Patents by Inventor Hiroshi Akase
Hiroshi Akase 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: 10619756Abstract: The present disclosure relates to a gas solenoid valve for controlling a flow rate of a gas. The gas solenoid valve includes a valve plug to be displaced in the main body between a closed position where the flow path is closed and an open position where the flow path is opened. The main body includes a retainer and a valve seat. The valve plug includes an armature surface and a valve part, the armature surface being displaced in accordance with the magnetic field, the valve part being formed integrally with the armature surface. The armature surface includes an opposed surface that is opposed to the retainer and contacts with the retainer when the valve plug is in the open position, so as to determine an amount of displacement of the armature surface. At least one of the opposed surface and a surface of the retainer is roughened.Type: GrantFiled: June 29, 2016Date of Patent: April 14, 2020Assignee: NABTESCO CORPORATIONInventors: Hiroshi Akase, Daiki Ogino
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Publication number: 20180202573Abstract: The present disclosure relates to a gas solenoid valve for controlling a flow rate of a gas. The gas solenoid valve includes a valve plug to be displaced in the main body between a closed position where the flow path is closed and an open position where the flow path is opened. The main body includes a retainer and a valve seat. The valve plug includes an armature surface and a valve part, the armature surface being displaced in accordance with the magnetic field, the valve part being formed integrally with the armature surface. The armature surface includes an opposed surface that is opposed to the retainer and contacts with the retainer when the valve plug is in the open position, so as to determine an amount of displacement of the armature surface. At least one of the opposed surface and a surface of the retainer is roughened.Type: ApplicationFiled: June 29, 2016Publication date: July 19, 2018Inventors: Hiroshi AKASE, Daiki OGINO
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Patent number: 9297473Abstract: A coil (96) attracting an armature (80) is housed in a main body part (70). A valve part (82) adapted to rest on and move off a valve seat (74) is formed integral with the armature (80). The valve seat (74) is disposed at a location between a high-pressure path (78) and a low-pressure path (83). When the valve part (82) rests on the valve seat (74), the high-pressure path (78) and the low-pressure path (83) are disconnected from each other, while, when the valve part (82) moves off the valve seat (74), the high-pressure path (78) and the low-pressure path (83) communicate with each other. A through-hole (86) is formed in a portion of the armature (80) through which a smaller amount of magnetic flux from the coil (96) passes. A guide pin (102) secured to the main body part (70) engages with the through-hole (86).Type: GrantFiled: September 24, 2012Date of Patent: March 29, 2016Assignee: NABTESCO CORPORATIONInventors: Nobuyuki Tsuru, Hiroshi Akase
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Publication number: 20140240068Abstract: [Means to Solve Problem] A coil (68) is housed in a main body (70). An inner cylindrical portion (98a) is disposed inward of the coil (68). An armature (80) adapted to be attracted by the coil (68) is disposed, being spaced from the inner cylindrical portion (98a). A magnetic flux concentrating member (100) is disposed on the side of the coil (68) nearer to the armature (80), being spaced from the inner cylindrical portion (98a). The gap between the inner cylindrical portion (98a) and the magnetic flux concentrating member (100) is larger than the gap between the armature (80) and the inner cylindrical member (100).Type: ApplicationFiled: September 24, 2012Publication date: August 28, 2014Inventors: Nobuyuki Tsuru, Hiroshi Akase
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Publication number: 20140225018Abstract: [Means to Solve Problem] A coil (96) attracting an armature (80) is housed in a main body part (70). A valve part (82) adapted to rest on and move off a valve seat (74) is formed integral with the armature (80). The valve seat (74) is disposed at a location between a high-pressure path (78) and a low-pressure path (83). When the valve part (82) rests on the valve seat (74), the high-pressure path (78) and the low-pressure path (83) are disconnected from each other, while, when the valve part (82) moves off the valve seat (74), the high-pressure path (78) and the low-pressure path (83) communicate with each other. A through-hole (86) is formed in a portion of the armature (80) through which a smaller amount of magnetic flux from the coil (96) passes. A guide pin (102) secured to the main body part (70) engages with the through-hole (86).Type: ApplicationFiled: September 24, 2012Publication date: August 14, 2014Applicant: NABTESCO CORPORATIONInventors: Nobuyuki Tsuru, Hiroshi Akase
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Patent number: 8542008Abstract: A displacement sensor includes a primary coil (2), secondary coils (4a, 4b), and a movable magnetic core (6) movable with displacement of an object to be measured to cause voltages generated in the secondary coils (4a, 4b) to vary. The secondary coils (4a, 4b) are differentially interconnected. A polyphase signal generating unit (10) generates two-phase component signals having different phases, from a differentially combined output voltage of the secondary coils (4a, 4b). Full-wave rectifying units (16, 18) rectify the polyphase component signals, the rectified polyphase component signals are combined in a combiner (22), and the combiner output is applied to a low-pass filter (24).Type: GrantFiled: October 2, 2007Date of Patent: September 24, 2013Assignees: Shinko Electric Co., Ltd., Nabtesco CorporationInventors: Yasushi Nakano, Hiroshi Akase, Daiju Kaneshiro
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Publication number: 20100072987Abstract: A displacement sensor includes a primary coil (2), secondary coils (4a, 4b), and a movable magnetic core (6) movable with displacement of an object to be measured to cause voltages generated in the secondary coils (4a, 4b) to vary. The secondary coils (4a, 4b) are differentially interconnected. A polyphase signal generating unit (10) generates two-phase component signals having different phases, from a differentially combined output voltage of the secondary coils (4a, 4b). Full-wave rectifying units (16, 18) rectify the polyphase component signals, the rectified polyphase component signals are combined in a combiner (22), and the combiner output is applied to a low-pass filter (24).Type: ApplicationFiled: October 2, 2007Publication date: March 25, 2010Applicants: SHINKO ELECTRIC CO., LTD., NABTESCO CORPORATIONInventors: Yasushi Nakano, Hiroshi Akase, Daiju Kaneshiro