Patents by Inventor Akifumi Fujino
Akifumi Fujino 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: 9401256Abstract: An electromagnetic relay has an iron core having legs at both ends and a coil wound therearound to form an electromagnet, a movable iron piece that pivotally supports a pivoting shaft along one leg of the iron core and causes a tip of a pivoting arm extended from a side edge of the pivoting shaft toward the other leg of the iron core to face the other leg of the iron core in a contactable and separable manner, and a card whose side facing the movable iron piece is in contact with the pivoting arm of the movable iron piece. The movable iron piece that pivots based on the excitation and degaussing of the electromagnet presses the card to drive a contact mechanism.Type: GrantFiled: April 9, 2013Date of Patent: July 26, 2016Assignee: OMRON CorporationInventors: Koji Fujimoto, Akifumi Fujino, Bin Wang, Kaori Hirano, Ayumi Noguchi
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Publication number: 20150116061Abstract: An electromagnetic relay has an iron core having legs at both ends and a coil wound therearound to form an electromagnet, a movable iron piece that pivotally supports a pivoting shaft along one leg of the iron core and causes a tip of a pivoting arm extended from a side edge of the pivoting shaft toward the other leg of the iron core to face the other leg of the iron core in a contactable and separable manner, and a card whose side facing the movable iron piece is in contact with the pivoting arm of the movable iron piece. The movable iron piece that pivots based on the excitation and degaussing of the electromagnet presses the card to drive a contact mechanism.Type: ApplicationFiled: April 9, 2013Publication date: April 30, 2015Applicant: OMRON CORPORATIONInventors: Koji Fujimoto, Akifumi Fujino, Bin Wang, Kaori Hirano, Ayumi Noguchi
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Patent number: 8922307Abstract: An electromagnetic relay includes an electromagnetic part, a movable iron piece, a contact driving part, a contact which is opened and closed by driving the contact driving part with a card disposed between the movable iron piece and the contact driving part. Particularly, the card is disposed between the insulating wall and the contact driving part, a driving projection projected onto an inward surface side opposed to the insulating wall of the card is inserted in and projected from a manipulation hole made in the insulating wall, and the driving projection of the card is pressed by the movable iron piece that is operated based on excitation and demagnetization of the electromagnetic part.Type: GrantFiled: April 9, 2013Date of Patent: December 30, 2014Assignee: Omron CorporationInventors: Koji Fujimoto, Akifumi Fujino, Bin Wang, Kaori Hirano, Ayumi Noguchi
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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: 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: 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