Patents by Inventor Shigeyoshi Mori
Shigeyoshi Mori 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: 11898650Abstract: This pressure-reducing valve includes: a casing in which a valve passage is formed; a valve body that is movably housed in the casing and changes a position thereof according to a secondary pressure to adjust an opening degree of the valve passage; and a biasing member that biases the valve body against the secondary pressure in an opening direction in which the valve passage opens. The biasing member is a spring in the form of a plate and extends laterally from the valve body.Type: GrantFiled: January 15, 2021Date of Patent: February 13, 2024Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Yoshiteru Fujimoto, Masayoshi Okamoto, Masataka Higashiura, Masataka Shirasawa, Tsutomu Tomita, Shigeyoshi Mori
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Publication number: 20230055857Abstract: This pressure-reducing valve includes: a casing in which a valve passage is formed; a valve body that is movably housed in the casing and changes a position thereof according to a secondary pressure to adjust an opening degree of the valve passage; and a biasing member that biases the valve body against the secondary pressure in an opening direction in which the valve passage opens. The biasing member is a spring in the form of a plate and extends laterally from the valve body.Type: ApplicationFiled: January 15, 2021Publication date: February 23, 2023Inventors: Yoshiteru FUJIMOTO, Masayoshi OKAMOTO, Masataka HIGASHIURA, Masataka SHIRASAWA, Tsutomu TOMITA, Shigeyoshi MORI
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Publication number: 20220260111Abstract: A ball socket structure is provided, which includes a ball portion and a socket portion, the ball portion and the socket portion being configured to slide against one another, in which the socket portion includes a sliding surface including a PVD coating layer, the sliding surface of the socket portion is a concave spherical surface, and a value (Ds/Rs) of a ratio between a depth Ds of the sliding surface and a radius of curvature Rs of the sliding surface is from 0.05 to 0.70. [Selected Drawing] FIGS.Type: ApplicationFiled: January 20, 2022Publication date: August 18, 2022Inventors: Tomoyasu SHIROYA, Shigeyoshi MORI
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Patent number: 10601283Abstract: A cooling portion has an air inlet into which cooling air flows and is positioned in a preset range. When a distance from the upper to lower ends of an oil chamber in the axial direction of a rotating shaft member is h, and the shortest distance between an outer peripheral face of a casing and an inner peripheral face of a cover is a, the preset range is set in the following manner. Specifically, the preset range is set between ¼h upward and 5/4h downward relative to the upper end of the oil chamber as a reference point, in the axial direction of the rotating shaft member. Additionally, the preset range is set between the outer peripheral face of the casing and relative to the outer peripheral face of the casing as a reference point, in the radial direction of the rotating shaft member.Type: GrantFiled: February 21, 2018Date of Patent: March 24, 2020Assignee: DAIDO METAL COMPANY LTD.Inventors: Kwangik Na, Motohira Yamada, Shigeyoshi Mori
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Patent number: 10400821Abstract: When an annular portion of a thrust collar rotates together with a rotating shaft member, centrifugal force and shear force, or differential pressure caused by difference in flow rate are generated in lubricating oil in a circulation oil chamber. With this, the lubricating oil in the circulation oil chamber is guided from the inner peripheral side to the outer peripheral side of the annular portion, through a circulation hole penetrating the annular portion. The flow of lubricating oil guided by the circulation hole forms a flow of lubricating oil from a lower oil chamber to an upper oil chamber through the circulation oil chamber. As a result, the lubricating oil stored in the lower oil chamber is circulated to the upper oil chamber through the circulation oil chamber, by rotation of the thrust collar.Type: GrantFiled: May 24, 2016Date of Patent: September 3, 2019Assignee: DAIDO METAL COMPANY LTD.Inventors: Kwangik Na, Shigeyoshi Mori, Tadatoshi Nagasaki
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Patent number: 10323690Abstract: A lubricating oil passage portion that constitutes a cooling portion is exposed to the outside from a casing. Lubricating oil having absorbed heat of a thrust bearing portion and a journal bearing portion is cooled in the cooling portion, when the lubricating oil moves from an upper oil chamber to a lower oil chamber while circulating by use of gravity. Thus, the circulating lubricating oil prompts cooling of the heated thrust bearing portion and journal bearing portion. Additionally, the lubricating oil passage portion of the cooling portion is provided integrally with the casing, on the radially outer side of the casing.Type: GrantFiled: July 29, 2016Date of Patent: June 18, 2019Assignee: DAIDO METAL COMPANY LTD.Inventors: Kwangik Na, Shigeyoshi Mori
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Publication number: 20180245636Abstract: A lubricating oil passage portion that constitutes a cooling portion is exposed to the outside from a casing. Lubricating oil having absorbed heat of a thrust bearing portion and a journal bearing portion is cooled in the cooling portion, when the lubricating oil moves from an upper oil chamber to a lower oil chamber while circulating by use of gravity. Thus, the circulating lubricating oil prompts cooling of the heated thrust bearing portion and journal bearing portion. Additionally, the lubricating oil passage portion of the cooling portion is provided integrally with the casing, on the radially outer side of the casing. For this reason, the cooling portion does not require long piping.Type: ApplicationFiled: July 29, 2016Publication date: August 30, 2018Inventors: Kwangik NA, Shigeyoshi MORI
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Publication number: 20180238389Abstract: When an annular portion of a thrust collar rotates together with a rotating shaft member, centrifugal force and shear force, or differential pressure caused by difference in flow rate, for example, are generated in lubricating oil in a circulation oil chamber. With this, the lubricating oil in the circulation oil chamber is guided from the inner peripheral side to the outer peripheral side of the annular portion, through a circulation hole penetrating the annular portion. The flow of lubricating oil guided by the circulation hole forms a flow of lubricating oil from a lower oil chamber to an upper oil chamber through the circulation oil chamber. As a result, the lubricating oil stored in the lower oil chamber is circulated to the upper oil chamber through the circulation oil chamber, by rotation of the thrust collar.Type: ApplicationFiled: May 24, 2016Publication date: August 23, 2018Inventors: Kwangik NA, Shigeyoshi MORI, Tadatoshi NAGASAKI
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Publication number: 20180241287Abstract: A cooling portion has an air inlet into which cooling air flows and is positioned in a preset range. When a distance from the upper to lower ends of an oil chamber in the axial direction of a rotating shaft member is h, and the shortest distance between an outer peripheral face of a casing and an inner peripheral face of a cover is a, the preset range is set in the following manner. Specifically, the preset range is set between ¼h upward and 5/4h downward relative to the upper end of the oil chamber as a reference point, in the axial direction of the rotating shaft member. Additionally, the preset range is set between the outer peripheral face of the casing and relative to the outer peripheral face of the casing as a reference point, in the radial direction of the rotating shaft member.Type: ApplicationFiled: February 21, 2018Publication date: August 23, 2018Inventors: Kwangik NA, Motohira YAMADA, Shigeyoshi MORI
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Patent number: 8106560Abstract: A brushless motor is provided. A stator core has a plurality of teeth extending radially from an annular portion of the stator core. The number of the teeth is an integral multiple of the number of coil-drive phases. Coil relief holes for allowing coils to enter are formed on the motor base. The number of the coil relief holes is less than the number of the teeth by the number of the coil-drive phases multiplied by N (N is a natural number). The number of turns of the motor-drive coil wound around one of the teeth corresponding to a portion of the motor base where the coil relief hole is not formed is set to less than that corresponding to a portion of the motor base where the coil relief hole is formed.Type: GrantFiled: March 17, 2009Date of Patent: January 31, 2012Assignee: Alphana Technology Co., Ltd.Inventor: Shigeyoshi Mori
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Publication number: 20090236927Abstract: A brushless motor is provided. A stator core has a plurality of teeth extending radially from an annular portion of the stator core. The number of the teeth is an integral multiple of the number of coil-drive phases. Coil relief holes for allowing coils to enter are formed on the motor base. The number of the coil relief holes is less than the number of the teeth by the number of the coil-drive phases multiplied by N (N is a natural number). The number of turns of the motor-drive coil wound around one of the teeth corresponding to a portion of the motor base where the coil relief hole is not formed is set to less than that corresponding to a portion of the motor base where the coil relief hole is formed.Type: ApplicationFiled: March 17, 2009Publication date: September 24, 2009Applicant: ALPHANA TECHNOLOGY CO., LTD.Inventor: Shigeyoshi Mori
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Patent number: 7118233Abstract: A polygon mirror drive motor according to the present invention comprises a stator and a rotor having a hexahedron-shaped polygon mirror and a rotation drive shaft. The polygon mirror in one preferred mode is comprised of two square faces that are parallel with each other and orthogonal to said rotation drive shaft, the two square faces having each a center hole in which said rotation drive shaft is inserted, and four mirror facets that are parallel with said rotation drive shaft. In the polygon mirror, a value of D/L is preferably in a range of from 0.37 to 0.41 where D is a diameter of said center hole and L is an edge length of said two square faces.Type: GrantFiled: May 11, 2005Date of Patent: October 10, 2006Assignee: Victor Company of Japan, LimitedInventor: Shigeyoshi Mori
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Publication number: 20060039058Abstract: A polygon mirror drive motor according to the present invention comprises a stator and a rotor having a hexahedron-shaped polygon mirror and a rotation drive shaft. The polygon mirror in one preferred mode is comprised of two square faces that are parallel with each other and orthogonal to said rotation drive shaft, the two square faces having each a center hole in which said rotation drive shaft is inserted, and four mirror facets that are parallel with said rotation drive shaft. In the polygon mirror, a value of D/L is preferably in a range of from 0.37 to 0.41 where D is a diameter of said center hole and L is an edge length of said two square faces.Type: ApplicationFiled: May 11, 2005Publication date: February 23, 2006Inventor: Shigeyoshi Mori
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Patent number: 5394102Abstract: The specification discloses an NRR (Non-Repeatable Run-out) measuring instrument for measuring the NRR of the rotating object motor to be measured without installation of a special attachment such as an encoder. In the NRR measuring instrument of the invention, encoder signals are obtained from back-electromotive forces developed at driving coils of the rotating object motor by removing spike noise thereof by LPF 30U, 30V, 30W and reformed by a wave shaping circuits 32U, 32V, 32W. The encoder signals together with digitized displacement signals generated by noncontact displacement measuring instrument 14 through A/D 28 are inputted to a CPU 34. In the CPU 34, sampled data are acquired from the digitized displacement signals being triggered by the encoder signals and the NRR is calculated based on the sampling data.Type: GrantFiled: April 8, 1993Date of Patent: February 28, 1995Assignee: Victor Company of Japan, Ltd.Inventors: Shigeyoshi Mori, Ryuji Mizuguchi