Patents by Inventor Akifumi Sato
Akifumi Sato 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: 11928544Abstract: An article management system includes an acquirer and a management unit. The acquirer is configured to acquire identification information and management information. The identification information is information read from an electronic tag by the reading device in each of a plurality of bases in a distribution channel for an article, the electronic tag being attached to the article and storing the identification information. The management information is information collected in association with the identification information in a corresponding one of the plurality of bases, the management information relating to management of the article. The management unit is configured to manage the article with reference to the identification information and the management information which are acquired by the acquirer in each of the plurality of bases.Type: GrantFiled: November 15, 2022Date of Patent: March 12, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Shinichi Okada, Akifumi Nagao, Kou Inoue, Takaaki Sato
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Patent number: 8717127Abstract: A molded case houses switching parts and includes a case main body and a cover placed on an upper portion of the case main body. The case main body includes a bottom portion case that forms a bottom portion of a circuit breaker and an intermediate case, placed on an upper portion of the bottom portion case, having a dividing wall that blocks off a space between the intermediate case and the bottom portion case. A power source side terminal block and second movable contact are fitted inside the bottom portion case, and a first movable contact, the load side terminal block, the contact portion, and the arc extinguishing chamber are fitted inside the intermediate case.Type: GrantFiled: September 12, 2011Date of Patent: May 6, 2014Assignee: Fuji Electric FA Components & Systems Co., Ltd.Inventors: Shinichiro Ando, Koji Asakawa, Akifumi Sato, W. P. Hemantha Desilva, Tomoo Yamazaki
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Publication number: 20140048513Abstract: It is possible to extend an arc as far as an arc extinguishing chamber without increasing an opening distance of a movable contact, and to increase an arc voltage, thus improving the breaking performance, without changing a switching mechanism or increasing a size of the external form of a circuit breaker. A circuit breaker includes a breaking portion having a fixed contact and movable contact, and an arc extinguishing chamber disposed so as to enclose the breaking portion. An insulating arm made of an insulator is provided to be capable of advancing into and withdrawing from the space between contact points of the fixed contact and movable contact. Further, the insulating arm advances to a position between the contact points when the movable contact carries out an opening operation, and withdraws from the space between the contact points when the movable contact carries out a closing operation.Type: ApplicationFiled: July 2, 2013Publication date: February 20, 2014Inventors: Yutaka SATO, Akifumi SATO
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Publication number: 20130162377Abstract: A molded case housing each part is configured of a case main body (54) and a cover (55) placed on an upper portion of the case main body, the case main body (54) is configured of a bottom portion case (56) that forms a bottom portion of a circuit breaker and an intermediate case (57), placed on an upper portion of the bottom portion case, having a dividing wall that blocks off a space between the intermediate case and the bottom portion case. A power source side terminal block (3) and second movable contact (4) are fitted inside the bottom portion case, and a first movable contact (5), the load side terminal block (9), the contact portion (52), and the arc extinguishing chamber (6) are fitted inside the intermediate case.Type: ApplicationFiled: September 12, 2011Publication date: June 27, 2013Inventors: Shinichiro Ando, Koji Asakawa, Akifumi Sato, W. P. Hemantha Desilva, Tomoo Yamazaki
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Patent number: 7535327Abstract: A circuit breaker includes a main case containing a contactor section, an arc-extinguishing device and an overcurrent tripping device; a middle cover laid on the main case, the middle cover having in a central section thereof a recess partitioned with a bottom wall for containing a switching mechanism and at least one interior attachment; and a top cover covering the top side of the recess in the middle cover. The main case, the middle cover and the top cover are arranged to be dividable from one another. The middle cover has an auxiliary cover, covering the switching mechanism, and the auxiliary cover has the top cover mounted thereon.Type: GrantFiled: July 25, 2006Date of Patent: May 19, 2009Assignee: Fuji Electric FA Components & Systems Co., Ltd.Inventors: W. P. Hemantha Desilva, Koji Asakawa, Hideto Yamagata, Akifumi Sato, Yasuhiro Takahashi
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Patent number: 7187258Abstract: A circuit breaker includes an elongated movable contact having a contact at one end thereof for flowing a current therethrough and the other end rotatably supported with a holder, and a protection cover made of an insulating material for covering and protecting a movable contact from short circuit and discharge. The protection cover is made of only the insulating material, covers the movable contact, and has elasticity to tightly hold the movable contact.Type: GrantFiled: June 7, 2005Date of Patent: March 6, 2007Assignee: Fuji Electric FA Components & Systems Co., Ltd.Inventors: Tomoo Yamazaki, Mitsuhiro Mitsushige, Koji Asakawa, Hideto Yamagata, Akifumi Sato
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Publication number: 20070035367Abstract: A circuit breaker includes a main case containing a contactor section, an arc-extinguishing device and an overcurrent tripping device; a middle cover laid on the main case, the middle cover having in a central section thereof a recess partitioned with a bottom wall for containing a switching mechanism and at least one interior attachment; and a top cover covering the top side of the recess in the middle cover. The main case, the middle cover and the top cover are arranged to be dividable from one another. The middle cover has an auxiliary cover, covering the switching mechanism, and the auxiliary cover has the top cover mounted thereon.Type: ApplicationFiled: July 25, 2006Publication date: February 15, 2007Applicant: FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD.Inventors: W.P. Desilva, Koji Asakawa, Hideto Yamagata, Akifumi Sato, Yasuhiro Takahashi
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Patent number: 7154062Abstract: A circuit breaker has a molded case with a main case, a middle cover and a top cover being dividable from one another. The main case contains contactor sections, each including a stationary contactor and a movable contactor for a pole corresponding to each phase in a polyphase circuit, an arc-extinguishing device, an overcurrent tripping device actuating a tripping mechanism by detecting an overcurrent, and a zero-phase current transformer detecting a leak current. The middle cover has a partitioned recess for containing a switching mechanism and the tripping mechanism. Interpole partitions, surrounding the contactor section and the arc-extinguishing device, and a screen-like intermediate partition, isolating the contactor sections from the overcurrent tripping device, are formed with the middle cover laid on the main case. A wall with gas outlets for an arc gas is provided on the back of the arc-extinguishing devices.Type: GrantFiled: December 22, 2005Date of Patent: December 26, 2006Assignee: Fuji Electric FA Components & Systems Co., Ltd.Inventors: Koji Asakawa, Mitsuhiro Mitsushige, Yasuhiro Takahashi, Akifumi Sato, Hisanobu Asano
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Publication number: 20060191873Abstract: A circuit breaker has a molded case with a main case, a middle cover and a top cover being dividable from one another. The main case contains contactor sections, each including a stationary contactor and a movable contactor for a pole corresponding to each phase in a polyphase circuit, an arc-extinguishing device, an overcurrent tripping device actuating a tripping mechanism by detecting an overcurrent, and a zero-phase current transformer detecting a leak current. The middle cover has a partitioned recess for containing a switching mechanism and the tripping mechanism. Interpole partitions, surrounding the contactor section and the arc-extinguishing device, and a screen-like intermediate partition, isolating the contactor sections from the overcurrent tripping device, are formed with the middle cover laid on the main case. A wall with gas outlets for an arc gas is provided on the back of the arc-extinguishing devices.Type: ApplicationFiled: December 22, 2005Publication date: August 31, 2006Applicant: Fuji Electric FA Components & Systems Co., Ltd.Inventors: Koji Asakawa, Mitsuhiro Mitsushige, Yasuhiro Takahashi, Akifumi Sato, Hisanobu Asano
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Publication number: 20050275493Abstract: A circuit breaker includes an elongated movable contact having a contact at one end thereof for flowing a current therethrough and the other end rotatably supported with a holder, and a protection cover made of an insulating material for covering and protecting a movable contact from short circuit and discharge. The protection cover is made of only the insulating material, covers the movable contact, and has elasticity to tightly hold the movable contact.Type: ApplicationFiled: June 7, 2005Publication date: December 15, 2005Applicant: FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD.Inventors: Tomoo Yamazaki, Mitsuhiro Mitsushige, Koji Asakawa, Hideto Yamagata, Akifumi Sato
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Patent number: 6975190Abstract: A contactor device of a repulsion-type circuit breaker includes a first movable contactor with a first movable contact to be driven by an open-close mechanism; a fixed contactor; a second movable contactor having second and third movable contacts; a first contact spring for urging the first movable contactor toward the second movable contactor; and a second contact spring for urging the second movable contactor toward the first movable contactor and the fixed contactor. The first movable contactor, fixed contactor, and second movable contactor are arranged such that when an over-current flows, an electromagnetic repulsive force is generated so that the first and second movable contactors are rotated against the first and second contact springs to open between the first movable contact and the second movable contact and between the fixed contact and the third movable contact before the open-close mechanism opens the first movable contact.Type: GrantFiled: September 14, 2004Date of Patent: December 13, 2005Assignee: Fuji Electric FA Components & Systems Co., Ltd.Inventors: Akifumi Sato, Koji Asakawa, Mitsuhiro Mitsushige, Yasuhiro Takahashi, Hideto Yamagata
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Publication number: 20050184837Abstract: A contactor device of a repulsion-type circuit breaker includes a first movable contactor with a first movable contact to be driven by an open-close mechanism; a fixed contactor; a second movable contactor having second and third movable contacts; a first contact spring for urging the first movable contactor toward the second movable contactor; and a second contact spring for urging the second movable contactor toward the first movable contactor and the fixed contactor. The first movable contactor, fixed contactor, and second movable contactor are arranged such that when an over-current flows, an electromagnetic repulsive force is generated so that the first and second movable contactors are rotated against the first and second contact springs to open between the first movable contact and the second movable contact and between the fixed contact and the third movable contact before the open-close mechanism opens the first movable contact.Type: ApplicationFiled: September 14, 2004Publication date: August 25, 2005Inventors: Akifumi Sato, Koji Asakawa, Mitsuhiro Mitsushige, Yasuhiro Takahashi, Hideto Yamagata