Patents by Inventor Mitsuyoshi ITAHARA
Mitsuyoshi ITAHARA 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: 11686393Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.Type: GrantFiled: February 4, 2022Date of Patent: June 27, 2023Assignee: AISAN KOGYO KABUSHIKI KAISHAInventors: Mitsuyoshi Itahara, Kazuhiro Yoneshige, Hiroshi Kawazoe, Makoto Fukui, Sadatsugu Nagata
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Patent number: 11619310Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.Type: GrantFiled: February 4, 2022Date of Patent: April 4, 2023Assignee: AISAN KOGYO KABUSHIKI KAISHAInventors: Mitsuyoshi Itahara, Kazuhiro Yoneshige, Hiroshi Kawazoe, Makoto Fukui, Sadatsugu Nagata
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Publication number: 20220170554Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.Type: ApplicationFiled: February 4, 2022Publication date: June 2, 2022Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Mitsuyoshi ITAHARA, Kazuhiro YONESHIGE, Hiroshi KAWAZOE, Makoto FUKUI, Sadatsugu NAGATA
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Publication number: 20220170553Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.Type: ApplicationFiled: February 4, 2022Publication date: June 2, 2022Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Mitsuyoshi ITAHARA, Kazuhiro YONESHIGE, Hiroshi KAWAZOE, Makoto FUKUI, Sadatsugu NAGATA
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Patent number: 11274750Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.Type: GrantFiled: June 1, 2018Date of Patent: March 15, 2022Assignee: AISAN KOGYO KABUSHIKI KAISHAInventors: Mitsuyoshi Itahara, Kazuhiro Yoneshige, Hiroshi Kawazoe, Makoto Fukui, Sadatsugu Nagata
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Publication number: 20200173562Abstract: In a double eccentric valve, a valve seat or valve body includes a rubber seal part in which a seat surface or seal surface is formed. An interference between the valve seat and the valve body is made minimum at a position of a rotary-shaft-directional end of the valve body in the radial direction of the valve body which is parallel to an extending direction of the axis of a rotary shaft.Type: ApplicationFiled: June 1, 2018Publication date: June 4, 2020Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Mitsuyoshi ITAHARA, Kazuhiro YONESHIGE, Hiroshi KAWAZOE, Makoto FUKUI, Sadatsugu NAGATA
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Patent number: 10007277Abstract: A pressure regulating valve to regulate a pressure of fuel gas includes a valve seat, a valve element movable into or out of contact with the valve seat to shut off or allow a flow of fuel gas, and a piston placed facing the valve element by interposing the valve seat and being located downstream of the valve element in a flowing direction of the fuel gas. The pressure regulating valve further includes a holder placed more upstream than the valve element in the flowing direction of fuel gas. The holder includes a bottom-closed cylindrical part opening toward the upstream side, and a through hole formed through the bottom-closed cylindrical part from its inner peripheral surface to outer peripheral surface.Type: GrantFiled: October 4, 2016Date of Patent: June 26, 2018Assignee: AISAN KOGYO KABUSHIKI KAISHAInventors: Masahiro Kobayashi, Mitsuyoshi Itahara, Kazuhiro Nakamura, Hideyuki Fukuda
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Publication number: 20170130862Abstract: A pressure reducing valve includes a valve seat, a valve element configured to contact with or separate from the valve seat to close or open a flow passage, a piston to move the valve element into or out of contact with the valve seat, and a spring urging the piston in a valve opening direction of the valve element. The pressure reducing valve further includes a rattling prevention part for preventing rattling which may occur between the piston and the spring due to unevenness of a polished surface of the spring.Type: ApplicationFiled: October 27, 2016Publication date: May 11, 2017Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Masahiro KOBAYASHI, Mitsuyoshi ITAHARA, Hideyuki FUKUDA, Takehide NAKAMURA, Hirofumi HASHIBA, Seitaro ITO, Sumito TAKEDA, Hiroshi KAWAZOE
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Publication number: 20170115673Abstract: A pressure regulating valve to regulate a pressure of fuel gas includes a valve seat, a valve element movable into or out of contact with the valve seat to shut off or allow a flow of fuel gas, and a piston placed facing the valve element by interposing the valve seat and being located downstream of the valve element in a flowing direction of the fuel gas. The pressure regulating valve further includes a holder placed more upstream than the valve element in the flowing direction of fuel gas. The holder includes a bottom-closed cylindrical part opening toward the upstream side, and a through hole formed through the bottom-closed cylindrical part from its inner peripheral surface to outer peripheral surface.Type: ApplicationFiled: October 4, 2016Publication date: April 27, 2017Applicant: AISAN KOGYO KABUSHIKI KAISHAInventors: Masahiro KOBAYASHI, Mitsuyoshi ITAHARA, Kazuhiro NAKAMURA, Hideyuki FUKUDA