Patents by Inventor Yuya SAKURAI
Yuya SAKURAI 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).
-
Publication number: 20230210012Abstract: A piezoelectric device includes a base member, a first conductive film arranged above the base member in contact with an upper surface of the base member, a piezoelectric film arranged above the first conductive film in contact with an upper surface of the first conductive film, a second conductive film arranged on the piezoelectric film, and an insulating portion provided inside a trench penetrating through the piezoelectric film and the first conductive film. The insulating portion has a higher electrical resistivity than the piezoelectric film.Type: ApplicationFiled: October 25, 2022Publication date: June 29, 2023Inventors: YUYA SAKURAI, HIDEO YAMADA, MEGUMI SUZUKI, TETSUYA ENOMOTO, AKIHIKO TESHIGAHARA, TAKAHIDE USUI, NAOKATSU IKEGAMI, SHUJI KATAKAMI
-
Patent number: 10446348Abstract: There is provided an electromagnetic contactor that ensures appropriately preventing a foreign matter from invading an auxiliary contact mechanism housing chamber from a main contact mechanism housing chamber via a through-hole on a partition wall; and a foreign matter from invading the main contact mechanism housing chamber from the auxiliary contact mechanism housing chamber via the through-hole on the partition wall. With an electromagnetic contactor (1), a main contact mechanism housing chamber (A) and an auxiliary contact mechanism housing chamber (B) are partitioned by a partition wall (10). The partition wall (10) has a through-hole (10a) through which a coupling shaft (34) is inserted. A foreign matter invasion prevention mechanism (60) is provided at a peripheral area of the through-hole (10a).Type: GrantFiled: January 23, 2018Date of Patent: October 15, 2019Assignee: FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD.Inventors: Yuki Tashima, Kouetsu Takaya, Hideo Adachi, Yasuhiro Naka, Yuya Sakurai
-
Publication number: 20190088432Abstract: A contact device includes a main contact mechanism including a pair of main fixed contacts and a main movable contact elastically supported by a movable shaft and disposed to contact with and separate from the pair of main fixed contacts; an auxiliary contact mechanism disposed at a different position from the main contact mechanism, and including a pair of auxiliary fixed contacts and an auxiliary movable contact disposed in an insulating auxiliary contact holding member connected to the movable shaft to contact with and separate from the pair of auxiliary fixed contacts; and a contact housing portion housing the main contact mechanism and the auxiliary contact mechanism. The movable shaft includes a main contact support portion for supporting the main movable contact, and an auxiliary contact support portion for supporting the auxiliary contact holding member. The main contact support portion is divided from the auxiliary contact support portion.Type: ApplicationFiled: November 19, 2018Publication date: March 21, 2019Inventors: Yuki TASHIMA, Kouetsu TAKAYA, Hideo ADACHI, Yasuhiro NAKA, Yuya SAKURAI, Koujun KONISHI
-
Publication number: 20190066956Abstract: There is provided a contact device including an accommodating case that accommodates a main contact point mechanism having fixed contacts, an external terminal that is disposed outside the accommodating case, and a terminal board that passes through the accommodating case and electrically connects the fixed contacts and the external terminal together. The terminal board has a bent portion surface-contacting with side surfaces of the accommodating case.Type: ApplicationFiled: October 25, 2018Publication date: February 28, 2019Inventors: Koujun KONISHI, Yuya SAKURAI, Hideo ADACHI, Yasuhiro NAKA, Kouetsu TAKAYA
-
Patent number: 10170261Abstract: The contact device includes a main contact mechanism that includes a pair of main fixed contacts and a main movable contact elastically supported by a movable shaft and disposed to be contactable with and separable from the pair of main fixed contacts, an auxiliary contact mechanism that includes a pair of auxiliary fixed contacts and auxiliary movable contacts disposed in an auxiliary contact holding member connected to the movable shaft so as to be contactable with and separable from the pair of auxiliary fixed contacts, and a contact housing portion that houses the main contact mechanism and the auxiliary contact mechanism. The movable shaft has a main contact support portion supporting the main movable contact and an auxiliary contact support portion supporting the auxiliary contact holding member. The main contact support portion and the auxiliary contact support portion are connected to each other via the auxiliary contact holding member.Type: GrantFiled: March 15, 2017Date of Patent: January 1, 2019Assignee: FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD.Inventors: Yuki Tashima, Kouetsu Takaya, Hideo Adachi, Yasuhiro Naka, Yuya Sakurai, Koujun Konishi
-
Publication number: 20180269017Abstract: A contact device includes a main contact mechanism including a pair of main stationary contact members and a main movable contact member; an auxiliary contact mechanism disposed at a position different from that of the main contact mechanism and including auxiliary stationary contact members and auxiliary movable contact members; a movable shaft configured to operate the main movable contact member and the auxiliary movable contact member in conjunction with each other; rod-shaped auxiliary terminals electrically connected to the auxiliary stationary contact members; a cover plate having holes through which the auxiliary terminals penetrate; an insulating case configured to house the main contact mechanism and the auxiliary contact mechanism and including an auxiliary terminal case section configured to separate the main contact mechanism and the auxiliary contact mechanism from each other; and a cylindrical body covering the insulating case exteriorly and joined to the cover plate.Type: ApplicationFiled: May 22, 2018Publication date: September 20, 2018Inventors: Koujun KONISHI, Yuki TASHIMA, Hideo ADACHI, Yasuhiro NAKA, Kouetsu TAKAYA, Yuya SAKURAI
-
Publication number: 20180158635Abstract: There is provided an electromagnetic contactor that ensures appropriately preventing a foreign matter from invading an auxiliary contact mechanism housing chamber from a main contact mechanism housing chamber via a through-hole on a partition wall; and a foreign matter from invading the main contact mechanism housing chamber from the auxiliary contact mechanism housing chamber via the through-hole on the partition wall. With an electromagnetic contactor (1), a main contact mechanism housing chamber (A) and an auxiliary contact mechanism housing chamber (B) are partitioned by a partition wall (10). The partition wall (10) has a through-hole (10a) through which a coupling shaft (34) is inserted. A foreign matter invasion prevention mechanism (60) is provided at a peripheral area of the through-hole (10a).Type: ApplicationFiled: January 23, 2018Publication date: June 7, 2018Inventors: Yuki TASHIMA, Kouetsu TAKAYA, Hideo ADACHI, Yasuhiro NAKA, Yuya SAKURAI
-
Publication number: 20180144894Abstract: A contact device and an electromagnetic contactor using the contact device. The contact device has: a main contact including a pair of fixed contact elements arranged at a predetermined distance from each other and a movable contact element elastically supported by a connecting shaft and arranged to be contactable with and separable from the pair of fixed contact elements; an auxiliary contact arranged at a position different from the main contact and including a pair of fixed contacts arranged at a predetermined distance from each other and a movable contact connected to the connecting shaft and arranged to be contactable with and separable from the pair of fixed contacts; a contact housing configured to house the main contact and the auxiliary contact; and external connection terminals electrically connected to the pair of fixed contacts of the auxiliary contact and projecting from the contact housing.Type: ApplicationFiled: January 22, 2018Publication date: May 24, 2018Applicant: FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD.Inventors: Kouetsu TAKAYA, Yuki Tashima, Hideo Adachi, Yasuhiro Naka, Yuya Sakurai
-
Publication number: 20170358413Abstract: The contact device includes a main contact mechanism that includes a pair of main fixed contacts and a main movable contact elastically supported by a movable shaft and disposed to be contactable with and separable from the pair of main fixed contacts, an auxiliary contact mechanism that includes a pair of auxiliary fixed contacts and auxiliary movable contacts disposed in an auxiliary contact holding member connected to the movable shaft so as to be contactable with and separable from the pair of auxiliary fixed contacts, and a contact housing portion that houses the main contact mechanism and the auxiliary contact mechanism. The movable shaft has a main contact support portion supporting the main movable contact and an auxiliary contact support portion supporting the auxiliary contact holding member. The main contact support portion and the auxiliary contact support portion are connected to each other via the auxiliary contact holding member.Type: ApplicationFiled: March 15, 2017Publication date: December 14, 2017Inventors: Yuki TASHIMA, Kouetsu TAKAYA, Hideo ADACHI, Yasuhiro NAKA, Yuya SAKURAI, Koujun KONISHI
-
Patent number: 9416504Abstract: A bridge pier structure includes a damper having damping characteristics, a substructure joined with a lower end portion of the damper, and a pillar member provided upright on the substructure, a side surface of the pillar member being joined with an upper end portion of the damper. The damper is substantially parallel to the side surface of the pillar member.Type: GrantFiled: November 6, 2015Date of Patent: August 16, 2016Assignee: JFE Civil Engineering & Construction CorporationInventors: Keisuke Shiota, Kazuaki Miyagawa, Hiroyuki Imashio, Hitoshi Naito, Yuya Sakurai, Yasuke Imano
-
Publication number: 20160222608Abstract: A bridge pier structure includes a damper having damping characteristics, a substructure joined with a lower end portion of the damper, and a pillar member provided upright on the substructure, a side surface of the pillar member being joined with an upper end portion of the damper. The damper is substantially parallel to the side surface of the pillar member.Type: ApplicationFiled: November 6, 2015Publication date: August 4, 2016Applicant: JFE CIVIL ENGINEERING & CONSTRUCTION CORPORATIONInventors: Keisuke SHIOTA, Kazuaki MIYAGAWA, Hiroyuki IMASHIO, Hitoshi NAITO, Yuya SAKURAI, Yasuke IMANO
-
Patent number: D826869Type: GrantFiled: June 19, 2017Date of Patent: August 28, 2018Assignee: FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD.Inventors: Yuya Sakurai, Yasuhiro Naka, Hideo Adachi, Yuji Shiba, Yuki Tashima
-
Patent number: D869401Type: GrantFiled: October 2, 2018Date of Patent: December 10, 2019Assignee: FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD.Inventors: Yuya Sakurai, Yasuhiro Naka, Hideo Adachi, Koujun Konishi, Mitsuya Itou
-
Patent number: D924817Type: GrantFiled: April 1, 2019Date of Patent: July 13, 2021Assignee: FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD.Inventors: Yuya Sakurai, Yasuhiro Naka, Hideo Adachi, Mitsuya Itou