Patents by Inventor Hidetoshi Kasahara
Hidetoshi Kasahara 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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Publication number: 20200018400Abstract: In exemplary embodiment, a seal device 10 that seals between a housing 11 and a rotation shaft 20 passing through the housing 11 includes a floating ring 15 arranged with a gap h with respect to the rotation shaft 20, wherein the floating ring 15 includes an aligning means 18 that contactlessly aligns a position of the floating ring 15. In the seal device, the automatic aligning operation of the seal ring is maintained even upon running for a long time, a clearance between the rotation shaft and the seal ring can be properly held, and the sealing operation by the seal ring and the vibration damping function can be exerted.Type: ApplicationFiled: February 21, 2018Publication date: January 16, 2020Inventors: Yuichiro TOKUNAGA, Hideyuki INOUE, Wataru KIMURA, Tetsuya IGUCHI, Hidetoshi KASAHARA, Jun HIROMATSU, Yasuhiro KUROKI, Ryu KIKUCHI
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Publication number: 20200011425Abstract: In an exemplary embodiment, a seal device 10 for sealing between a housing 11 and a rotating shaft 20 which penetrates through the housing 11 includes a floating ring 15 arranged on the rotating shaft 20 with a gap h therebetween, and is provided with a spiral foil 14 arranged between the floating ring 15 and the housing 11. In the seal device, the floating ring exhibits a sealing action by following the movement of the rotating shaft and can damp vibration of the rotating shaft.Type: ApplicationFiled: February 21, 2018Publication date: January 9, 2020Inventors: Yuichiro TOKUNAGA, Hideyuki INOUE, Wataru KIMURA, Tetsuya IGUCHI, Hidetoshi KASAHARA, Jun HIROMATSU, Yasuhiro KUROKI, Ryu KIKUCHI
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Publication number: 20200011342Abstract: In an exemplary embodiment, a seal device 10 that seals between a housing 11 and a rotation shaft 20 passing through the housing 11 includes a floating ring 15 arranged with a gap h with respect to the rotation shaft 20, wherein the floating ring 15 includes at least one supporting means 18 that supports in the circumferential direction. In the seal device, the floating ring follows movement of the rotation shaft even upon running for a long time, a clearance between the rotation shaft and the seal ring can be properly held, and the sealing operation by the floating ring and the vibration damping function can be exerted, and the seal device is easily assembled.Type: ApplicationFiled: February 21, 2018Publication date: January 9, 2020Inventors: Yuichiro TOKUNAGA, Hideyuki INOUE, Wataru KIMURA, Tetsuya IGUCHI, Hidetoshi KASAHARA, Jun HIROMATSU, Yasuhiro KUROKI, Ryu KIKUCHI
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Patent number: 10473220Abstract: In an embodiment, in a slide component, dynamic pressure generation grooves 10 are provided on a sealing face of at least one of a pair of slide parts 4, 7 so as to be isolated with no communication from the sealed fluid side and the leakage side by land portions R of both the sealing faces, and a plurality of independently-formed minute recessed sections 11 is provided at positions on the sealing face IS between the dynamic pressure generation grooves 10 and the leakage side, the positions being separated in the radial direction from the dynamic pressure generation grooves. The slide component can make the sealing faces fluid-lubricant and low frictional and prevent leakage of a sealed fluid and incoming of dust to the sealing faces at the time of normal operation.Type: GrantFiled: May 13, 2016Date of Patent: November 12, 2019Assignee: EAGLE INDUSTRY CO., LTD.Inventors: Yuichiro Tokunaga, Hideyuki Inoue, Wataru Kimura, Tetsuya Iguchi, Takeshi Hosoe, Hidetoshi Kasahara, Takafumi Ota, Keiichi Chiba, Masatoshi Itadani, Hikaru Katori
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Publication number: 20180172162Abstract: In an embodiment, in a slide component, dynamic pressure generation grooves 10 are provided on a sealing face of at least one of a pair of slide parts 4, 7 so as to be isolated with no communication from the sealed fluid side and the leakage side by land portions R of both the sealing faces, and a plurality of independently-formed minute recessed sections 11 is provided at positions on the sealing face IS between the dynamic pressure generation grooves 10 and the leakage side, the positions being separated in the radial direction from the dynamic pressure generation grooves. The slide component can make the sealing faces fluid-lubricant and low frictional and prevent leakage of a sealed fluid and incoming of dust to the sealing faces at the time of normal operation.Type: ApplicationFiled: May 13, 2016Publication date: June 21, 2018Inventors: Yuichiro TOKUNAGA, Hideyuki INOUE, Wataru KIMURA, Tetsuya IGUCHI, Takeshi HOSOE, Hidetoshi KASAHARA, Takafumi OTA, Keiichi CHIBA, Masatoshi ITADANI, Hikaru KATORI
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Publication number: 20180128377Abstract: In an embodiments, in a sealing face of at least one slide part of a pair of slide parts, a dynamic pressure generation groove 10 is provided so as to be separated not to communicate with a sealed fluid side and a leakage side by land portions on both sealing faces, between an end 10a on the leakage side of the dynamic pressure generation groove 10 and the leakage side, a fluid introduction groove 11 which communicates the dynamic pressure generation groove 10 and the leakage side is provided, and the cross-sectional area of the fluid introduction groove 11 is set smaller than the cross-sectional area of the dynamic pressure generation groove 10. The sealing faces are subjected to fluid lubrication and low friction in a steady operation, and leakage of the sealed fluid and entrance of dust into the sealing faces are suppressed.Type: ApplicationFiled: May 13, 2016Publication date: May 10, 2018Inventors: Yuichiro TOKUNAGA, Hideyuki INOUE, Wataru KIMURA, Tetsuya IGUCHI, Takeshi HOSOE, Hidetoshi KASAHARA, Takafumi OTA, Keiichi CHIBA, Masatoshi ITADANI, Hikaru KATORI
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Publication number: 20110031706Abstract: A seal part having a base material, a porous coating layer formed by flame spraying a hard material on a seal surface of the base material, and a lubricating film containing one or more types of materials selected from silver, gold, and tin and a gold-cobalt alloy on the porous coating layer. The seal part of the present invention has superior durability and sealability and further a long life and high reliability even when used in a high temperature (for example 400° C. or more, in particular 400 to 600° C.) and high pressure (for example 2 MPa or more) environment.Type: ApplicationFiled: October 22, 2010Publication date: February 10, 2011Applicants: Eagle engineering Aerospace co., Ltd., The society of Japanese Aerospace CompaniesInventors: Kei KOMUKAI, Tetsuya IGUCHI, Hidetoshi KASAHARA
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Patent number: 7823889Abstract: A seal part having a base material, a porous coating layer formed by flame spraying a hard material on a seal surface of the base material, and a lubricating film containing one or more types of materials selected from silver, gold, and tin and a gold-cobalt alloy on the porous coating layer. The seal part of the present invention has superior durability and sealability and further a long life and high reliability even when used in a high temperature (for example 400° C. or more, in particular 400 to 600° C.) and high pressure (for example 2 MPa or more) environment.Type: GrantFiled: March 30, 2005Date of Patent: November 2, 2010Assignee: Eagle Industry Aerospace Co., Ltd.Inventors: Kei Komukai, Tetsuya Iguchi, Hidetoshi Kasahara
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Publication number: 20090315272Abstract: A divided brush seal comprises a base portion to shut off a sealing fluid side area and environment area, a first end portion having a first connecting face at one side divided end of the base portion, a second end portion having a second connecting face at another divided end of the base portion which connects with the first end portion, a seal brush having bristle groups to seal the sealing fluid provided parallel to a supporting face with coupling one end thereof to a fixed portion which connects with the base plate, wherein the first end portion and the second end portion comprise a first bristle groups respectively, a wire diameter of a first bristle of the first bristle groups is thicker with respect to a wire diameter of a second bristle of a second bristle groups provided between the first bristle group of the first end portion and the first bristle group of the second end portion, the first bristle group of the respective divided brush seal and the first bristle group of the other side divided brushType: ApplicationFiled: July 4, 2007Publication date: December 24, 2009Applicant: EAGLE INDUSTRY CO., LTD.Inventors: Hidetoshi Kasahara, Toru Kono
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Publication number: 20070284828Abstract: A seal part having a base material, a porous coating layer formed by flame spraying a hard material on a seal surface of the base material, and a lubricating film containing one or more types of materials selected from silver, gold, and tin and a gold-cobalt alloy on the porous coating layer. The seal part of the present invention has superior durability and sealability and further a long life and high reliability even when used in a high temperature (for example 400° C. or more, in particular 400 to 600° C.) and high pressure (for example 2 MPa or more) environment.Type: ApplicationFiled: March 30, 2005Publication date: December 13, 2007Inventors: Kei Komukai, Tetsuya Iguchi, Hidetoshi Kasahara
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Patent number: 7128323Abstract: Primary objective of the present invention is to provide a seal device wherein the seal surfaces of the device are always brought into close contact against the side walls of the mounting slot regardless of fluid conditions. The seal device has two seal portions located to both sides of a bight shaped elastic portion which has a “U”-shaped cross section wherein the respective seal portions have a first side portion and a second side portion. The second side portions of the seal portions abut against each other in a symmetric manner in order to form a “W”-shaped seal body element. The end portions of the both second side portions of the seal body element are joined and seal surfaces are defined on the outer side surfaces of the both first side portions.Type: GrantFiled: August 11, 2004Date of Patent: October 31, 2006Assignee: Eagle Engineering Aerospace Co., Ltd.Inventors: Tetsuya Iguchi, Hidetoshi Kasahara, Jun Hiromatsu
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Publication number: 20050057003Abstract: Primary objective of the present invention is to provide a seal device wherein the seal surfaces of the device are always brought into close contact against the side walls of the mounting slot regardless of fluid conditions. The seal device has two seal portions located to both sides of a bight shaped elastic portion which has a “U”-shaped cross section wherein the respective seal portions have a first side portion and a second side portion. The second side portions of the seal portions abut against each other in a symmetric manner in order to form a “W”-shaped seal body element. The end portions of the both second side portions of the seal body element are joined and seal surfaces are defined on the outer side surfaces of the both first side portions.Type: ApplicationFiled: August 11, 2004Publication date: March 17, 2005Inventors: Tetsuya Iguchi, Hidetoshi Kasahara, Jun Hiromatsu