Patents Assigned to Shizuki Electric Co., Inc.
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Patent number: 11978593Abstract: A film capacitor 1 that includes: a capacitor element including a metallized film with a resin film and a metal layer on a surface of the resin film; an outer case that houses the capacitor element; and a filling resin that fills a space between the capacitor element and the outer case, wherein the outer case includes a resin composition that contains a liquid crystal polymer and an inorganic filler, and an amount of exposure of the inorganic filler from an outer surface of the outer case is 5% to 90%.Type: GrantFiled: December 17, 2021Date of Patent: May 7, 2024Assignees: MURATA MANUFACTURING CO., LTD., SHIZUKI ELECTRIC CO., INC.Inventors: Satoru Jogan, Kimiaki Kikuchi
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Patent number: 11948748Abstract: A film capacitor that includes a dielectric resin film containing a cured product of a first organic material and a second organic material; and a metal layer on at least one surface of the dielectric resin film. The first organic material contains an organic polymer having a hydroxy group and a benzene ring in a repeating unit; the second organic material contains 4,4?-diphenylmethane diisocyanate, a modified product of 4,4?-diphenylmethane diisocyanate, or a mixture thereof; and 400 ppm to 700 ppm of chlorine ions and 300 ppm to 500 ppm of phosphorus ions are present inside the dielectric resin film.Type: GrantFiled: May 13, 2022Date of Patent: April 2, 2024Assignees: MURATA MANUFACTURING CO., LTD., SHIZUKI ELECTRIC CO., INC.Inventors: Tomoki Inakura, Tomomichi Ichikawa, Atsushi Kawabata
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Patent number: 11791099Abstract: A film capacitor that includes a capacitor element including one or more wound or laminated metallized films, each metallized film including a resin film and a metal layer on a surface of the resin film; an outer case that houses the capacitor element; and a filling resin that fills a space between the capacitor element and the outer case, wherein the outer case is made of a resin composition containing a liquid crystal polymer and an inorganic filler.Type: GrantFiled: May 27, 2020Date of Patent: October 17, 2023Assignees: MURATA MANUFACTURING CO., LTD., SHIZUKI ELECTRIC CO., INC.Inventors: Satoru Jogan, Shinichi Kobayashi, Tomomichi Ichikawa, Satoshi Kamei, Kimiaki Kikuchi
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Patent number: 11437190Abstract: A film capacitor that includes a capacitor element having a metallized film including a resin film and a metal layer on a surface of the resin film; an outer case that houses the capacitor element; and a filling resin that fills a space between the capacitor element and the outer case, wherein a surface free energy of an inner surface of the outer case in contact with the filling resin is 44 mN/m or less.Type: GrantFiled: May 27, 2020Date of Patent: September 6, 2022Assignees: MURATA MANUFACTURING CO., LTD., SHIZUKI ELECTRIC CO., INC.Inventors: Ryo Majima, Takuya Sakamoto, Satoru Jogan
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Patent number: 11430610Abstract: A film capacitor that includes a laminate having a first resin film including a first metal layer on a surface thereof alternately laminated with a second resin film including a second metal layer on a surface thereof, the laminate having opposed first and second ends, a first external electrode on the first end of the laminate, and a second external electrode on the second end of the laminate, wherein the first resin film protrudes more than the second resin film by a first protruding length of 0.5 mm to 3 mm on the first end of the laminate, and the first resin film has a Young's modulus at 150° C. of 0.6 GPa or more in a direction perpendicular to a lamination direction of the laminate and parallel to a direction from the first end to the second end of the laminate.Type: GrantFiled: May 13, 2020Date of Patent: August 30, 2022Assignees: MURATA MANUFACTURING CO., LTD., SHIZUKI ELECTRIC CO., INC.Inventors: Satoru Jogan, Tomomichi Ichikawa, Shinichi Kobayashi, Tomoki Inakura, Kimiaki Kikuchi, Satoshi Kamei, Kyosuke Yoshida
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Patent number: 10062515Abstract: This capacitor structure is provided with a capacitor body in which a plurality of wound-type capacitors are housed in a housing, and which is fixed to a fixing object via a fastening tool (a cylindrical member and a fixing bolt). The capacitor structure is configured such that the capacitor body is fixed to the fixing object by inserting the fastening tool into at least one of a gap formed between the outer peripheral surfaces of the wound-type capacitors or gaps formed between the outer peripheral surfaces of the wound-type capacitors and the inner wall of the housing, in a state in which the wound-type capacitors are installed side by side on the floor of the housing.Type: GrantFiled: January 14, 2016Date of Patent: August 28, 2018Assignees: CALSONIC KANSEI CORPORATION, SHIZUKI ELECTRIC CO., INC.Inventors: Gen Okuzuka, Masanori Ishida, Yuji Shiomi
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Publication number: 20180019062Abstract: This capacitor structure is provided with a capacitor body in which a plurality of wound-type capacitors are housed in a housing, and which is fixed to a fixing object via a fastening tool (a cylindrical member and a fixing bolt). The capacitor structure is configured such that the capacitor body is fixed to the fixing object by inserting the fastening tool into at least one of a gap formed between the outer peripheral surfaces of the wound-type capacitors or gaps formed between the outer peripheral surfaces of the wound-type capacitors and the inner wall of the housing, in a state in which the wound-type capacitors are installed side by side on the floor of the housing.Type: ApplicationFiled: January 14, 2016Publication date: January 18, 2018Applicants: CALSONIC KANSEI CORPORATION, SHIZUKI ELECTRIC CO., INC.Inventors: Gen OKUZUKA, Masanori ISHIDA, Yuji SHIOMI
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Publication number: 20110292686Abstract: A capacitor circuit includes a first capacitor line including a film capacitor and a second capacitor line including a ceramic capacitor that are connected in parallel with each other. The second capacitor line includes an inductance element that is connected in series with the ceramic capacitor. The inductance element is set to a value such that a series resonant frequency of the first capacitor line and a series resonant frequency of the second capacitor line are matched.Type: ApplicationFiled: December 2, 2010Publication date: December 1, 2011Applicants: SHIZUKI ELECTRIC CO., INC., MURATA MANUFACTURING CO., LTD.Inventors: Shoji OKA, Shigeki NISHIYAMA, Shinichi KOBAYASHI, Kazuyoshi OBARA
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Patent number: 4832983Abstract: A process for producing a metallized plastic film comprising the steps of applying a masking oil supplied from an oil supply source to the surface of a rubber roll drivingly in rotation and having formed on its surface projections or indentations in conformity with the margin pattern to be formed, applying the masking oil on the surface of the rubber roll to the surface of a plastic film in a pattern substantially similar to the margin pattern, and forming a vacuum-evaporated metal film on the oil bearing surface of the plastic film. Margins can be formed in a desired pattern efficiently by this process.Type: GrantFiled: March 5, 1987Date of Patent: May 23, 1989Assignee: Shizuki Electric Co., Inc.Inventors: Kyosuke Nagatomi, Teruki Kajiwara, Hisashi Ookuma, Ryo Tachibana
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Patent number: 4327395Abstract: A container contains a metallized polypropylene capacitor that has electronegative gas occupying a majority of the space between its plates. The electronegative gas is not combined with a liquid. The remaining space in the container is occupied by coolant oil which can contain a gas.Type: GrantFiled: September 15, 1980Date of Patent: April 27, 1982Assignee: Shizuki Electric Co., Inc.Inventors: Takayuki Yagitani, Osamu Ebisu