Patents by Inventor Shinichi Furusho
Shinichi Furusho 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: 9153403Abstract: The present invention provides an electromagnet device including a horizontal portion of a yoke arranged near one end portion of an iron core, a movable iron piece which pivotably supported on a leading end edge portion of a vertical portion of the yoke which serves as a fulcrum, an end portion of the movable iron piece adapted to be attracted to a magnetic pole portion by a main magnetic circuit, the magnetic pole portion is arranged in the other end portion of the iron core. The main magnetic circuit is formed by applying a voltage to a coil wound around a periphery of the iron core and an auxiliary magnetic circuit formed in parallel with the main magnetic circuit, the auxiliary circuit including a permanent magnet is arranged near the one end portion of the iron core and a magnetic resistance portion, in which a magnetic flux of the permanent magnet is magnetically saturated.Type: GrantFiled: July 30, 2013Date of Patent: October 6, 2015Assignee: OMRON CorporationInventors: Toshifumi Sumino, Masaaki Yamamoto, Ichinori Sakai, Mitsuhiro Kawai, Shinichi Furusho
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Patent number: 9070501Abstract: The present invention provides an electromagnet device which can obtain a desirable attraction force (retention force) between an iron core and a movable iron piece, a method of assembling the electromagnet device and an electromagnetic relay using the electromagnet device, the electromagnet device including an electromagnet block having the iron core being wound by a coil and an auxiliary yoke fixed to one end portion of the iron core, a yoke connected to the one end portion of the iron core via a permanent magnet, the movable iron piece pivotably supported on a pivoting shaft center (serving as a fulcrum) located in an end face edge portion of the yoke so that the movable iron piece pivots on a basis of magnetization and demagnetization of the electromagnet block, where the permanent magnet is located on an extension line of an axial center of the iron core and is interposed between the auxiliary yoke and the yoke.Type: GrantFiled: July 30, 2013Date of Patent: June 30, 2015Assignee: OMRON CorporationInventors: Toshifumi Sumino, Masaaki Yamamoto, Tatsuro Kato, Kazuya Murakami, Harumichi Kitaguchi, Shinichi Furusho
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Publication number: 20140055220Abstract: The present invention provides an electromagnet device including a horizontal portion of a yoke arranged near one end portion of an iron core, a movable iron piece which pivotably supported on a leading end edge portion of a vertical portion of the yoke which serves as a fulcrum, an end portion of the movable iron piece adapted to be attracted to a magnetic pole portion by a main magnetic circuit, the magnetic pole portion is arranged in the other end portion of the iron core. The main magnetic circuit is formed by applying a voltage to a coil wound around a periphery of the iron core and an auxiliary magnetic circuit formed in parallel with the main magnetic circuit, the auxiliary circuit including a permanent magnet is arranged near the one end portion of the iron core and a magnetic resistance portion, in which a magnetic flux of the permanent magnet is magnetically saturated.Type: ApplicationFiled: July 30, 2013Publication date: February 27, 2014Applicant: Omron CorporationInventors: Toshifumi SUMINO, Masaaki YAMAMOTO, Ichinori SAKAI, Mitsuhiro KAWAI, Shinichi FURUSHO
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Publication number: 20140055223Abstract: The present invention provides an electromagnet device which can obtain a desirable attraction force (retention force) between an iron core and a movable iron piece, a method of assembling the electromagnet device and an electromagnetic relay using the electromagnet device, the electromagnet device including an electromagnet block having the iron core being wound by a coil and an auxiliary yoke fixed to one end portion of the iron core, a yoke connected to the one end portion of the iron core via a permanent magnet, the movable iron piece pivotably supported on a pivoting shaft center (serving as a fulcrum) located in an end face edge portion of the yoke so that the movable iron piece pivots on a basis of magnetization and demagnetization of the electromagnet block, where the permanent magnet is located on an extension line of an axial center of the iron core and is interposed between the auxiliary yoke and the yoke.Type: ApplicationFiled: July 30, 2013Publication date: February 27, 2014Applicant: OMRON CORPORATIONInventors: Toshifumi SUMINO, Masaaki YAMAMOTO, Tatsuro KATO, Kazuya MURAKAMI, Harumichi KITAGUCHI, Shinichi FURUSHO
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Patent number: 8212636Abstract: An electromagnetic relay having a high positioning accuracy of a movable iron piece and little variation in operating characteristics. A pair of upper and lower rotating shaft convex portions are provided at one end of a movable iron piece along the same shaft center. The pair of upper and lower rotating shaft convex portions are rotatably supported by a base and a spool of an electromagnetic block mounted on the base respectively. A movable contact piece is driven by the movable iron piece rotated by magnetization or demagnetization of the electromagnetic block to open or close a contact. One end of the spool has a shaft hole in which the upper rotating shaft convex portion of the movable iron piece is inserted.Type: GrantFiled: February 26, 2010Date of Patent: July 3, 2012Assignee: Omron CorporationInventors: Koji Fujimoto, Shinichi Furusho, Akifumi Fujino
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Patent number: 8183963Abstract: A electromagnetic relay in which bad electrical contact and failure of operation are prevented even when shavings are produced while an iron core is press-fitted into and mounted on a base. The electromagnetic relay includes an electromagnetic block supported by press-fitting both ends of an iron core of the electromagnetic block into an upper surface of a base and open or close a contact by a movable iron piece rotated by magnetization or demagnetization of the iron core with a coil, where shaving receptacles are made by forming separating ribs adjacent to at least one side of press-fit projections that are formed in press-fit concave portions provided on the upper surface of the base.Type: GrantFiled: February 26, 2010Date of Patent: May 22, 2012Assignee: OMRON CorporationInventors: Koji Fujimoto, Shinichi Furusho, Akifumi Fujino
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Publication number: 20100225428Abstract: An electromagnetic relay having a high positioning accuracy of a movable iron piece and little variation in operating characteristics. A pair of upper and lower rotating shaft convex portions are provided at one end of a movable iron piece along the same shaft center. The pair of upper and lower rotating shaft convex portions are rotatably supported by a base and a spool of an electromagnetic block mounted on the base respectively. A movable contact piece is driven by the movable iron piece rotated by magnetization or demagnetization of the electromagnetic block to open or close a contact. One end of the spool has a shaft hole in which the upper rotating shaft convex portion of the movable iron piece is inserted.Type: ApplicationFiled: February 26, 2010Publication date: September 9, 2010Applicant: OMRON CorporationInventors: Koji FUJIMOTO, Shinichi Furusho, Akifumi Fujino
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Publication number: 20100225427Abstract: A electromagnetic relay in which bad electrical contact and failure of operation are prevented even when shavings are produced while an iron core is press-fitted into and mounted on a base. The electromagnetic relay includes an electromagnetic block supported by press-fitting both ends of an iron core of the electromagnetic block into an upper surface of a base and open or close a contact by a movable iron piece rotated by magnetization or demagnetization of the iron core with a coil, where shaving receptacles are made by forming separating ribs adjacent to at least one side of press-fit projections that are formed in press-fit concave portions provided on the upper surface of the base.Type: ApplicationFiled: February 26, 2010Publication date: September 9, 2010Applicant: OMRON CorporationInventors: Koji FUJIMOTO, Shinichi Furusho, Akifumi Fujino
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Publication number: 20090267715Abstract: An electromagnetic relay capable of smoothly rotating a movable iron member by eliminating the effect of foreign matters produced on the contact surface of the movable iron piece on a core even if the drive voltage of an electromagnetic block is small. The attracting surface (12) of the movable iron piece (11) is attracted to and separated from the magnetic pole surface (8b) of the core (5) by magnetizing and demagnetizing the electromagnetic block (2) formed by wrapping a coil (7) around the core (5) to open and close a contact by driving a contact block (3). A foreign matter turnout part (13) is formed at at least either of the attraction face (12) of the movable iron piece (11) and the magnetic pole surface (8b) of the core (17).Type: ApplicationFiled: August 22, 2006Publication date: October 29, 2009Applicant: OMRON CORPORATIONInventors: Norio Fukui, Shinichi Furusho, Ryota Minowa
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Patent number: D553576Type: GrantFiled: April 27, 2006Date of Patent: October 23, 2007Assignee: Omron CorporationInventors: Daisuke Nakao, Shinichi Furusho
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Patent number: D562258Type: GrantFiled: June 22, 2007Date of Patent: February 19, 2008Assignee: Omron CorporationInventors: Daisuke Nakao, Shinichi Furusho