Patents by Inventor Yoshifumi Chida
Yoshifumi Chida 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: 8305167Abstract: To provide a twin-type power electromagnetic relay having high reliability, having a reduced size and low mounting height, and suitable for surface mounting. By inserting projections provided in a coil spool, which is a component constituting an electromagnetic relay block, into projection insertion holes 5a and 5b formed in a base plate 5, two electromagnetic relay blocks 4A and 4B are arranged side by side on the base plate 5 such that their central axes are nearly parallel to the base plate. A base protective wall 5c is provided on the base plate 5, and a coil wire winding terminal portion of a spool is covered by the base protective wall and by a fixed terminal protective wall on the fixed terminal block when assembled, preventing foreign matters such as flux from entering between the contacts from the winding terminal portion.Type: GrantFiled: May 12, 2009Date of Patent: November 6, 2012Assignee: NEC Tokin CorporationInventors: Yoshifumi Chida, Kei Chiba
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Publication number: 20110109410Abstract: To provide a twin-type power electromagnetic relay having high reliability, having a reduced size and low mounting height, and suitable for surface mounting. By inserting projections provided in a coil spool, which is a component constituting an electromagnetic relay block, into projection insertion holes 5a and 5b formed in a base plate 5, two electromagnetic relay blocks 4A and 4B are arranged side by side on the base plate 5 such that their central axes are nearly parallel to the base plate. A base protective wall 5c is provided on the base plate 5, and a coil wire winding terminal portion of a spool is covered by the base protective wall and by a fixed terminal protective wall on the fixed terminal block when assembled, preventing foreign matters such as flux from entering between the contacts from the winding terminal portion.Type: ApplicationFiled: May 12, 2009Publication date: May 12, 2011Applicant: NEC TOKIN CORPORATIONInventors: Yoshifumi Chida, Kei Chiba
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Patent number: 7372350Abstract: An electromagnetic relay is provided which is small in size and is capable of controlling two circuits of an ordinarily-open contact, which has a large current-carrying capacity and high interrupting capability, and which is excellent in resistance against shock and vibration. Movable contactors are held, through bow-shaped movable contactor springs, to two -shaped holding frames each being electrically separated and being mechanically connected via a card made of a highly heat-resistant resin in a card block. Thick-plate shaped movable contacts, which are attached to the movable contactors in a fixed manner, are electrically connected or disconnected to fixed contacts in a base block, in synchronization with operations of an armature of an electro-magnet block. In order to improve a current-carrying capability and interrupting capability, there are provided two pieces of ordinarily-open contacts which are connected in series to each other, and between which an interval is doubled, in each of two circuits.Type: GrantFiled: May 26, 2005Date of Patent: May 13, 2008Assignees: NEC Tokin Corporation, NEC Tokin Iwate, Ltd.Inventors: Yoshifumi Chida, Kei Chiba, Tatsumi Ide, Shigeru Kasai
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Publication number: 20050264386Abstract: An electromagnetic relay is provided which is small in size and is capable of controlling two circuits of an ordinarily-open contact, which has a large current-carrying capacity and high interrupting capability, and which is excellent in resistance against shock and vibration. Movable contactors are held, through bow-shaped movable contactor springs, to two -shaped holding frames each being electrically separated and being mechanically connected via a card made of a highly heat-resistant resin in a card block. Thick-plate shaped movable contacts, which are attached to the movable contactors in a fixed manner, are electrically connected or disconnected to fixed contacts in a base block, in synchronization with operations of an armature of an electro-magnet block. In order to improve a current-carrying capability and interrupting capability, there are provided two pieces of ordinarily-open contacts which are connected in series to each other, and between which an interval is doubled, in each of two circuits.Type: ApplicationFiled: May 26, 2005Publication date: December 1, 2005Inventors: Yoshifumi Chida, Kei Chiba, Tatsumi Ide, Shigeru Kasai
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Patent number: 6873232Abstract: An electromagnetic relay has three fixed contact terminal assemblies arrayed in a row at regular intervals, and a movable contact spring assembly having three movable contacts. An armature is caused to swing by turning on and off an exciting current to a coil assembly so that normally-open contact portions are closed and opened. A movable spring of the movable contact spring assembly is branched into three portions on one end side thereof and a substantially U-shaped slit is formed in each of the branched portions so that spring flexible portions and a current-carrying path portion are separately formed in each branched portion. A current-carrying plate is joined to the three current-carrying path portions so that the three movable contacts are electrically connected together.Type: GrantFiled: August 17, 2004Date of Patent: March 29, 2005Assignees: NEC TOKIN Corporation, NEC TOKIN Iwate, Ltd.Inventors: Yoshifumi Chida, Kei Chiba
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Publication number: 20050046527Abstract: An electromagnetic relay has three fixed contact terminal assemblies arrayed in a row at regular intervals, and a movable contact spring assembly having three movable contacts. An armature is caused to swing by turning on and off an exciting current to a coil assembly so that normally-open contact portions are closed and opened. A movable spring of the movable contact spring assembly is branched into three portions on one end side thereof and a substantially U-shaped slit is formed in each of the branched portions so that spring flexible portions and a current-carrying path portion are separately formed in each branched portion. A current-carrying plate is joined to the three current-carrying path portions so that the three movable contacts are electrically connected together.Type: ApplicationFiled: August 17, 2004Publication date: March 3, 2005Applicants: NEC TOKIN Corporation, NEC TOKIN Iwate, Ltd.Inventors: Yoshifumi Chida, Kei Chiba
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Patent number: 5246385Abstract: A connector comprises a socket portion which is subjected to surface treatment and a base portion which is not subjected to the surface treatment, or comprises a socket portion and a base portion subjected to different kinds of surface treatments. The socket and base portions are each provided with a coupling mechanism. The socket and base portions may be easily surface treated independently, after which they are coupled together, thereby forming a connector capable of preventing short circuit arising from surface treatments.Type: GrantFiled: February 27, 1992Date of Patent: September 21, 1993Assignee: NEC CorporationInventors: Yoshifumi Chida, Mituaki Hayashi, Atsushi Kikuchi, Kenichi Hatakeyama