Patents by Inventor Hiroyuki Asakura
Hiroyuki Asakura 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: 20240145929Abstract: A frequency selective reflector including a reflecting member reflecting the electromagnetic waves; and a dielectric layer that: is disposed at an incident side of the electromagnetic waves with respect to the reflecting member; includes a concave and convex structure in which a plurality of a unit structure including a thickness distribution of increasing thickness in a predetermined direction is arranged; and transmits the electromagnetic waves, wherein the unit structure of the dielectric layer includes a plurality of cell regions of which thickness differs from one another; the dielectric layer includes, as the unit structure, at least a first unit structure including three or more of the cell regions of which thickness differs from one another; and a reflection direction of the electromagnetic waves is controlled by controlling a relative reflection phase distribution of the electromagnetic waves by the thickness distribution of the dielectric layer.Type: ApplicationFiled: March 4, 2022Publication date: May 2, 2024Applicant: DAI NIPPON PRINTING CO., LTDInventors: Yuichi MIYAZAKI, Hiroyuki ASAKURA, Atsuo NAKAMURA, Takeshi SEKIGUCHI, Shigeki KAWANO
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Patent number: 11655856Abstract: A motive power transmission device including first and second motive power transmission members that are spline-fitted together includes a spring retaining member that retains a spring and is mounted on the first motive power transmission member. The spring retaining member includes a temporarily fixing portion that is temporarily fixed to and mounted on the first motive power transmission member in a first compression state of the spring and a locking portion that is locked with the second motive power transmission member in a second compression state where when the first and second motive power transmission members are spline-fitted together, the spring is compressed and urges the second motive power transmission member toward one side in a circumferential direction with respect to the first motive power transmission member.Type: GrantFiled: March 19, 2021Date of Patent: May 23, 2023Assignee: Mazda Motor CorporationInventors: Kyosei Nakashima, Hiroyuki Asakura
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Publication number: 20210355998Abstract: A motive power transmission device including first and second motive power transmission members that are spline-fitted together includes a spring retaining member that retains a spring and is mounted on the first motive power transmission member. The spring retaining member includes a temporarily fixing portion that is temporarily fixed to and mounted on the first motive power transmission member in a first compression state of the spring and a locking portion that is locked with the second motive power transmission member in a second compression state where when the first and second motive power transmission members are spline-fitted together, the spring is compressed and urges the second motive power transmission member toward one side in a circumferential direction with respect to the first motive power transmission member.Type: ApplicationFiled: March 19, 2021Publication date: November 18, 2021Inventors: Kyosei Nakashima, Hiroyuki Asakura
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Publication number: 20180370619Abstract: An electric taxiing system of an aircraft includes: a wheel of an aircraft; a taxiing motor which is rotated together with the wheel in landing of the aircraft to apply breaking force to the wheel and to generate regenerative power according to the breaking force, and which rotates the wheel in taxiing of the aircraft; and a power supply control unit which supplies the regenerative power to an electric element of the aircraft, the electric element being driven in order for the aircraft to perform landing or re-takeoff after cancelling landing.Type: ApplicationFiled: December 1, 2016Publication date: December 27, 2018Applicant: IHI CORPORATIONInventors: Noriko MORIOKA, Daiki KAKIUCHI, Hitoshi OYORI, Hiroyuki ASAKURA
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Patent number: 10012264Abstract: There is provided a sliding member formed by combining a resin overlay and a soft metal overlay. The sliding member has a soft layer comprising a metallic material with a hardness of less than 40 HV provided under a resin overlay layer comprising a solid lubricant and resin. In the event of contamination by a foreign matter, the soft layer under the resin overlay layer is capable of plastic deformation and the resin overlay layer is capable of partial deformation accompanying the plastic deformation due to the hardness (T1) (?m) of the soft layer and the hardness (T2) (?m) of the resin overlay layer being such that 0.2?T1/T2?7.0 and 3.0?T1?20.0. Consequently, a foreign matter is desirably embedded and resistance to a foreign matter can be improved. Low friction is maintained by the resin overlay layer even after contamination by a foreign matter.Type: GrantFiled: February 7, 2013Date of Patent: July 3, 2018Assignee: Daido Metal Company Ltd.Inventors: Hiroyuki Asakura, Mikihito Yasui, Shigeya Haneda
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Patent number: 9217468Abstract: A slide member is provided with a base material and an overlay provided over the base material. The overlay includes a plurality of regions in a thickness direction including a region located in sliding-surface side that slides with the counter element and a region located in a base-material side. A material forming the overlay includes a plurality of crystal planes. Orientation index of at least one of the crystal planes differs in the region located in the sliding-surface side and the region located in the base-material side of the overlay.Type: GrantFiled: February 10, 2012Date of Patent: December 22, 2015Assignee: DAIDO METAL COMPANY LTD.Inventors: Hiroyuki Asakura, Mikihito Yasui, Shigeya Haneda, Satoshi Takayanagi, Tatsuo Yamada
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Patent number: 9206844Abstract: A slide member provided with an overlay composed of a Bi-based material. A slide member includes a substrate; and an overlay including Bi or a Bi alloy provided over the substrate. A surface portion (surface-most portion) of the overlay includes an oxide layer in which a bismuth oxide, is scattered. The content of the bismuth oxide in the oxide layer represented by oxygen content is equal to or greater than 0.5% mass % and equal to or less than 8.0 mass %. The orientation intensity ratio of the main orientation plane of Bi or Bi alloy crystals in the overlay is 50% or greater. The main orientation plane of the bismuth oxide crystals in the oxide layer is the (220) plane or the (201) plane.Type: GrantFiled: March 25, 2014Date of Patent: December 8, 2015Assignee: DAIDO METAL COMPANY LTD.Inventors: Hiroyuki Asakura, Mikihito Yasui, Shigeya Haneda
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Publication number: 20150291904Abstract: Provided is a sliding member which has high seizure resistance though an overlay layer comprising Ag as the main component is used therein. The sliding member of an embodiment comprises a base and an overlay layer which is disposed on the sliding-side surface of the base and which comprises Ag as the main component and contains Al. The overlay layer comprising Ag as the main component is relatively soft. Due to this, the overlay layer comprising Ag as the main component can ensure high seizure resistance even when the use of Pb is avoided. Furthermore, the overlay layer comprising Ag as the main component has excellent thermal conductivity. Due to this, frictional heat generating at the sliding part rapidly dissipates to the base side.Type: ApplicationFiled: January 15, 2013Publication date: October 15, 2015Applicant: DAIDO METAL COMPANY LTD.Inventors: Mikihito YASUI, Hiroyuki ASAKURA, Shigeya HANEDA
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Publication number: 20150016766Abstract: There is provided a sliding member formed by combining a resin overlay and a soft metal overlay. The sliding member has a soft layer comprising a metallic material with a hardness of less than 40 HV provided under a resin overlay layer comprising a solid lubricant and resin. In the event of contamination by a foreign matter, the soft layer under the resin overlay layer is capable of plastic deformation and the resin overlay layer is capable of partial deformation accompanying the plastic deformation due to the hardness (T1) (?m) of the soft layer and the hardness (T2) (?m) of the resin overlay layer being such that 0.2?T1/T2?7.0 and 3.0?T1?20.0. Consequently, a foreign matter is desirably embedded and resistance to a foreign matter can be improved. Low friction is maintained by the resin overlay layer even after contamination by a foreign matter.Type: ApplicationFiled: February 7, 2013Publication date: January 15, 2015Applicant: DAIDO METAL COMPANY LTD.Inventors: Hiroyuki Asakura, Mikihito Yasui, Shigeya Haneda
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Publication number: 20140287253Abstract: A slide member provided with an overlay composed of a Bi-based material. A slide member includes a substrate; and an overlay including Bi or a Bi alloy provided over the substrate. A surface portion (surface-most portion) of the overlay includes an oxide layer in which a bismuth oxide, is scattered. The content of the bismuth oxide in the oxide layer represented by oxygen content is equal to or greater than 0.5% mass % and equal to or less than 8.0 mass %. The orientation intensity ratio of the main orientation plane of Bi or Bi alloy crystals in the overlay is 50% or greater. The main orientation plane of the bismuth oxide crystals in the oxide layer is the (220) plane or the (201) plane.Type: ApplicationFiled: March 25, 2014Publication date: September 25, 2014Applicant: DAIDO METAL COMPANY LTD.Inventors: Hiroyuki ASAKURA, Mikihito YASUI, Shigeya HANEDA
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Publication number: 20130316189Abstract: A slide member is provided with a base material and an overlay provided over the base material. The overlay includes a plurality of regions in a thickness direction including a region located in sliding-surface side that slides with the counter element and a region located in a base-material side. A material forming the overlay includes a plurality of crystal planes. Orientation index of at least one of the crystal planes differs in the region located in the sliding-surface side and the region located in the base-material side of the overlay.Type: ApplicationFiled: February 10, 2012Publication date: November 28, 2013Applicant: DAIDO METAL COMPANY LTD.Inventors: Hiroyuki Asakura, Mikihito Yasui, Shigeya Haneda, Satoshi Takayanagi, Tatsuo Yamada
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Patent number: 8464438Abstract: A seasoning apparatus includes: a table on which a stack of paper sheets is loaded; a ceiling plate which is arranged above the table to cover an upper side of the paper stack on the table; a front side plate and a rear side plate which are arranged to oppose to each other at front and rear sides of the paper stack on the table, at least one of the front and rear side plates being advanceable and retractable relatively to each other; a right-hand side plate and a left-hand side plate which are arranged to oppose to each other at a right-hand side and a left-hand side of the paper stack on the table, at least one of the right-hand and left-hand side plates being advanceable and retractable relatively to each other; and an air blowing device which blows air horizontally toward the paper stack on the table.Type: GrantFiled: March 9, 2011Date of Patent: June 18, 2013Assignee: FUJIFILM CorporationInventors: Tatsuo Fujikura, Yuhei Chiwata, Masahiko Kondou, Hiroyuki Asakura
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Publication number: 20120282481Abstract: Disclosed is a sliding member (11) that has a base section (12) and an overlay layer (13) provided on the base section (12). The overlay layer (13) has Bi or a Bi alloy as the base, and contains Sn or an Sn alloy. The average particle size of Sn-based particles (15) distributed within the overlay layer (13) is no more than 5% of the average particle size of Bi-based particles (14) distributed within the overlay layer (13).Type: ApplicationFiled: February 4, 2011Publication date: November 8, 2012Inventors: Mikihito Yasui, Satoshi Takayanagi, Hiroyuki Asakura
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Publication number: 20120277131Abstract: Disclosed is a sliding member having an overlay layer (13) containing Bi-based particles (14) comprising Bi or a Bi alloy. The long axis of the Bi-based particles (14) is considered to be X, the short axis Y, and the aspect ratio Z=X÷Y. The aforementioned Bi-based particles are classified as one of either first Bi-based particles that satisfy Z<2, second Bi-based particles that satisfy 2?Z<3, or third Bi-based particles that satisfy 3?Z. With respect to the total number of Bi-based particles, considering the proportion that are first Bi-based particles to be a%, the proportion that are second Bi-based particles to be b%, the proportion that are third Bi-based particles to be c%, a÷b=d, and a÷c=e, the sliding member satisfies: a?30, 0.5?d?6.0, and 0.5?e?6.0.Type: ApplicationFiled: February 4, 2011Publication date: November 1, 2012Applicant: DAIDO METAL COMPANY LTDInventors: Hiroyuki Asakura, Satoshi Takayanagi, Mikihito Yasui
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Patent number: 8216692Abstract: A slide member including a base material; an intermediate layer consisting of Ag or Ag-based alloy and an additive element of a first quantity formed over the base material; and an overlay comprising Bi or Bi-based alloy and the additive element of a second quantity formed over the intermediate layer, wherein the additive element consists of a low melting point metal, the first quantity being five times or greater than the second quantity.Type: GrantFiled: April 15, 2010Date of Patent: July 10, 2012Assignee: Daido Metal Company Ltd.Inventors: Mikihito Yasui, Hideo Tsuji, Hiroyuki Asakura
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Publication number: 20120064358Abstract: A slide member is disclosed. The slide member includes a Cu-based bearing alloy layer; an intermediate layer provided over the Cu-based bearing alloy layer; and a Sn-based overlay provided over the intermediate layer. The intermediate layer consists of one or more materials selected from a group of Ni, Ni alloy, Co, and Co alloy and is thinner than 4 ?m. The Sn-based overlay contains Sn and 6 mass % or more of Cu.Type: ApplicationFiled: September 15, 2011Publication date: March 15, 2012Applicant: DAIDO METAL COMPANY LTD.Inventors: Satoshi TAKAYANAGI, Yi ZHANG, Hiroyuki ASAKURA, Yukihiko KAGOHARA
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Publication number: 20120064365Abstract: A slide member is disclosed. The slide member includes a bearing alloy layer, a Ni-based intermediate layer provided over the bearing alloy layer, and a Sn-based overlay provided over the Ni-based intermediate layer. The Sn-based overlay comprises at least one layer, the Sn-based overlay including a first layer or region having a sliding surface and a second layer or region placed in contact with the Ni-based intermediate layer. The first layer or region contains Sn and 3 mass % or more of Cu and the second layer or region contains Sn and 8 mass % or less of Cu.Type: ApplicationFiled: September 15, 2011Publication date: March 15, 2012Applicant: DAIDO METAL COMPANY LTD.Inventors: Satoshi TAKAYANAGI, Yi Zhang, Hiroyuki Asakura, Yukihiko Kagohara
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Publication number: 20110219641Abstract: A seasoning apparatus includes: a table on which a stack of paper sheets is loaded; a ceiling plate which is arranged above the table to cover an upper side of the paper stack on the table; a front side plate and a rear side plate which are arranged to oppose to each other at front and rear sides of the paper stack on the table, at least one of the front and rear side plates being advanceable and retractable relatively to each other; a right-hand side plate and a left-hand side plate which are arranged to oppose to each other at a right-hand side and a left-hand side of the paper stack on the table, at least one of the right-hand and left-hand side plates being advanceable and retractable relatively to each other; and an air blowing device which blows air horizontally toward the paper stack on the table.Type: ApplicationFiled: March 9, 2011Publication date: September 15, 2011Inventors: Tatsuo FUJIKURA, Yuhei Chiwata, Masahiko Kondou, Hiroyuki Asakura
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Publication number: 20100266869Abstract: A slide member including a base material; an intermediate layer consisting of Ag or Ag-based alloy and an additive element of a first quantity formed over the base material; and an overlay comprising Bi or Bi-based alloy and the additive element of a second quantity formed over the intermediate layer, wherein the additive element consists of a low melting point metal, the first quantity being five times or greater than the second quantity.Type: ApplicationFiled: April 15, 2010Publication date: October 21, 2010Applicant: DAIDO METAL COMPANY LTD.Inventors: Mikihito YASUI, Hideo Tsuji, Hiroyuki Asakura
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Patent number: 7651033Abstract: A noncontact IC tag 1 comprises a base film 11, a noncontact IC circuit 2, 3 formed on the base film 11, and a plastic film or paper serving as a surfacing sheet 4, having a non-conductive, lustrous metal film 6m formed by deposition, laminated to the base film 11 on the side of the noncontact IC tag circuit 2, 3. The surface roughness of the non-conductive, lustrous metal film 6m, determined by atomic force microscopy, is more than 10 nm and 100 nm or less as indicated by the center line average height Ra. In the case where the non-conductive, lustrous metal film 6m is formed on the outer surface of the surfacing sheet 4, a concealing layer 4a may further be formed on the inner surface of the surfacing sheet 4 in order to enhance concealing properties.Type: GrantFiled: November 27, 2006Date of Patent: January 26, 2010Assignee: Dai Nippon Printing Co., Ltd.Inventors: Hiroyuki Asakura, Kiyoshi Imaizumi, Takeshi Iihara, Kazuyuki Takasawa, Minoru Komada