 2016Date of Patent: July 2, 2019Assignee: Kubota CorporationInventors: Takeshi Komorida, Koichiro Matsumoto, Masaki Takaoka, Arisa Kimura, Tasuku Teraoka, Azusa Furihata, Tomohisa Yamamoto, Toshiki Kanai, Nobuyuki Yamashita, Masayuki Akita, Takashi Kumashiro, Ryo Matsumoto, Hiroki Nagai, Tatsuki Kago, Akihito Mihara
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Patent number: 9914487Abstract: A work vehicle includes: a vehicle body frame; a prime mover part that is supported by the vehicle body frame; a bonnet that is configured to vertically swing between a closed position at which the prime mover part is covered, and an open position at which the prime mover part is open; and a support frame that supports a free end side of the bonnet located at the closed position. At least left and right guide-target parts of the bonnet or left and right guiding parts of the support frame have left and right inclined surfaces that serve as centering effective surfaces.Type: GrantFiled: November 2, 2016Date of Patent: March 13, 2018Assignee: Kubota CorporationInventors: Koichiro Matsumoto, Nobuyuki Yamashita, Hiroshi Kawabata, Tomohisa Yamamoto, Masayuki Akita, Tasuku Teraoka, Yoshihisa Tonoya
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Patent number: 9872431Abstract: A cutter blade for a mower is driven to rotate about a vertical axis inside a housing. The cutter blade includes a blade body, a blade portion formed in the blade body and a wind generating portion formed in the blade body on its side opposite in a width direction thereof to the side where the blade portion is formed, the wind generating portion being formed by being raised and bent from the blade body over a predetermined area from an end in a longitudinal direction thereof. At an outer end portion of the wind generating portion in the longitudinal direction of the blade body, there is formed at least one recessed portion recessed more inwards than the remaining portion of the outer end portion.Type: GrantFiled: March 15, 2016Date of Patent: January 23, 2018Assignee: Kubota CorporationInventors: Hironobu Nishihara, Masayuki Akita
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Patent number: 9699962Abstract: A mower unit is detachably mounted between front wheels and rear wheels of a mid-mount grass mower. The mower unit includes a blade cover having a top plate and a side plate extending from a circumferential edge of the top plate, a pair of right and left ride-over deck units provided on the top plate. Each ride-over deck unit includes a support deck fixed to an upper face of the top plate, a wheel guide member movable between a home position for storage in the support deck and a bridging position for bridging between the support deck and a ground surface, and a tethering member for tethering the support deck with the wheel guide member.Type: GrantFiled: September 3, 2015Date of Patent: July 11, 2017Assignee: Kubota CorporationInventors: Masayuki Akita, Takeshi Komorida, Ryo Matsumoto, Masahiro Izumi, Azusa Furihata, Toshiki Kanai, Tomohisa Yamamoto
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Publication number: 20170167112Abstract: A work vehicle includes a riding-type traveling vehicle body and a hydraulically operable front loader coupled to a front of the traveling vehicle body. The traveling vehicle body includes left and right rear wheels disposed to the left and right of a driver seat, left and right rear fenders covering the left and right rear wheels, a valve unit for the front loader and an operating lever for the front loader. The valve unit is disposed in a space between the rear wheel and the rear fender on one of left and right sides, and the operating lever extends from the space, upward of the rear fender on the one of the left and right sides.Type: ApplicationFiled: December 7, 2016Publication date: June 15, 2017Inventors: Hiroki Nagai, Tomohisa Yamamoto, Masayuki Akita, Shoichiro Nagaishi, Koichiro Matsumoto, Nobuyuki Yamashita, Ryo Matsumoto, Azusa Furihata, Masahiro Izumi
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Publication number: 20170129544Abstract: A work vehicle including: a vehicle body frame; a prime mover part located on a front or rear part of the vehicle body frame; a bonnet configured to open and close by swinging, and covering the prime mover part; and an assist unit configured to assist the bonnet to operate to open. A lateral end portion of the vehicle body frame is provided with a first linkage part with which the assist unit is linked. A lateral end portion of a lower end part of the bonnet, which is located closer to an end cover than the first linkage part is, is provided with a second linkage part with which the assist unit is linked. The assist unit is provided with an expansion/contraction mechanism biased so as to expand, and is located laterally outside the prime mover part and spans the first linkage part and the second linkage part.Type: ApplicationFiled: November 8, 2016Publication date: May 11, 2017Inventors: Takeshi Komorida, Koichiro Matsumoto, Masaki Takaoka, Arisa Kimura, Tasuku Teraoka, Azusa Furihata, Tomohisa Yamamoto, Toshiki Kanai, Nobuyuki Yamashita, Masayuki Akita, Takashi Kumashiro, Ryo Matsumoto, Hiroki Nagai, Tatsuki Kago, Akihito Mihara
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Publication number: 20170129543Abstract: A work vehicle includes: a vehicle body frame; a prime mover part that is supported by the vehicle body frame; a bonnet that is configured to vertically swing between a closed position at which the prime mover part is covered, and an open position at which the prime mover part is open; and a support frame that supports a free end side of the bonnet located at the closed position. At least left and right guide-target parts of the bonnet or left and right guiding parts of the support frame have left and right inclined surfaces that serve as centering effective surfaces.Type: ApplicationFiled: November 2, 2016Publication date: May 11, 2017Inventors: Koichiro Matsumoto, Nobuyuki Yamashita, Hiroshi Kawabata, Tomohisa Yamamoto, Masayuki Akita, Tasuku Teraoka, Yoshihisa Tonoya
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Patent number: 9518543Abstract: A fuel supply system for an internal combustion engine includes a heat exchanger that has a heat exchanging wall between a liquefied fuel passage and an engine coolant passage. Heated and vaporized fuel flowing out from the liquefied fuel passage of the heat exchanger is supplied to the internal combustion engine. A flow rate of liquefied fuel supplied to the liquefied fuel passage of the heat exchanger is set. A flow rate of engine coolant supplied to the engine coolant passage of the heat exchanger is determined on the basis of a temperature of the engine coolant supplied to the engine coolant passage of the heat exchanger such that nucleate boiling or transition boiling of the liquefied fuel in the set flow rate occurs near a boundary between nucleate boiling and transition boiling in the liquefied fuel passage.Type: GrantFiled: May 31, 2012Date of Patent: December 13, 2016Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, NIPPON SOKEN, INC., AISAN KOGYO KABUSHIKI KAISHAInventors: Hideaki Kosuge, Susumu Kojima, Rio Shimizu, Tomojiro Sugimoto, Masayuki Akita, Jin Tanaka, Makoto Nakagawa, Masaki Ikeya
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Publication number: 20160192586Abstract: A cutter blade for a mower is driven to rotate about a vertical axis inside a housing. The cutter blade includes a blade body, a blade portion formed in the blade body and a wind generating portion formed in the blade body on its side opposite in a width direction thereof to the side where the blade portion is formed, the wind generating portion being formed by being raised and bent from the blade body over a predetermined area from an end in a longitudinal direction thereof. At an outer end portion of the wind generating portion in the longitudinal direction of the blade body, there is formed at least one recessed portion recessed more inwards than the remaining portion of the outer end portion.Type: ApplicationFiled: March 15, 2016Publication date: July 7, 2016Inventors: Hironobu Nishihara, Masayuki Akita
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Publication number: 20160183454Abstract: Disclosed is a mower unit detachably mounted between front wheels and rear wheels of a mid-mount grass mower. The mower unit includes a blade cover having a top plate and a side plate extending from a circumferential edge of the top plate, a pair of right and left ride-over deck units provided on the top plate. Each ride-over deck unit includes a support deck fixed to an upper face of the top plate, a wheel guide member movable between a home position for storage in the support deck and a bridging position for bridging between the support deck and a ground surface, and a tethering member for tethering the support deck with the wheel guide member.Type: ApplicationFiled: September 3, 2015Publication date: June 30, 2016Inventors: Masayuki Akita, Takeshi Komorida, Ryo Matsumoto, Masahiro Izumi, Azusa Furihata, Toshiki Kanai, Tomohisa Yamamoto
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Patent number: 9307695Abstract: A cutter blade for a mower is driven to rotate about a vertical axis inside a housing. The cutter blade includes a blade body, a blade portion formed in the blade body and a wind generating portion formed in the blade body on its side opposite in a width direction thereof to the side where the blade portion is formed, the wind generating portion being formed by being raised and bent from the blade body over a predetermined area from an end in a longitudinal direction thereof. At an outer end portion of the wind generating portion in the longitudinal direction of the blade body, there is formed at least one recessed portion recessed more inwards than the remaining portion of the outer end portion.Type: GrantFiled: February 27, 2014Date of Patent: April 12, 2016Assignee: Kubota CorporationInventors: Hironobu Nishihara, Masayuki Akita
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Publication number: 20150082763Abstract: A cutter blade for a mower is driven to rotate about a vertical axis inside a housing. The cutter blade includes a blade body, a blade portion formed in the blade body and a wind generating portion formed in the blade body on its side opposite in a width direction thereof to the side where the blade portion is formed, the wind generating portion being formed by being raised and bent from the blade body over a predetermined area from an end in a longitudinal direction thereof. At an outer end portion of the wind generating portion in the longitudinal direction of the blade body, there is formed at least one recessed portion recessed more inwards than the remaining portion of the outer end portion.Type: ApplicationFiled: February 27, 2014Publication date: March 26, 2015Applicant: Kubota CorporationInventors: Hironobu Nishihara, Masayuki Akita
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Publication number: 20140116394Abstract: A fuel supply system for an internal combustion engine includes a heat exchanger that has a heat exchanging wall between a liquefied fuel passage and an engine coolant passage. Heated and vaporized fuel flowing out from the liquefied fuel passage of the heat exchanger is supplied to the internal combustion engine. A flow rate of liquefied fuel supplied to the liquefied fuel passage of the heat exchanger is set. A flow rate of engine coolant supplied to the engine coolant passage of the heat exchanger is determined on the basis of a temperature of the engine coolant supplied to the engine coolant passage of the heat exchanger such that nucleate boiling or transition boiling of the liquefied fuel in the set flow rate occurs near a boundary between nucleate boiling and transition boiling in the liquefied fuel passage.Type: ApplicationFiled: May 31, 2012Publication date: May 1, 2014Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISAN KOGYO KABUSHIKI KAISHA, NIPPON SOKEN, INC.Inventors: Hideaki Kosuge, Susumu Kojima, Rio Shimizu, Tomojiro Sugimoto, Masayuki Akita, Jin Tanaka, Makoto Nakagawa, Masaki Ikeya
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Patent number: 7028887Abstract: A dispatch operation plan devising system comprises a demand estimating unit estimating a demand for a replenishment in a cash automatic transaction apparatus and an enforcement plan making unit making an enforcement plan for a dispatch operation on the basis of a result of estimation for demand made by the demand estimating unit so that a cost of dispatching an operator is minimum, thereby devising the most suitable plan with respect to the cost of the dispatch operation that the operator is dispatched to the cash automatic transaction apparatus and operates thereat. The operation cost can be reduced and the business efficiency can be improved.Type: GrantFiled: December 19, 2003Date of Patent: April 18, 2006Assignee: Fujitsu LimitedInventors: Kenichi Chigira, Hiroyuki Ishijima, Masayuki Akita, Hiroyuki Takamatsu, Katsumi Ohyama, Tsugio Taki, Hideki Yagisawa
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Publication number: 20040217162Abstract: A dispatch operation plan devising system comprises a demand estimating unit estimating a demand for a replenishment in a cash automatic transaction apparatus and an enforcement plan making unit making an enforcement plan for a dispatch operation on the basis of a result of estimation for demand made by the demand estimating unit so that a cost of dispatching an operator is minimum, thereby devising the most suitable plan with respect to the cost of the dispatch operation that the operator is dispatched to the cash automatic transaction apparatus and operates thereat. The operation cost can be reduced and the business efficiency can be improved.Type: ApplicationFiled: December 19, 2003Publication date: November 4, 2004Applicant: Fujitsu LimitedInventors: Kenichi Chigira, Hiroyuki Ishijima, Masayuki Akita, Hiroyuki Takamatsu, Katsumi Ohyama, Tsugio Taki, Hideki Yagisawa
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Publication number: 20040158539Abstract: An operation plan devising system has a demand estimating unit estimating the demand for cash and other articles as replenishments per unit time, an inputting unit inputting the number of times of a replenishment operation or a specific replenishing operation day, and a plan making unit making an operation plan having replenishing operation days including the specific replenishing operation day and the amount/quantity of the replenishments on the replenishing operation day on the basis of the number of times of the replenishing operation and the specific replenishing operation day so that the replenishing operation is carried out the above number of times within the predetermined period of time and on a specific replenishing operation day. It is possible to readily set a plan of replenishing the cash automatic transaction apparatus with the consumables, which satisfies conditions such as a predetermined number of times of replenishment and the replenishment days.Type: ApplicationFiled: December 19, 2003Publication date: August 12, 2004Applicant: Fujitsu LimitedInventors: Masayuki Akita, Hiroyuki Ishijima, Kenichi Chigira, Hiroyuki Takamatsu, Katsumi Ohyama, Tsugio Taki, Hideki Yagisawa
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Patent number: D723589Type: GrantFiled: February 27, 2014Date of Patent: March 3, 2015Assignee: Kubota CorporationInventors: Hironobu Nishihara, Masayuki Akita