Patents by Inventor Hiroaki Hamamoto
Hiroaki Hamamoto 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: 11953035Abstract: A working machine includes a prime mover, a hydraulic pump driven by power of the prime mover, a cooler including a cooling fan rotated by either the power of the prime mover or hydraulic fluid delivered from the hydraulic pump, and a controller configured or programmed to perform a reduction control for reducing a target fan rotation speed that is a target rotation speed of the cooling fan in response to reduction of an actual prime mover rotation speed that is an actual rotation speed of the prime mover, and to perform, after the reduction control, a restoration control for restoring the target fan rotation speed. The controller is configured or programmed to make a difference between a reduction rate of the target fan rotation speed in the reduction control and an increase rate of the target fan rotation speed in the restoration control.Type: GrantFiled: July 12, 2023Date of Patent: April 9, 2024Assignee: KUBOTA CORPORATIONInventors: Daiki Abe, Ryota Hamamoto, Hiroaki Nakagawa
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Patent number: 11946227Abstract: A working machine includes a controller configured or programmed to perform an automatic deceleration for automatically decelerating a left traveling motor and a right traveling motor rotated at a second speed by shifting from the second speed to the first speed, and to determine a deceleration threshold that is used for judging whether the automatic deceleration has to be performed or not.Type: GrantFiled: June 28, 2021Date of Patent: April 2, 2024Assignee: KUBOTA CORPORATIONInventors: Kohei Nagao, Yuji Fukuda, Ryota Hamamoto, Hiroaki Nakagawa
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Publication number: 20240102263Abstract: A working machine includes a machine body, a working device provided on the machine body movably up and down with respect to the machine body, a protector provided on the machine body to protect an operator's seat on the machine body, a detector provided on the protector to detect an obstacle higher than the protector, and a controller configured or programmed to, when the detector detects the obstacle, perform at least one process to prevent the working device from contacting the obstacle.Type: ApplicationFiled: September 27, 2022Publication date: March 28, 2024Inventors: Ryota HAMAMOTO, Hiroaki NAKAGAWA, Yuji FUKUDA
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Patent number: 11919366Abstract: A target thermal sensation setter sets target thermal sensations for a finite number of parts into which the occupant is virtually divided. A cabin temperature controller individually controls a cabin air-conditioning unit and an auxiliary heater so that the thermal sensations of the respective parts of the occupant estimated by an occupant thermal sensation estimator fall within a range of the target thermal sensations.Type: GrantFiled: September 29, 2020Date of Patent: March 5, 2024Assignees: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., JAPAN CLIMATE SYSTEMS CORPORATIONInventors: Kensaku Saitou, Kou Komori, Mio Furui, Yu Nakashima, Hiroshi Hamamoto, Yoichi Miyazaki, Hideaki Nishii, Hiroaki Shigenaka
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Publication number: 20170174546Abstract: A glass melt production apparatus, which comprises a melting vessel, a vacuum degassing apparatus, a first conducting pipe structure connecting the melting vessel and the vacuum degassing apparatus, and a second conducting pipe structure to introduce a glass melt to a forming means, provided downstream the vacuum degassing apparatus; the vacuum degassing apparatus having an uprising pipe through which the glass melt from the melting vessel ascends, a vacuum degassing vessel, and a downfalling pipe through which the glass melt from the vacuum degassing vessel descends; the flow path of the glass melt in the uprising pipe, the vacuum degassing vessel and the downfalling pipe being made of a refractory material; the first conducting pipe structure having an upstream pit to supply the glass melt to the uprising pipe; and the second conducting pipe structure having a downstream pit containing the glass melt from the downfalling pipe; the glass melt production apparatus further comprising a third conducting pipe stType: ApplicationFiled: March 3, 2017Publication date: June 22, 2017Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Hiroaki HAMAMOTO, Suguru KOBAYASHI, Michito SASAKI, Takashi KUBO, Wataru MIYOSHI, Kazuo NINOMIYA
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Patent number: 9637407Abstract: There are provided a conduit structure for molten glass, a vacuum degassing apparatus using the conduit structure, and a process for vacuum-degassing molten glass by use of the vacuum degassing apparatus, wherein without using a cooling system, solid thermal insulating materials constituting a backup for the conduit are prevented from being corroded by molten glass oozing out of a joint between adjacent fused cast refractories constituting the conduit, and wherein production cost is reduced.Type: GrantFiled: October 23, 2015Date of Patent: May 2, 2017Assignee: Asahi Glass Company, LimitedInventors: Kensuke Nagai, Hiroaki Hamamoto, Shuji Kabashima
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Publication number: 20170081233Abstract: To facilitate a preheating operation in a vacuum degassing apparatus having a flow path of a glass melt in an uprising pipe, a vacuum degassing vessel and a downfalling pipe constituted by a refractory material. Flow of a glass melt G between a melting vessel 100 and an upstream pit 210 of a first conducting pipe structure connected to a vacuum degassing vessel 320 is shut off, and in a state where the flow of the glass melt G in a by-pass 500 for the glass melt G is shut off by a first closing means 220, a combustion gas from preheating burners 530, 540 is introduced to the by-pass 500 to preheat the flow path of the glass melt G in an uprising pipe 330, the vacuum degassing vessel 320 and a downfalling pipe 340.Type: ApplicationFiled: December 5, 2016Publication date: March 23, 2017Applicant: Asahi Glass Company, LimitedInventors: Hiroaki HAMAMOTO, Suguru Kobayashi, Takahisa Nagata, Satoshi Abiko, Michito Sasaki, Kazuo Ninomiya
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Patent number: 9505645Abstract: It is an object of the present invention to provide a vacuum degassing apparatus configured so as to be capable of carrying out more simply exchange operation for an extension pipe made of heat-resisting metal and immersed in molten glass. The present invention includes a vacuum housing, a vacuum vessel, an introduction pipe and a discharge pipe which are assembled by a plurality of bricks, and an extension pipe connected to at least one of the introduction pipe and the discharge pipe and made of heat-resisting metal. The extension pipe is constituted by a base end portion, a body portion formed so as to be continuous to the base end portion, and a sealing flange extending from an outer peripheral side of the body portion.Type: GrantFiled: August 28, 2013Date of Patent: November 29, 2016Assignee: Asahi Glass Company, LimitedInventors: Wataru Miyoshi, Hiroaki Hamamoto, Suguru Kobayashi, Toshiyuki Uematsu, Michito Sasaki
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Publication number: 20160039702Abstract: There are provided a conduit structure for molten glass, a vacuum degassing apparatus using the conduit structure, and a process for vacuum-degassing molten glass by use of the vacuum degassing apparatus, wherein without using a cooling system, solid thermal insulating materials constituting a backup for the conduit are prevented from being corroded by molten glass oozing out of a joint between adjacent fused cast refractories constituting the conduit, and wherein production cost is reduced.Type: ApplicationFiled: October 23, 2015Publication date: February 11, 2016Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Kensuke NAGAI, Hiroaki HAMAMOTO, Shuji KABASHIMA
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Patent number: 9073772Abstract: A conduit structure for molten glass, in which molten glass is flown through a double-pipe structure, with little stress loading even for a long time operation. A supporting rib connecting an inner pipe and an outer pipe is employed in the double pipe structure having the inner pipe and outer pipe in the conduit structure for molten glass, wherein excessive stress concentration hardly occurs in an inner pipe-joint portion, an outer pipe-joint portion and the rib when the rib is applied with a stress load due to the weight of the inner pipe.Type: GrantFiled: February 4, 2013Date of Patent: July 7, 2015Assignee: Asahi Glass Company, LimitedInventors: Takahiro Nagata, Wataru Miyoshi, Hajime Itoh, Hiroaki Hamamoto, Michito Sasaki
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Patent number: 8720229Abstract: A vacuum degassing apparatus having a throughput of at least 200 tons/day without causing problems such as a stagnation of molten glass flow in the molten glass flow path, an increment of flow rate of the molten glass flow in a local area, an excessive increment of pressure loss of the molten glass flow. A vacuum degassing apparatus comprises a vacuum degassing vessel, and an uprising pipe and a downfalling pipe which are connected with the vacuum degassing vessel, wherein the vacuum degassing vessel includes a wide portion for providing a molten glass flow path, and in the wide portion, the proportion W1/L1 of the breadth of molten glass flow path W1 to the length of molten glass flow path L1 is at least 0.Type: GrantFiled: October 1, 2010Date of Patent: May 13, 2014Assignee: Asahi Glass Company, LimitedInventors: Rei Kitamura, Hironobu Yamamichi, Hiroaki Hamamoto, Hajime Itoh, Housaku Yonetsu
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Publication number: 20130340478Abstract: It is an object of the present invention to provide a vacuum degassing apparatus configured so as to be capable of carrying out more simply exchange operation for an extension pipe made of heat-resisting metal and immersed in molten glass. The present invention includes a vacuum housing, a vacuum vessel, an introduction pipe and a discharge pipe which are assembled by a plurality of bricks, and an extension pipe connected to at least one of the introduction pipe and the discharge pipe and made of heat-resisting metal. The extension pipe is constituted by a base end portion, a body portion formed so as to be continuous to the base end portion, and a sealing flange extending from an outer peripheral side of the body portion.Type: ApplicationFiled: August 28, 2013Publication date: December 26, 2013Applicant: Asahi Glass Company, LimitedInventors: Wataru MIYOSHI, Hiroaki Hamamoto, Suguru Kobayashi, Toshiyuki Uematsu, Michito Sasaki
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Publication number: 20110016922Abstract: A vacuum degassing apparatus having a throughput of at least 200 tons/day without causing problems such as a stagnation of molten glass flow in the molten glass flow path, an increment of flow rate of the molten glass flow in a local area, an excessive increment of pressure loss of the molten glass flow. A vacuum degassing apparatus comprises a vacuum degassing vessel, and an uprising pipe and a downfalling pipe which are connected with the vacuum degassing vessel, wherein the vacuum degassing vessel includes a wide portion for providing a molten glass flow path, and in the wide portion, the proportion W1/L1 of the breadth of molten glass flow path W1 to the length of molten glass flow path L1 is at least 0.Type: ApplicationFiled: October 1, 2010Publication date: January 27, 2011Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Rei KITAMURA, Hironubu YAMAMICHI, Hiroaki HAMAMOTO, Hajime ITOH, Housaku YONETSU
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Publication number: 20100251772Abstract: The present invention is to provide a molten glass producing apparatus realizing simultaneously the production of a glass article of high quality and save-energy in producing molten glass, a molten glass producing method employing the molten glass producing apparatus and a method for producing a glass article. In the molten glass producing apparatus having a vacuum degassing apparatus, the melting tank is provided with a separating means for separating the area for circulating the molten glass in the melting tank into an upstream circulation flow and a downstream circulation flow, the distance from the separating means to the downstream end of the molten glass flow path in the melting tank is from 0.1 LE to 0.Type: ApplicationFiled: June 22, 2010Publication date: October 7, 2010Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Hajime Itoh, Hironobu Yamamichi, Toru Nishikawa, Kazuo Ninomiya, Hiroaki Hamamoto