Patents by Inventor Akihiko Kawano
Akihiko Kawano 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: 11862810Abstract: Disclosed herein is a separator for an electrochemical element, comprising a fibrous structure, wherein the fibrous structure has a first fibrous layer part in which short fibers and/or pulp-like fibers are intertwined with each other, and a second fibrous layer part; some of the short fibers and/or the pulp-like fibers constituting the first fibrous layer part penetrates the second fibrous layer part; and a pore diameter distribution of the fibrous structure satisfies the following formula: 0 ?m<Dmax<18 ?m, and 0 ?m?(Dmax?Dave)<13 ?m, wherein Dmax is a maximum pore diameter (?m) of the fibrous structure, and Dave is an average pore diameter (?m) of the fibrous structure.Type: GrantFiled: April 8, 2022Date of Patent: January 2, 2024Assignee: JAPAN VILENE COMPANY, LTD.Inventors: Hiroki Cho, Yoshinori Sato, Ayuka Noguchi, Akihiko Kawano, Masanao Tanaka, Yasuhiro Ito
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Publication number: 20220231377Abstract: Disclosed herein is a separator for an electrochemical element, comprising a fibrous structure, wherein the fibrous structure has a first fibrous layer part in which short fibers and/or pulp-like fibers are intertwined with each other, and a second fibrous layer part; some of the short fibers and/or the pulp-like fibers constituting the first fibrous layer part penetrates the second fibrous layer part; and a pore diameter distribution of the fibrous structure satisfies the following formula: 0 ?m<Dmax<18 ?m, and 0 ?m?(Dmax?Dave)<13 ?m, wherein Dmax is a maximum pore diameter (?m) of the fibrous structure, and Dave is an average pore diameter (?m) of the fibrous structure.Type: ApplicationFiled: April 8, 2022Publication date: July 21, 2022Inventors: Hiroki CHO, Yoshinori SATO, Ayuka NOGUCHI, Akihiko KAWANO, Masanao TANAKA, Yasuhiro ITO
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Publication number: 20210381143Abstract: It is an object of the present invention to provide a nonwoven fabric having mechanical strength which is hardly cut and broken by an external force, and a separator for electrochemical devices using the nonwoven fabric. The inventive nonwoven fabric has a sum of tensile strengths by zero-span per basis weight in the machine direction and the cross-machine direction of 6.5N/50 mm or more. Thus, the strength of the constituent fibers of this nonwoven fabric against an external force is high, and this nonwoven fabric has mechanical strength which is hardly cut and broken by an external force. The separator for electrochemical devices of the present invention is composed of this nonwoven fabric.Type: ApplicationFiled: November 5, 2019Publication date: December 9, 2021Inventors: Akihiko KAWANO, Masanao TANAKA
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Publication number: 20200220137Abstract: Disclosed herein is a separator for an electrochemical element, comprising a fibrous structure, wherein the fibrous structure has a first fibrous layer part in which short fibers and/or pulp-like fibers are intertwined with each other, and a second fibrous layer part; some of the short fibers and/or the pulp-like fibers constituting the first fibrous layer part penetrates the second fibrous layer part; and a pore diameter distribution of the fibrous structure satisfies the following formula: 0 ?m<D max<18 ?m, and 0 ?m?(D max?Dave)<13 ?m, wherein D max is a maximum pore diameter (?m) of the fibrous structure, and Dave is an average pore diameter (?m) of the fibrous structure.Type: ApplicationFiled: July 17, 2018Publication date: July 9, 2020Inventors: Hiroki CHO, Yoshinori SATO, Ayuka NOGUCHI, Akihiko KAWANO, Masanao TANAKA, Yasuhiro ITO
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Patent number: 9441628Abstract: An electric pump unit for a transmission, which supplies a hydraulic pressure to the transmission, includes: a pump which takes in and discharges oil; and a pump driving electric motor including a motor shaft connected to the pump, a motor rotor fixedly provided on the motor shaft, and a motor stator disposed around a circumference of the motor rotor. The pump and the electric motor are integrated with a lid that tightly closes an opening in a recess portion which is formed on a transmission housing of the transmission and into which the oil is introduced, and are accommodated within the recess portion.Type: GrantFiled: August 4, 2010Date of Patent: September 13, 2016Assignee: JTEKT CORPORATIONInventors: Takatoshi Sakata, Akihiko Kawano, Takeo Iino, Naohito Yoshida
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Patent number: 8876501Abstract: A motor housing that accommodates a pump-driving electric motor and a controller that controls the electric motor is fixed to a pump body of a pump that sucks and discharges oil. A sealed motor chamber that accommodates the electric motor is formed within the motor housing. A cooling oil is filled in the motor chamber.Type: GrantFiled: March 2, 2012Date of Patent: November 4, 2014Assignee: JTEKT CorporationInventors: Akihiko Kawano, Hiroki Kagawa
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Patent number: 8872396Abstract: A rotor of an electric motor is provided in which a permanent magnet holding member can be assuredly fixed to a rotor main body and the rotor main body can be easily worked and inexpensively manufactured. In the rotor, a plurality of permanent magnets 21 are held in a permanent magnet holding member 29 made of a synthetic resin and fixed to an outer peripheral part of a cylindrical rotor main body 28. An outer peripheral surface of the rotor main body 28 is a cylindrical surface. Rotation prevention recessed parts 30 are formed at a plurality of parts in the circumferential direction of the outer peripheral part in both end parts of the rotor main body 28. The permanent magnet holding member 29 includes annular parts 31 which come into close contact with the outer peripheral parts of both end faces of the rotor main body 28 and connecting parts 32 which connect both the annular parts 31 on the outer peripheral surface of the rotor main body 28 and hold the permanent magnets 21.Type: GrantFiled: February 8, 2010Date of Patent: October 28, 2014Assignee: Jtekt CorporationInventors: Takatoshi Sakata, Akihiko Kawano
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Patent number: 8790095Abstract: An electric pump unit includes: a unit housing; a bearing unit provided within the unit housing; a rotary portion; and a motor stator fixed to the unit housing. The rotary portion includes: a pump driving motor shaft supported by the bearing unit such that an axial position of a center of gravity of the rotary portion falls within an axial range of the bearing unit, and a motor rotor. The motor rotor includes: a disc portion which extends radially outwards from an axial end portion of the motor shaft; and a cylindrical portion which extends from an outer circumferential portion of the disc portion towards the other axial end side and surrounds an outer circumference of the bearing unit.Type: GrantFiled: October 14, 2009Date of Patent: July 29, 2014Assignee: JTEKT CorporationInventors: Takatoshi Sakata, Akihiko Kawano, Hiroki Kagawa
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Publication number: 20120230850Abstract: A motor housing that accommodates a pump-driving electric motor and a controller that controls the electric motor is fixed to a pump body of a pump that sucks and discharges oil. A sealed motor chamber that accommodates the electric motor is formed within the motor housing.Type: ApplicationFiled: March 2, 2012Publication date: September 13, 2012Applicant: JTEKT CORPORATIONInventors: Akihiko KAWANO, Hiroki KAGAWA
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Publication number: 20120128513Abstract: An electric pump unit for a transmission, which supplies a hydraulic pressure to the transmission, includes: a pump which takes in and discharges oil; and a pump driving electric motor including a motor shaft connected to the pump, a motor rotor fixedly provided on the motor shaft, and a motor stator disposed around a circumference of the motor rotor. The pump and the electric motor are integrated with a lid that tightly closes an opening in a recess portion which is formed on a transmission housing of the transmission and into which the oil is introduced, and are accommodated within the recess portion.Type: ApplicationFiled: August 4, 2010Publication date: May 24, 2012Applicant: JTEKT CORPORATIONInventors: Takatoshi Sakata, Akihiko Kawano, Takeo Iino, Naohito Yoshida
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Publication number: 20110291498Abstract: A rotor of an electric motor is provided in which a permanent magnet holding member can be assuredly fixed to a rotor main body and the rotor main body can be easily worked and inexpensively manufactured. In a rotor, a plurality of permanent magnets 21 are held in a permanent magnet holding member 29 made of a synthetic resin and fixed to an outer peripheral part of a cylindrical rotor main body 28. An outer peripheral surface of the rotor main body 28 is a cylindrical surface. Rotation prevention recessed parts 30 are formed at a plurality of parts in the circumferential direction of the outer peripheral part in both end parts of the rotor main body 28. The permanent magnet holding member 29 includes annular parts 31 which come into close contact with the outer peripheral parts of both end faces of the rotor main body 28 and connecting parts 32 which connect both the annular parts 31 on the outer peripheral surface of the rotor main body 28 and hold the permanent magnets 21.Type: ApplicationFiled: February 8, 2010Publication date: December 1, 2011Inventors: Takatoshi Sakata, Akihiko Kawano
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Publication number: 20110194954Abstract: An electric pump unit includes: a unit housing; a bearing unit provided within the unit housing; a rotary portion; and a motor stator fixed to the unit housing. The rotary portion includes: a pump driving motor shaft supported by the bearing unit such that an axial position of a center of gravity of the rotary portion falls within an axial range of the bearing unit, and a motor rotor. The motor rotor includes: a disc portion which extends radially outwards from an axial end portion of the motor shaft; and a cylindrical portion which extends from an outer circumferential portion of the disc portion towards the other axial end side and surrounds an outer circumference of the bearing unit.Type: ApplicationFiled: October 14, 2009Publication date: August 11, 2011Inventors: Takatoshi Sakata, Akihiko Kawano, Hiroki Kagawa
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Patent number: 5154252Abstract: A power transmission apparatus for vehicles for transmitting a driving force by coupling an input shaft and an output shaft of a hydraulic pump to respective driving shafts of front and rear wheels of a four-wheel drive vehicle, wherein a throttle member which is located on the axis of a rotor and a casing interlocking respectively with the input and output shafts, rotated with interlocking with one of the rotor and casing and disposed movably along the axis to change the hydraulic fluid discharge passage area of the hydraulic pump responsive to its movement, and a driving unit which includes a magnetic member coupled coaxially to the throttle member and a coil installed around the magnetic member and supported nonrotatably, and moves the throttle member by movement of the magnetic member in connection with excitation of the coil are provided.Type: GrantFiled: April 12, 1991Date of Patent: October 13, 1992Assignee: Koyo Seiko Co., Ltd.Inventors: Satoshi Kawai, Shuzo Hirakushi, Akihiko Kawano, Hideki Hagashira