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公开(公告)号：US09523304B2
公开(公告)日：2016-12-20
申请号：US14775389
申请日：2014-02-05
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Tomohiro Furuya , Toshio Yokota , Katsuhiko Kainuma
CPC classification number: F01N13/007 , F01N1/14 , F01N3/285 , F01N13/14 , F01N13/1805 , F01N13/1844 , F01N2260/14 , F01N2260/16 , F01N2260/26 , F01N2310/14 , F01N2470/00 , F16L21/02
Abstract: An exhaust pipe that forms an exhaust flow channel includes a first flow channel member that forms part of the exhaust flow channel, and a second flow channel member connected in series with the first flow channel member, and forms part of the exhaust flow channel. A downstream-side end of the first flow channel member is inserted into an upstream-side end of the second flow channel member. A communication channel that communicates between an inside and an outside of the exhaust pipe is formed between an outer surface of an insertion part of the first flow channel member and an inner surface of an insertion-receiving part of the second flow channel member. The insertion-receiving part is arranged to face higher than a horizontal direction.
Abstract translation: 形成排气流路的排气管包括形成排气流路的一部分的第一流路部件和与第一流路部件串联连接的第二流路部件，形成排气流路的一部分。 第一流路部件的下游侧端部插入第二流路部件的上游侧端部。 在第一流路部件的插入部的外表面和第二流路部件的插入接收部的内表面之间形成有在排气管的内部和外部之间连通的连通通道。 插入容纳部配置成比水平方向高。
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公开(公告)号：US11377988B2
公开(公告)日：2022-07-05
申请号：US16777205
申请日：2020-01-30
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Yuki Noumi , Katsuhiko Kainuma
Abstract: Provided is a tail pipe in which a silencing effect at a discharge port is obtained. One aspect of the present disclosure is a tail pipe including: an inner tube including a discharge port configured such that an exhaust gas is discharged therefrom; an outer tube arranged so as to form a space between the outer tube and the inner tube by surrounding an outer peripheral surface of the inner tube, an upstream end of the outer tube in a flow direction of the exhaust gas being closed; and at least one communication hole allowing communication between an interior of the inner tube and the space.
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公开(公告)号：US09388719B2
公开(公告)日：2016-07-12
申请号：US14406169
申请日：2013-06-07
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Katsuhiko Kainuma , Masahiro Kajikawa
Abstract: Provided is a muffler comprising: an outer shell; an outlet pipe, which is formed into a tubular shape containing a pair of open end-parts and is comprising an inlet port, wherein one of the open end-parts and the inlet port are arranged inside the outer shell; a valve body formed into a plate-like shape to cover the inlet port from the inside of the outlet pipe; an axis member that pivotally supports the valve body to the outlet pipe so that the valve body pivots inside the outlet pipe; and a biasing member that applies a biasing force in the radial direction of the outlet pipe to the valve body so as to occlude the inlet port.
Abstract translation: 提供一种消音器，包括：外壳; 出口管，其形成为包含一对开口端部的管状，并且包括入口，其中所述开口端部和所述入口中的一个布置在所述外壳的内部; 形成为板状的阀体，以从出口管的内部覆盖入口; 轴构件，其将阀体枢转地支撑到出口管，使得阀体在出口管内部枢转; 以及偏压构件，其将出口管的径向上的偏置力施加到阀体以封闭入口。
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公开(公告)号：US20150337699A1
公开(公告)日：2015-11-26
申请号：US14758730
申请日：2013-12-18
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Katsuhiko Kainuma , Tomohiro Furuya
IPC: F01N1/02
CPC classification number: F01N1/023 , F01N1/026 , F01N2470/24
Abstract: Provided is a muffler having a double pipe portion formed therein in which an end portion of a first tubular member is inserted into a second tubular member from an end portion thereof. A leading end portion of the second tubular member is joined to an outer periphery of the first tubular member. A portion that forms the double pipe portion of the second tubular member comprises a first portion located closer to an end of the first tubular member, and a second portion that is located closer to an end of the second tubular member and that has an enlarged diameter compared with the first portion. A resonance chamber is formed between the first tubular member and the second portion. A communication path that allows communication between an exhaust flow path and the resonance chamber is formed between the first tubular member and the first portion.
Abstract translation: 本发明提供一种消音器，其具有形成在其中的双管部分，其中第一管状部件的端部从其端部插入到第二管状部件中。 第二管状构件的前端部连接到第一管状构件的外周。 形成第二管状构件的双管部分的部分包括位于更接近第一管状构件的端部的第一部分和位于更靠近第二管状构件的端部并且具有更大直径的第二部分 与第一部分相比。 在第一管状构件和第二部分之间形成共振室。 在第一管状构件和第一部分之间形成有允许排气流路和谐振室之间的连通的连通路径。
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公开(公告)号：US11480080B2
公开(公告)日：2022-10-25
申请号：US16750800
申请日：2020-01-23
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Seiji Kondo , Shinnosuke Toichi , Katsuhiko Kainuma
IPC: F01N1/02
Abstract: Provided is a muffler that can reduce sound pressure of a standing wave in an outlet pipe and, at the same time, can inhibit generation of flow noise. In one aspect of the present disclosure, the muffler includes a housing, an outlet pipe, a cover that covers the outlet pipe. The outlet pipe includes an outlet end and at least one communication hole. The outlet end opens into the housing. The at least one communication hole is formed in an outer circumferential surface of the outlet pipe. The cover includes a wall portion and an opening. The wall portion is disposed to overlap with the at least one communication hole in a radial direction of the outlet pipe. The opening communicates the at least one communication hole and an internal space of the housing with each other.
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Patent Agency Ranking
公开(公告)号：US11261768B2
公开(公告)日：2022-03-01
申请号：US16255091
申请日：2019-01-23
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Hayato Tawada , Shinnosuke Toichi , Katsuhiko Kainuma
IPC: F01N1/02 , F01N13/18 , G10K11/172
Abstract: A muffler including a double-pipe structure to muffle sounds in two or more frequencies is provided. The muffler includes an inner and outer pipes with a clearance therebetween. The inner pipe includes a first and second outer surfaces, and, at one end, an opening communicating with the outer pipe. The clearance communicates with an exhaust passage via the opening. The second outer surface forms the opening and is situated closer to the center of the inner pipe than the first outer surface is. A space between the inner and outer pipes is closed due to a contact between the first outer surface and an inner-circumferential surface of the outer pipe. A part of the clearance is formed between the first outer surface and the inner-circumferential surface. The outer-circumferential surfaces of the inner pipe include at least one communication hole that communicates the inner pipe with the clearance.
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公开(公告)号：US20200240300A1
公开(公告)日：2020-07-30
申请号：US16750800
申请日：2020-01-23
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Seiji Kondo , Shinnosuke Toichi , Katsuhiko Kainuma
IPC: F01N1/02
Abstract: Provided is a muffler that can reduce sound pressure of a standing wave in an outlet pipe and, at the same time, can inhibit generation of flow noise. In one aspect of the present disclosure, the muffler includes a housing, an outlet pipe, a cover that covers the outlet pipe. The outlet pipe includes an outlet end and at least one communication hole. The outlet end opens into the housing. The at least one communication hole is formed in an outer circumferential surface of the outlet pipe. The cover includes a wall portion and an opening. The wall portion is disposed to overlap with the at least one communication hole in a radial direction of the outlet pipe. The opening communicates the at least one communication hole and an internal space of the housing with each other.
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公开(公告)号：US20150152760A1
公开(公告)日：2015-06-04
申请号：US14406169
申请日：2013-06-07
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Katsuhiko Kainuma , Masahiro Kajikawa
Abstract: Provided is a muffler comprising: an outer shell; an outlet pipe, which is formed into a tubular shape containing a pair of open end-parts and is comprising an inlet port, wherein one of the open end-parts and the inlet port are arranged inside the outer shell; a valve body formed into a plate-like shape to cover the inlet port from the inside of the outlet pipe; an axis member that pivotally supports the valve body to the outlet pipe so that the valve body pivots inside the outlet pipe; and a biasing member that applies a biasing force in the radial direction of the outlet pipe to the valve body so as to occlude the inlet port.
Abstract translation: 提供一种消音器，包括：外壳; 出口管，其形成为包含一对开口端部的管状，并且包括入口，其中所述开口端部和所述入口中的一个布置在所述外壳的内部; 形成为板状的阀体，以从出口管的内部覆盖入口; 轴构件，其将阀体枢转地支撑到出口管，使得阀体在出口管内部枢转; 以及偏压构件，其将出口管的径向上的偏置力施加到阀体以封闭入口。
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公开(公告)号：US20200217231A1
公开(公告)日：2020-07-09
申请号：US16728896
申请日：2019-12-27
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Shinnosuke Toichi , Takeshi Osanai , Yoshiaki Kataoka , Hayato Tawada , Katsuhiko Kainuma
IPC: F01N1/02 , F01N13/14 , F01N13/08 , G10K11/172
Abstract: An exhaust pipe with a double pipe structure that can reduce generation of a turbulent flow of exhaust gases is provided. In one aspect of the present disclosure, the exhaust pipe includes a double pipe and a retention member. The double pipe includes an inner pipe and an outer pipe. The retention member is disposed in a gap provided between an outer circumferential surface of the inner pipe and an inner circumferential surface of the outer pipe. The retention member is disposed at at least one end of the double pipe. At the end of the double pipe where the retention member is disposed, a radial clearance between the outer circumferential surface of the inner pipe and the inner circumferential surface of the outer pipe at an opening of the inner pipe is smaller than the radial clearance in an arrangement area where the retention member is disposed.
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公开(公告)号：US20180266575A1
公开(公告)日：2018-09-20
申请号：US15542295
申请日：2016-01-08
Applicant: FUTABA INDUSTRIAL CO., LTD.
Inventor： Kiyomichi Kobori , Yoshiteru Shirai , Katsuhiko Kainuma , Munehiro Tsubosaka
Abstract: A link couples a support body and a valve body in a first arrangement where a first link-forming member is rotationally movably supported by the support body and in which a second link-forming member is rotationally movably supported by the valve body. The link includes: a link length that is a length of the first link-forming member, as measured between a rotation axis with respect to the support body and a rotation axis with respect to the second link-forming member; and a link length that is a length of the second link-forming member, as measured between a rotation axis with respect to the valve body and a rotation axis with respect to the first link-forming member. The link lengths differ from each other. The link is also configured to enable coupling between the support body and the valve body in a second arrangement inverted with respect to the first arrangement.
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